Climate averages 1991–2020
Ayvalık weather
in December.
A cool, wet month: the 10th warmest and the wettest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Ayvalık: daytime highs average 12.2°C and nights cool to about 8.7°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 145 mm of rain on roughly 12 days, which makes December a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 27 min on an average December day.
The nearest other city in this atlas is Soma (80 km away). In December its highs average 10.7°C, 1.5°C cooler than Ayvalık, with 96 mm of rain.
Among the 138 cities listed in Turkey, Ayvalık ranks joint 24th of 138 for the warmest December highs and 131st of 138 for the driest December (rainfall, lowest first). The mean December high of those 138 cities is 9.3°C; Ayvalık is 2.9°C warmer than that mean.
From December to January, average highs fall by 1.4°C to 10.8°C, and monthly rainfall falls from 145 mm to 137 mm.
The annual picture
December 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 | 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, selected | 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
December in nearby cities
- Soma in DecemberTurkey · 80 kmHigh 10.7°C · Low 3.4°C · 96 mm rain
- Çanakkale in DecemberTurkey · 96 kmHigh 10.9°C · Low 5.8°C · 94 mm rain
- Manisa in DecemberTurkey · 101 kmHigh 12.5°C · Low 4.8°C · 108 mm rain
- Karşıyaka in DecemberTurkey · 102 kmHigh 12.9°C · Low 5.5°C · 101 mm rain
- Bornova in DecemberTurkey · 105 kmHigh 12.6°C · Low 5.1°C · 109 mm rain
- İzmir in DecemberTurkey · 108 kmHigh 12.4°C · Low 4.8°C · 109 mm rain
- Akhisar in DecemberTurkey · 108 kmHigh 11.5°C · Low 2.7°C · 65 mm rain
- Balıkesir in DecemberTurkey · 109 kmHigh 10.3°C · Low 3.6°C · 80 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.