Climate averages 1991–2020
Gemlik 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 Gemlik: daytime highs average 11.2°C and nights cool to about 5.2°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 97 mm of rain on roughly 13 days, which makes December a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 21 min on an average December day.
The nearest other city in this atlas is Yalova (27 km away). In December its highs average 10.6°C, 0.6°C cooler than Gemlik, with 100 mm of rain.
Among the 138 cities listed in Turkey, Gemlik ranks 39th of 138 for the warmest December highs and 84th of 138 for the driest December (rainfall, lowest first). The mean December high of those 138 cities is 9.3°C; Gemlik is 1.9°C warmer than that mean.
From December to January, average highs fall by 1.7°C to 9.5°C, and monthly rainfall falls from 97 mm to 90 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
Gemlik climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.5°C3.2°C | 3.2°C | 90 | 12.7 | 9.610 h |
| February | 10.7°C3.2°C | 3.2°C | 80 | 12.0 | 10.611 h |
| March | 13.7°C5.2°C | 5.2°C | 86 | 12.1 | 11.912 h |
| April | 18.1°C8.9°C | 8.9°C | 65 | 10.2 | 13.313 h |
| May | 22.8°C14.0°C | 14.0°C | 53 | 8.1 | 14.414 h |
| June | 26.8°C18.5°C | 18.5°C | 48 | 7.9 | 15.015 h |
| July | 29.6°C20.7°C | 20.7°C | 26 | 4.5 | 14.815 h |
| August | 30.1°C21.1°C | 21.1°C | 28 | 4.2 | 13.814 h |
| September | 26.1°C18.3°C | 18.3°C | 54 | 6.9 | 12.513 h |
| October | 21.2°C14.5°C | 14.5°C | 77 | 9.1 | 11.211 h |
| November | 16.0°C9.3°C | 9.3°C | 74 | 9.8 | 10.010 h |
| December, selected | 11.2°C5.2°C | 5.2°C | 97 | 12.5 | 9.39 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
- Yalova in DecemberTurkey · 27 kmHigh 10.6°C · Low 4.9°C · 100 mm rain
- Bursa in DecemberTurkey · 27 kmHigh 11.0°C · Low 3.9°C · 102 mm rain
- Nilüfer in DecemberTurkey · 32 kmHigh 11.4°C · Low 4.2°C · 102 mm rain
- Gebze in DecemberTurkey · 47 kmHigh 9.5°C · Low 4.2°C · 86 mm rain
- İnegol in DecemberTurkey · 49 kmHigh 9.3°C · Low 0.8°C · 84 mm rain
- Sultanbeyli in DecemberTurkey · 60 kmHigh 9.7°C · Low 5.3°C · 100 mm rain
- Sancaktepe in DecemberTurkey · 64 kmHigh 9.8°C · Low 5.8°C · 100 mm rain
- Ümraniye in DecemberTurkey · 65 kmHigh 9.6°C · Low 5.7°C · 99 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 Gemlik) is explained once on the Gemlik year overview and on the Sources, method and limits page.