- Rain mm/yr
- 402
Updated July 2026 · Sources cited: climatestotravel.com, weather-and-climate.com
Good to know
Good to Know
- May–October offers the best weather for visits: warm, dry, and abundant sunshine.
- Pack a light sweater or jacket for summer evenings and the winter season.
- Strong Meltemi winds are a defining feature, especially July–August; bring wind-resistant clothing if sensitive.
- Summer is peak tourist season and significantly more expensive; June or September offer similar weather with fewer crowds.
- The island's water scarcity is partly due to low rainfall, so drought-resistant landscaping is common.
- Winter months (December–February) see many tourist facilities closed despite relatively mild temperatures.
Peak Month
- Month
- August
Daytime High
- Celsius
- 29
- Fahrenheit
- 84
Nighttime Low
- Celsius
- 21
- Fahrenheit
- 70
Off Peak Month
- Month
- January
Daytime High
- Celsius
- 12
- Fahrenheit
- 54
Nighttime Low
- Celsius
- 7
- Fahrenheit
- 45
Wind
Known as 'The Island of the Winds.' Meltemi winds dominate summer (especially July–August), sometimes exceeding 70 kph (45 mph), particularly in afternoons and evenings. Average wind speeds 20–24 kph (12–15 mph).
Seasons
- Autumn
- Mid-September–November: Initially warm and sunny, gradually becoming cooler and rainier. Meltemi winds persist early on, then autumnal depressions dominate later.
- Summer
- June–mid September: Warm and sunny with strong Meltemi winds. Daytime highs typically below 30°C (86°F), though occasional extremes of 38–40°C (100–104°F) are rare. Evenings can be cool despite warm days.
- Winter
- December–mid-March: Mild, rainy, and windy. Most rainfall occurs during this period. Frost danger present but snow is extremely rare.
Humidity
Generally high year-round: peaks at 74% in November, drops to 68% in June. January averages 71%.
Rainfall
- Dry Season
- April–September (minimal rainfall; July averages 0.3 mm / 0.01 in)
- Wet Season
- October–March (peak January with 83 mm / 3.3 in)
- Annual Total Mm
- 402
- Annual Total Inches
- 16
Snowfall
Snowfall is virtually absent; rainfall is measured as water equivalent even in rare winter precipitation events.
Climate Type
Mediterranean hot semi-arid with mild winters and warm, sunny summers
Sunshine Hours
Up to 300 clear days annually. July averages 14 hours; January averages 3.5–4 hours.
Sea Temperature
Winter (Feb–March): 15–16°C (59–61°F), too cold for comfortable swimming. Summer (July–August): 23–24°C (73–75°F), warm for swimming. Best for water activities July–early October.
Sources cited for this category
These are the sources cited in this climate & weather research for this city. Individual figures may not each trace to one of them.
More About Mykonos
Data last updated July 2026 · Verify anything important.