Climate Insights for Ayvalık

The climate in Ayvalık is temperate. The average annual temperature is 17°C and approximately 806mm of precipitation falls per year. January is the wettest month, receiving around 185mm of rainfall. Ayvalık is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, March, when temperatures can drop to 8°C.

Ayvalık sees moderate temperature variation throughout the year, ranging from 8°C to 28°C. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 8°C and an average of 10°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between May and June, with a 5°C shift in average temperatures.

Ayvalık is a moderately rainy area, receiving approximately 806mm of precipitation annually, which averages out to around 67mm per month. The wettest month is January, averaging 185mm of rainfall. December and November also tend to see above-average precipitation. The driest month is July, with just 1mm. That's 183mm 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.

Ayvalık is mildly breezy, with an average annual wind speed of 19km/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 22km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in May, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 7km/h gap 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 21km/h in winter, 17km/h in spring, 18km/h in summer, 19km/h in autumn.

It is currently autumn in Ayvalık, which began on September 23, 2026. Ayvalık 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 28°C, while the coldest stretch bottoms out in January near 8°C. Winter is next, beginning on December 21, 2026 (87 days from now).

The best time to visit Ayvalık is during April, May, June, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 30mm per month. By contrast, August can be uncomfortably hot with highs reaching 28°C, while January is the coldest period with lows dropping to 8°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Ayvalık 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.