- Rain mm/yr
- 730
- Climate Type
- Mediterranean with hot, dry summers and mild, rainy winters
Updated July 2026 · Sources cited: climatestotravel.com, holiday-weather.com
Good to know
Good to Know
- Best visit for beach holidays: June to mid-September, with particularly ideal conditions May-June and September-October when it's warm but not peak-season crowded
- Winter (November-March) brings mild but rainy conditions; December is the wettest month
- Sea temperature ranges 20-25°C (68–77°F) year-round; warmest for swimming July-September at around 24-25°C (77°F)
- Summer temperatures frequently exceed 30°C (86°F); bring sun protection and lightweight clothing
- Almost guaranteed sunshine year-round—about 8.5 hours daily in winter and 14.5 hours in summer
- The Meltemi northwest wind from mid-May onwards provides cooling relief during hot summer months
Coldest Months
- Average Celsius
- 11
- Average Fahrenheit
- 52
- Note
- Daytime highs around 13-16°C (55–61°F); cold nights can drop to 5-7°C (45°F)
Months
- January
- February
Warmest Months
- Average Celsius
- 27
- Average Fahrenheit
- 81
- Note
- July and August regularly exceed 30°C (86°F); occasional periods reach 36-37°C (99°F)
Months
- July
- August
Hiking
- Note
- Spring and autumn preferred; summer can be too hot
Best Months
- May
- October
Beach Swimming
- Warmest Sea Temp Month
- August
- Warmest Sea Temp Celsius
- 24.5
- Warmest Sea Temp Fahrenheit
- 76
Best Months
- June
- July
- August
- September
Wind
Meltemi Wind
- Season
- Mid-May onwards
- Intensity
- Lower intensity than central Aegean islands
- Source Direction
- Northwest
Rainfall
- Summer Pattern
- Almost no rain June-September
- Annual Total Mm
- 730
- Concentration Period
- October to March
Driest Months
- July
- August
Wettest Month
- Month
- December
- Rainfall Mm
- 148
Snowfall
- Occurs
- Occasional, very rare
- Note
- Snow occasionally seen but typically no accumulation at sea level; snow plays virtually no role in the climate
Best Months
Best Months
- May
- June
- September
- October
Climate Type
Mediterranean with hot, dry summers and mild, rainy winters
Worst Months
Worst Months
- January
- February
- November
- December
Peak Season Months
Peak Season Months
- July
- August
AI-generated estimateData refreshed July 2026
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 Kalymnos
Data last updated July 2026 · Verify anything important.