With its whitewashed buildings, blue accents, and dazzling Aegean Sea, Mykonos is one of the most popular Greek islands. Travel photos often make the island look warm and sunny throughout the year, but temperatures are only part of the weather story.
Wind conditions can significantly affect how the weather feels in Mykonos. During summer, the dry northerly Meltemi wind can lower the perceived temperature, create choppy sea conditions, and occasionally affect boat tours and ferry services.
A hot afternoon may turn surprisingly cool after sunset, particularly at waterfront restaurants, exposed beaches, and sunset viewpoints. In winter, temperatures remain relatively mild compared with many other European destinations, but rain, humidity, and strong coastal winds can make the island feel colder.
When choosing the best time to visit Mykonos, consider more than the average air temperature. Sea temperature, wind, rainfall, crowds, seasonal business hours, and your preferred activities should all influence your decision.
Mykonos Climate Overview
Mykonos has a Mediterranean climate characterized by hot, dry summers and mild, wetter winters. Most rainfall occurs between October and March, while June, July, and August are generally dry and sunny.
January is usually the coldest month, with average daytime highs of around 13°C and nighttime temperatures of approximately 8°C to 9°C. July and August are the hottest months, with daytime highs typically reaching 28°C to 29°C.
These summer temperatures may appear moderate compared with other Mediterranean destinations. However, the island has limited shade, and direct sunlight can feel intense during the middle of the day.
Wind is another important feature of Mykonos weather. The island is known for the Meltemi, a dry northerly wind that usually affects the Aegean Sea between June and September. It is often strongest in July and August.
The Meltemi helps reduce humidity and provides relief from the summer heat. However, strong wind can blow sand across exposed beaches, create rough water, and affect sailing routes. Sunset cruises, yacht tours, and ferries may be delayed, rerouted, or canceled when conditions become unsuitable.
Mykonos Weather by Month Comparison
The figures below are approximate long-term climate averages. Actual temperatures, rainfall, wind conditions, and sea temperatures can vary from year to year.
| Month | Average High | Average Low | Sea Temperature | Approximate Rainy Days | General Conditions | Weather Concerns |
|---|---|---|---|---|---|---|
| January | 13°C | 8–9°C | 16°C | 9–10 days | Cool, damp, and windy | Rain, strong wind, rough seas |
| February | 13°C | 8–10°C | 15–16°C | 7–8 days | Cool with cold coastal winds | Gusts, low perceived temperature |
| March | 15°C | 9–11°C | 15–16°C | 6–7 days | Mild in sunshine, cool in shade | Sudden showers and temperature changes |
| April | 18°C | 11–13°C | 16–17°C | 4–5 days | Mild and increasingly sunny | Cool sea and evening wind |
| May | 22–23°C | 15–17°C | 18–19°C | 2–3 days | Warm, sunny, and comfortable | Strong UV and cool water |
| June | 26–27°C | 19–21°C | 21–22°C | 1–2 days | Hot, dry, and breezy | Meltemi wind and intense UV |
| July | 28–29°C | 22–23°C | 23–24°C | 0–1 day | Hot, dry, and very sunny | Strong wind, UV exposure, crowds |
| August | 28–29°C | 22–23°C | 24–25°C | 0–1 day | Hot with the warmest sea | Meltemi wind and occasional heatwaves |
| September | 25–26°C | 19–21°C | 23–24°C | 2–3 days | Warm and generally pleasant | Late-month showers and evening wind |
| October | 21–22°C | 16–18°C | 21–22°C | 4–5 days | Mild but increasingly changeable | Rain, cloud, and larger temperature changes |
| November | 17–18°C | 12–14°C | 18–19°C | 6–7 days | Cool, damp, and quiet | Wind, rain, and seasonal closures |
| December | 14–15°C | 9–11°C | 17°C | 9–10 days | Cool, wet, and windy | Heavy rain, rough water, ferry disruption |
Mykonos Weather in Spring
Spring in Mykonos gradually changes from cool and unsettled conditions in March to warmer, drier weather in May. It is a good season for sightseeing, walking, photography, and exploring villages without peak-summer crowds.
The sea remains cool during most of spring, so this season is better suited to travelers who prioritize sightseeing over swimming.
Mykonos Weather in March
March has average daytime highs of approximately 15°C and nighttime temperatures of around 9°C to 11°C.
