Climate Insights for Astypálaia

The climate in Astypálaia is warm and mild. The average annual temperature is 19°C and approximately 313mm of precipitation falls per year. January is the wettest month, receiving around 81mm of rainfall. Astypálaia is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, March, when temperatures can drop to 13°C.

Astypálaia sees moderate temperature variation throughout the year, ranging from 13°C to 26°C. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 13°C and an average of 14°C. Daily temperature variation is modest, with an average difference of 1°C between highs and lows. The sharpest temperature change occurs between May and June, with a 4°C shift in average temperatures.

Astypálaia is a quite dry location, receiving approximately 313mm of precipitation annually, which averages out to around 26mm per month. The wettest month is January, averaging 81mm of rainfall. December and February also tend to see above-average precipitation. The driest month is July, with just 0mm. That's 81mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Astypálaia is very windy, with an average annual wind speed of 33km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 39km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in June, with average winds dropping to 28km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 11km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 38km/h in winter, 32km/h in spring, 31km/h in summer, 31km/h in autumn.

It is currently spring in Astypálaia, which began on March 20, 2026. Astypálaia is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 26°C, while the coldest stretch bottoms out in January near 13°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Astypálaia is during April, May, June, July, September, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 17mm per month. By contrast, August can be uncomfortably hot with highs reaching 26°C, while January is the coldest period with lows dropping to 13°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Astypálaia based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.