Climate averages 1991–2020
Soma weather
in December.
A cool, wet month: the 11th warmest and the joint 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Soma: daytime highs average 10.7°C and nights cool to about 3.4°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 96 mm of rain on roughly 11 days, which makes December a wet month (the joint 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 28 min on an average December day.
The nearest other city in this atlas is Akhisar (36 km away). In December its highs average 11.5°C, 0.8°C warmer than Soma, with 65 mm of rain.
Among the 138 cities listed in Turkey, Soma ranks joint 47th of 138 for the warmest December highs and joint 82nd of 138 for the driest December (rainfall, lowest first). The mean December high of those 138 cities is 9.3°C; Soma is 1.4°C warmer than that mean.
From December to January, average highs fall by 1.3°C to 9.3°C, and monthly rainfall rises from 96 mm to 97 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
Soma climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.3°C1.7°C | 1.7°C | 97 | 10.1 | 9.710 h |
| February | 10.9°C2.2°C | 2.2°C | 96 | 10.5 | 10.711 h |
| March | 14.2°C4.0°C | 4.0°C | 82 | 10.0 | 11.912 h |
| April | 18.8°C7.6°C | 7.6°C | 69 | 8.8 | 13.213 h |
| May | 24.0°C12.5°C | 12.5°C | 47 | 7.1 | 14.314 h |
| June | 28.7°C16.9°C | 16.9°C | 24 | 5.1 | 14.915 h |
| July | 31.5°C19.3°C | 19.3°C | 6.6 | 1.7 | 14.615 h |
| August | 31.6°C19.6°C | 19.6°C | 5.0 | 1.5 | 13.714 h |
| September | 27.5°C16.0°C | 16.0°C | 27 | 3.6 | 12.512 h |
| October | 21.8°C12.0°C | 12.0°C | 64 | 6.1 | 11.211 h |
| November | 15.8°C7.0°C | 7.0°C | 85 | 7.9 | 10.110 h |
| December, selected | 10.7°C3.4°C | 3.4°C | 96 | 10.6 | 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
- Akhisar in DecemberTurkey · 36 kmHigh 11.5°C · Low 2.7°C · 65 mm rain
- Balıkesir in DecemberTurkey · 57 kmHigh 10.3°C · Low 3.6°C · 80 mm rain
- Manisa in DecemberTurkey · 66 kmHigh 12.5°C · Low 4.8°C · 108 mm rain
- Turgutlu in DecemberTurkey · 77 kmHigh 12.0°C · Low 4.0°C · 91 mm rain
- Ayvalık in DecemberTurkey · 80 kmHigh 12.2°C · Low 8.7°C · 145 mm rain
- Bornova in DecemberTurkey · 85 kmHigh 12.6°C · Low 5.1°C · 109 mm rain
- Salihli in DecemberTurkey · 91 kmHigh 12.2°C · Low 4.3°C · 82 mm rain
- Karşıyaka in DecemberTurkey · 92 kmHigh 12.9°C · Low 5.5°C · 101 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 Soma) is explained once on the Soma year overview and on the Sources, method and limits page.