Sunshine becomes more frequent as winter ends, but the weather can still change quickly. A sunny afternoon may feel mild enough for outdoor sightseeing, while shaded streets, waterfront areas, and evenings can remain chilly.
The sea temperature is approximately 15°C to 16°C, which is too cold for comfortable swimming for most visitors. Beaches can still be enjoyable for walks and photography, but March is not a reliable month for a traditional beach holiday.
Pack long-sleeved tops, a sweater, long trousers, and a wind-resistant jacket. Waterproof shoes or trainers with reliable grip are useful because the stone lanes in Mykonos Town may become slippery after rain.
The main weather concerns in March are sudden showers, cool wind, and noticeable changes between daytime and evening temperatures. A lightweight waterproof jacket with a hood is often more practical than an umbrella in windy conditions.
Mykonos Weather in April
April has average daytime highs of approximately 18°C and nighttime temperatures of around 11°C to 13°C.
Rain becomes less frequent, and sunny days are increasingly common. The weather is generally comfortable for exploring Mykonos Town, visiting Ano Mera, taking photographs, and enjoying outdoor lunches.
Sea temperatures remain cool at approximately 16°C to 17°C. Swimming may be possible for visitors accustomed to cold water, but most travelers will find it uncomfortable.
Pack both short-sleeved and long-sleeved clothing. A light sweater, cardigan, or windbreaker is useful after sunset and in exposed coastal areas.
The main weather concerns in April are cool sea temperatures, evening wind, and the difference between sunny afternoons and chilly nights. Layering is the easiest way to remain comfortable throughout the day.
Mykonos Weather in May
May is one of the most comfortable months for sightseeing in Mykonos. Daytime highs generally reach 22°C to 23°C, while nighttime temperatures range from approximately 15°C to 17°C.
Rainfall is limited, and many days are warm and sunny. Sightseeing is usually comfortable during the day, and the island feels more active as seasonal hotels, restaurants, tours, and beach venues reopen.
The sea temperature is approximately 18°C to 19°C. Some visitors will be comfortable swimming, especially toward the end of the month, while others may find the water too cool for long periods.
Pack short-sleeved tops, lightweight shirts, comfortable trousers, and a cardigan or light jacket. If swimming is part of your plans, bring a swimsuit, beach cover-up, and quick-drying towel.
Strong ultraviolet exposure is a common concern in May. Because the air temperature feels comfortable, travelers may underestimate the strength of the sun. Use broad-spectrum sunscreen with an SPF of at least 30, wear sunglasses, and reapply sunscreen during long outdoor days.
Mykonos Weather in Summer
Summer is the driest, sunniest, and busiest period in Mykonos. It is the main season for beaches, swimming, nightlife, sailing, and outdoor dining.
June offers warm weather with slightly fewer crowds, while July and August provide the liveliest atmosphere and warmest sea temperatures. However, the Meltemi wind can be strongest during the peak summer months.
Mykonos Weather in June
June has average daytime highs of approximately 26°C to 27°C and nighttime temperatures of around 19°C to 21°C.
Rain is uncommon, and most days are sunny. The sea temperature reaches approximately 21°C to 22°C, making swimming comfortable for many travelers.
June is often considered one of the best times to visit Mykonos because it combines reliable summer weather with more manageable crowds than July and August. Beach clubs and seasonal businesses are generally open, while the island has not yet reached its busiest period.
Pack breathable T-shirts, shorts, lightweight dresses, sandals, and swimwear. A thin long-sleeved shirt or windbreaker is helpful for air-conditioned interiors, evening meals, and boat tours.
The main weather concerns in June are increasing UV exposure and the beginning of the Meltemi season. The wind may make the air feel cooler, but it does not reduce the risk of sunburn. Reapply sunscreen every two to three hours and drink water regularly.
Mykonos Weather in July
July is hot, dry, and extremely sunny. Average daytime highs reach approximately 28°C to 29°C, while nighttime temperatures remain around 22°C to 23°C.
Rain is rare, and the sea temperature is approximately 23°C to 24°C. These conditions are ideal for swimming, beach clubs, and water-based activities.
July is also one of the busiest months. Popular hotels, beach clubs, restaurants, car rentals, and tours can sell out in advance. Mykonos Town may become particularly crowded in the evening.
