Climate averages 1991–2020
Ayvalık weather
in September.
A warm, fairly dry month: the 4th warmest and the 4th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Ayvalık: daytime highs average 25.4°C and nights cool to about 19.6°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 26 mm of rain on roughly 3 days, which makes September a fairly dry month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 29 min on an average September day.
The nearest other city in this atlas is Soma (80 km away). In September its highs average 27.5°C, 2.1°C warmer than Ayvalık, with 27 mm of rain.
Among the 138 cities listed in Turkey, Ayvalık ranks joint 83rd of 138 for the warmest September highs and joint 84th of 138 for the driest September (rainfall, lowest first). The mean September high of those 138 cities is 27.1°C; Ayvalık is 1.7°C cooler than that mean.
From September to October, average highs fall by 4.7°C to 20.7°C, and monthly rainfall rises from 26 mm to 78 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Ayvalık climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 10.8°C7.0°C | 7.0°C | 137 | 11.4 | 9.710 h |
| February | 11.5°C7.2°C | 7.2°C | 122 | 10.8 | 10.711 h |
| March | 13.6°C8.8°C | 8.8°C | 84 | 8.9 | 11.912 h |
| April | 17.0°C11.7°C | 11.7°C | 64 | 7.2 | 13.213 h |
| May | 21.7°C16.0°C | 16.0°C | 34 | 3.9 | 14.314 h |
| June | 26.4°C20.2°C | 20.2°C | 9.7 | 1.6 | 14.915 h |
| July | 29.1°C22.4°C | 22.4°C | 0.6 | 0.2 | 14.615 h |
| August | 29.4°C22.6°C | 22.6°C | 1.7 | 0.2 | 13.714 h |
| September, selected | 25.4°C19.6°C | 19.6°C | 26 | 2.9 | 12.512 h |
| October | 20.7°C16.0°C | 16.0°C | 78 | 5.6 | 11.211 h |
| November | 16.1°C12.1°C | 12.1°C | 122 | 8.9 | 10.110 h |
| December | 12.2°C8.7°C | 8.7°C | 145 | 12.0 | 9.59 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Soma in SeptemberTurkey · 80 kmHigh 27.5°C · Low 16.0°C · 27 mm rain
- Çanakkale in SeptemberTurkey · 96 kmHigh 25.9°C · Low 17.7°C · 38 mm rain
- Manisa in SeptemberTurkey · 101 kmHigh 30.2°C · Low 17.6°C · 24 mm rain
- Karşıyaka in SeptemberTurkey · 102 kmHigh 30.2°C · Low 18.3°C · 23 mm rain
- Bornova in SeptemberTurkey · 105 kmHigh 29.8°C · Low 17.9°C · 24 mm rain
- İzmir in SeptemberTurkey · 108 kmHigh 30.0°C · Low 17.7°C · 24 mm rain
- Akhisar in SeptemberTurkey · 108 kmHigh 29.6°C · Low 15.7°C · 13 mm rain
- Balıkesir in SeptemberTurkey · 109 kmHigh 26.7°C · Low 15.8°C · 23 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Ayvalık) is explained once on the Ayvalık year overview and on the Sources, method and limits page.