Mykonos in Summer
In summer (June, July and August), Mykonos sees average daytime highs around 24°C and overnight lows near 23°C, with 2 mm of rain over about 1 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 21°C in early June to 25°C by late August. The sky is clear or mostly clear about 97% of the time across summer, and the air most often feels muggy.
Summer is Mykonos's best season of the year to visit on our travel score. For the whole year in context, see Mykonos's year-round climate.
- Avg daytime high
- 24°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 2 mm
- 1 wet days
- Avg wind
- 28 km/h
- Travel score
- 9.6
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Mykonos in Summer
Over the season highs climb from about 21°C in early June to 25°C by late August.
A typical summer day in Mykonos reaches about 24°C and drops to 23°C overnight. The warmest of the three months is August, the coolest June.
Mykonos weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 14° / 12° | 80 | 11.4 | 9.7 | 3.8 |
| Feb | 14° / 12° | 64 | 8.8 | 10.6 | 4.0 |
| Mar | 14° / 13° | 46 | 6.6 | 11.7 | 4.8 |
| Apr | 16° / 15° | 19 | 3.6 | 12.9 | 6.2 |
| May | 19° / 18° | 8 | 1.6 | 14 | 7.9 |
| Jun | 23° / 21° | 2 | 0.4 | 14.5 | 9.4 |
| Jul | 25° / 24° | 0 | 0.1 | 14.3 | 9.7 |
| Aug | 25° / 24° | 0 | 0 | 13.4 | 9.6 |
| Sep | 24° / 22° | 6 | 1 | 12.3 | 9.3 |
| Oct | 21° / 19° | 31 | 3.7 | 11 | 7.9 |
| Nov | 17° / 16° | 43 | 6.3 | 10 | 6.4 |
| Dec | 15° / 13° | 68 | 10.1 | 9.5 | 4.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 97% of the time across summer.
Chance of precipitation in Summer
Mykonos gets around 2 mm of rain over 1 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 28 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 24 min in early June to 12 h 54 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 7.6 kWh/m².
Is summer a good time to visit Mykonos?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is one of the better times to visit Mykonos for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Mykonos in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mykonos sees daytime highs around 24°C and nights near 23°C. Pack sun protection and a windbreaker. Worth having: light clothes.
Sea temperature near Mykonos in Summer
The nearest coast averages about 23°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in August at about 24°C and coldest in February near 16°C.
It's comfortable for a long swim from Jun 2 to Oct 31 — about 5 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 16 | 16 | 16 | 16 | 18 | 21 | 23 | 24 | 23 | 21 | 19 | 17 |
| Comfort | Cool | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 16 | Cool |
| Feb | 16 | Cool |
| Mar | 16 | Cool |
| Apr | 16 | Cool |
| May | 18 | Cool |
| Jun | 21 | Refreshing |
| Jul | 23 | Refreshing |
| Aug | 24 | Refreshing |
| Sep | 23 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Mykonos in Summer
Clear-sky midday UV across summer averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mykonos peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 4 | 8 | 7 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| Level | Low | Moderate | Moderate | Very high | Very high | Very high | Very high | Very high | Very high | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 8 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 7 | Very high |
| Oct | 5 | Moderate |
| Nov | 3 | Moderate |
| Dec | 2 | Low |
Where is Mykonos?
Mykonos sits at 37.4°N, 25.3°E, 0 m above sea level, in Greece. The nearest listed city is Naxos, 38 km away.
Topography around Mykonos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mykonos.
Within 3 km, the terrain around Mykonos has significant variations in elevation — a maximum elevation change of 265 m around an average of 55 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 377 m; within 80 km, large variations in elevation — a maximum elevation change of 996 m.
The land around Mykonos is covered by grassland (41%) and water (34%) within 3 km, water (86%) within 16 km, and water (90%) within 80 km.
Greece travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 230 V · 50 Hz
- Prices
- ≈ 60% of US
- price level, 2025
- GDP per capita
- $26,948
- 2025
- Happiness
- 5.7 / 10
- World Happiness, 2025
- Safe drinking water
- 97%
- of population, 2024
- Homicide rate
- 0.8
- per 100k, 2023
- Road deaths
- 8.3
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- High
- EF EPI 592
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Mykonos (37.4453°, 25.3287°, elevation 0 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.