The Meltemi may blow strongly during July. On exposed beaches, it can create choppy water and blow sand across the shore. Wind conditions may also affect sailing tours and ferry schedules.
Pack breathable summer clothes, swimwear, sunglasses, comfortable sandals, and high-SPF sunscreen. If you bring a wide-brimmed hat, choose one with a secure strap so it is less likely to blow away.
The strongest sunshine is generally experienced around the middle of the day. Try to avoid long walks on exposed streets between approximately noon and 4 p.m. Use the hottest part of the day for lunch, a shaded beach area, or an indoor break.
If you are booking a sailing trip, consider a morning departure. Winds may increase later in the day, although conditions can vary and should always be checked locally.
Mykonos Weather in August
August is one of the hottest and busiest months in Mykonos. Average daytime highs are approximately 28°C to 29°C, while nighttime temperatures are around 22°C to 23°C.
The sea temperature reaches approximately 24°C to 25°C, making August one of the best months for swimming and extended time in the water.
The island is lively throughout the day and night. Accommodation prices are typically at their highest, and advance reservations are advisable for popular restaurants, beach clubs, rental vehicles, and sailing tours.
Strong Meltemi winds are possible throughout August. On windy days, beaches along more exposed coastlines may feel uncomfortable, while relatively sheltered southern beaches may offer more favorable conditions.
Pack lightweight, quick-drying summer clothes, swimwear, secure sandals, sun protection, and a thin wind-resistant jacket. A loose, light-colored, long-sleeved shirt can help protect your skin during extended outdoor activities.
The main concerns in August are strong wind, intense UV exposure, crowds, and occasional hot spells. When the wind weakens, temperatures may feel considerably hotter. Schedule long walks for the morning or late afternoon and carry water throughout the day.
Mykonos Weather in Autumn
Early autumn remains warm and suitable for swimming. September often feels like an extension of summer, while October becomes milder and more changeable. By November, rain and wind become more frequent.
Autumn can be an excellent choice for travelers who want warmer sea temperatures without the peak crowds of July and August.
Mykonos Weather in September
September has average daytime highs of approximately 25°C to 26°C and nighttime temperatures of around 19°C to 21°C.
Sea temperatures remain pleasantly warm at approximately 23°C to 24°C. Swimming conditions are often excellent, particularly during the first half of the month.
The weather in early September may closely resemble summer. Later in the month, temperatures gradually fall and the likelihood of short showers begins to increase.
September is widely considered one of the best times to visit Mykonos. The island remains active, but the atmosphere is often more relaxed than in July and August.
Pack summer clothing, swimwear, and sun protection. Add a cardigan, lightweight shirt, or thin jacket for evenings and windy waterfront areas. Travelers visiting at the end of September should also bring a compact waterproof layer.
The main weather concerns are occasional late-month rain and cooler evening wind. Even after a warm day, temperatures can feel noticeably lower after sunset.
Mykonos Weather in October
October has average daytime highs of approximately 21°C to 22°C and nighttime temperatures of around 16°C to 18°C.
The sea temperature remains around 21°C to 22°C. Swimming may still be possible during warm, calm weather, particularly in early October. However, sea and air conditions become less predictable as the month progresses.
Rainfall becomes more frequent than in September, and the weather may change during the day. A clear morning can be followed by cloud, wind, or a brief shower in the afternoon.
Pack short-sleeved shirts, long-sleeved layers, trousers, and a lightweight waterproof jacket. A hooded jacket is often more practical than an umbrella when the wind is strong.
The main weather concerns in October are rain, changing temperatures, and the gradual end of the tourism season. Some beach clubs, seasonal restaurants, and tourism services may reduce their hours or close later in the month.
Mykonos Weather in November
November has average daytime highs of approximately 17°C to 18°C and nighttime temperatures of around 12°C to 14°C.
Rain becomes more frequent, and evenings feel much cooler. The sea temperature is approximately 18°C to 19°C, but swimming is generally uncomfortable because of lower air temperatures and wind.
November offers a quiet atmosphere that is very different from the summer season. It may suit travelers interested in local life, photography, peaceful walks, or an extended stay rather than beaches and nightlife.
Pack long-sleeved tops, knitwear, trousers, a wind-resistant jacket, and waterproof shoes. Shoes with non-slip soles are particularly useful on wet stone paths.
The main concerns are strong wind, consecutive rainy periods, and possible transport disruption. Ferry schedules may be affected by rough conditions, so leave additional time when traveling between islands.
Mykonos Weather in Winter
Winter is the quietest period in Mykonos. Temperatures are relatively mild, but rain, humidity, and wind can make conditions feel cold.
Many hotels, beach clubs, restaurants, and tourism businesses operate seasonally. Travelers visiting from December through February should confirm accommodation services, transportation options, and nearby restaurants before booking.
Mykonos Weather in December
December has average daytime highs of approximately 14°C to 15°C and nighttime temperatures of around 9°C to 11°C.
Rain is relatively frequent, and coastal wind can lower the perceived temperature. The sea is approximately 17°C, but cold air, high waves, and variable conditions make swimming unsuitable for most travelers.
Pack sweaters, trousers, waterproof shoes, and a windproof, water-resistant jacket. Travelers sensitive to cold may also appreciate a lightweight insulated jacket.
The main weather concerns are strong rain, high waves, and ferry disruption. Avoid scheduling an important international flight immediately after a same-day ferry journey from Mykonos. Leaving at least one buffer day on the mainland can reduce the risk of a missed flight connection.
Mykonos Weather in January
January is typically the coldest month. Average daytime highs are around 13°C, while nighttime temperatures fall to approximately 8°C to 9°C.
Although these temperatures are mild compared with colder European destinations, coastal wind and humidity can make the island feel considerably colder. Warm outerwear may be necessary even during the day when conditions are cloudy or wet.
Pack knitwear, long trousers, waterproof shoes, and a wind-resistant jacket. A light scarf can also be useful for protecting your neck from cold wind.
The main concerns are strong wind, heavy showers, limited tourism services, and possible ferry changes. Confirm the operating hours of restaurants, grocery shops, transportation services, and nearby facilities before selecting accommodation.
Mykonos Weather in February
February has average daytime highs of approximately 13°C and nighttime temperatures of around 8°C to 10°C.
The sea temperature falls to approximately 15°C to 16°C, close to its lowest level of the year. Clear days may feel pleasant in direct sunlight, but strong wind can quickly lower the perceived temperature.
February is better suited to quiet village walks, photography, and a peaceful retreat than swimming or marine activities.
Pack sweaters, long trousers, waterproof footwear, and a windproof jacket. Dress in layers so that you can adjust between heated indoor spaces and exposed outdoor areas.
The main weather concerns are strong gusts, rough seas, and limited boat services. Plan a land-based itinerary and avoid relying heavily on excursions that require favorable sea conditions.
Best Time to Visit Mykonos for Swimming
The best time for swimming in Mykonos is generally from June through September.
July and August provide the warmest sea temperatures, while September combines warm water with slightly cooler air and potentially fewer visitors. June is a good alternative for travelers who want summer weather before the main peak season.
May and October may also offer opportunities to swim, but conditions are less reliable. The water may feel cold in May, while rain and wind become more likely in October.
Travelers sensitive to cold water may prefer accommodation with a heated pool when visiting outside the main summer season.
Best Time to Visit Mykonos for Sightseeing
May, June, September, and early October are excellent months for walking, sightseeing, and photography.
Temperatures are generally more comfortable than in peak summer, and spending several hours exploring Mykonos Town or Ano Mera is less physically demanding.
May and September are particularly attractive for travelers seeking sunny weather without the most intense summer heat. Early October can also be pleasant, although rain becomes more likely.
Best Time to Visit Mykonos for Beach Clubs and Nightlife
July and August offer the liveliest atmosphere, with beach clubs, nightlife venues, restaurants, and seasonal services operating at full capacity.
These months are ideal for travelers who want a busy social scene and warm water. However, they also bring the largest crowds, higher accommodation prices, and strong demand for reservations.
If the Meltemi is strong, consider beaches and venues in more sheltered southern areas rather than exposed northern coastlines.
Best Time to Visit Mykonos for a Quieter Trip
April, May, and October are suitable for travelers who prefer fewer crowds and a more relaxed pace.
April is best for sightseeing rather than swimming. May offers warmer conditions and more open businesses, while October combines mild weather with the possibility of rain and seasonal closures.
November through March is even quieter, but the tourism infrastructure is limited. Before booking, check whether your preferred hotel, restaurants, attractions, ferry services, and car rental providers will be operating.
Weather Conditions to Watch in Mykonos
Meltemi Wind
The Meltemi mainly affects Mykonos from June through September and may be strongest in July and August.
Strong wind can create rough sea conditions, make exposed beaches uncomfortable, and affect cruises or ferry services. A boat tour should ideally be placed in the middle of your itinerary rather than on your final day.
Review the tour operator’s weather-related cancellation and rescheduling policy before booking. If several departure times are available, a morning trip may be worth considering.
Strong Summer UV
Summer wind can make the temperature feel comfortable, causing travelers to underestimate UV exposure.
From June through September, use broad-spectrum sunscreen with an SPF of at least 30. Reapply it every two to three hours and after swimming. Sunglasses, secure hats, and lightweight long-sleeved shirts can provide additional protection.
Autumn and Winter Rain
Rain becomes more frequent from October and is common between November and February.
Heavy showers can make the polished stone streets and steps of Mykonos Town slippery. Pack shoes with reliable grip and a waterproof jacket with a hood.
Rough Seas and Transportation Changes
Strong wind can delay or cancel ferries and small boat services. Avoid planning an international flight immediately after a same-day ferry journey.
If your flight is particularly important, consider returning to Athens at least one day in advance. This provides additional protection against possible weather-related transport disruption.
Spring and Autumn Temperature Changes
April, May, September, and October can have warm afternoons followed by cool evenings.
Waterfront restaurants, sunset viewpoints, and boat decks may feel colder than inland streets. Always pack a cardigan, lightweight shirt, or thin windbreaker, even when the daytime forecast appears warm.
What to Wear in Mykonos
A practical packing list for Mykonos should include:
- Breathable short-sleeved tops
- A lightweight long-sleeved shirt
- Shorts and comfortable trousers
- Swimwear and a beach cover-up
- A lightweight windbreaker
- A hooded waterproof jacket for spring, autumn, or winter
- Broad-spectrum sunscreen with SPF 30 or higher
- UV-protective sunglasses
- A secure hat with a chin strap
- Comfortable, non-slip sandals
- Supportive walking shoes
- A small waterproof bag
- A portable charger
- A reusable water bottle
Mykonos Town has narrow lanes, steps, uneven paving, and polished stone surfaces. Stable sandals or supportive trainers are usually more practical than high heels.
On windy days, loose hats, large scarves, and highly flowing garments may become uncomfortable. Choose simple, secure clothing that allows you to walk comfortably around the island.
How to Plan a Mykonos Itinerary Around the Weather
Do not schedule an important boat excursion on the final day of your trip. Placing it in the middle of your itinerary gives you time to reschedule if strong wind or rough water causes a cancellation.
Avoid planning several consecutive beach-only days. Include flexible alternatives such as Mykonos Town, Ano Mera, museums, cafés, galleries, and restaurants.
Check the general forecast about seven days before departure. Two or three days before the trip, review hourly temperatures, predicted wind speed, rainfall, and perceived temperature.
On the day of a boat tour, check messages from the operator for departure updates. Weather forecasts are helpful, but the captain and local operator make the final decision based on actual marine conditions.
During summer, use the morning for beaches, boat tours, or walking. Plan lunch or an indoor break during the hottest part of the afternoon, then explore Mykonos Town and sunset viewpoints later in the day.
Mykonos Weather by Month: Final Summary
The best time to visit Mykonos depends on your preferred activities, budget, and tolerance for crowds.
June and September provide one of the best combinations of warm weather, swimming conditions, and manageable crowds. July and August are ideal for warm water, beach clubs, and nightlife, but they are also the busiest, most expensive, and potentially windiest months.
May and early October are suitable for sightseeing and a quieter atmosphere. Swimming conditions are less predictable, but daytime temperatures are generally comfortable for walking and exploring.
From November through March, Mykonos is quiet and relatively mild. However, rain and strong wind are more frequent, ferry schedules may be affected, and some tourism businesses close for the season.
Use this Mykonos weather by month guide as a general planning tool rather than a guaranteed forecast. Check the short-term weather and wind forecast before departure, choose flexible cancellation terms for boat tours, and keep at least one adaptable day in your itinerary.
With the right timing, suitable clothing, and a flexible schedule, you can enjoy Mykonos comfortably in almost any season.
