Climate averages 1991–2020
Bilecik weather
in December.
A cool, moderately wet month: the 11th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Bilecik: daytime highs average 8.4°C and nights cool to about 0.1°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 62 mm of rain on roughly 10 days, which makes December a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 23 min on an average December day.
The nearest other city in this atlas is İnegol (40 km away). In December its highs average 9.3°C, 0.9°C warmer than Bilecik, with 84 mm of rain.
Among the 138 cities listed in Turkey, Bilecik ranks 92nd of 138 for the warmest December highs and 37th of 138 for the driest December (rainfall, lowest first). The mean December high of those 138 cities is 9.3°C; Bilecik is 0.8°C cooler than that mean.
From December to January, average highs fall by 1.8°C to 6.6°C, and monthly rainfall falls from 62 mm to 58 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
Bilecik climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.6°C-1.9°C | -1.9°C | 58 | 10.4 | 9.710 h |
| February | 8.5°C-1.4°C | -1.4°C | 53 | 10.0 | 10.611 h |
| March | 12.0°C1.1°C | 1.1°C | 64 | 11.1 | 11.912 h |
| April | 16.8°C4.9°C | 4.9°C | 56 | 10.5 | 13.213 h |
| May | 21.5°C9.8°C | 9.8°C | 49 | 9.2 | 14.414 h |
| June | 25.1°C13.8°C | 13.8°C | 38 | 7.7 | 15.015 h |
| July | 28.1°C16.6°C | 16.6°C | 15 | 3.7 | 14.715 h |
| August | 28.8°C17.1°C | 17.1°C | 13 | 3.2 | 13.814 h |
| September | 25.0°C13.2°C | 13.2°C | 24 | 5.0 | 12.512 h |
| October | 19.8°C9.1°C | 9.1°C | 44 | 6.9 | 11.211 h |
| November | 13.9°C3.6°C | 3.6°C | 44 | 7.8 | 10.010 h |
| December, selected | 8.4°C0.1°C | 0.1°C | 62 | 10.1 | 9.49 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
- İnegol in DecemberTurkey · 40 kmHigh 9.3°C · Low 0.8°C · 84 mm rain
- Eskişehir in DecemberTurkey · 61 kmHigh 7.2°C · Low -1.1°C · 49 mm rain
- İzmit in DecemberTurkey · 69 kmHigh 10.5°C · Low 3.4°C · 110 mm rain
- Derince in DecemberTurkey · 70 kmHigh 10.5°C · Low 3.7°C · 103 mm rain
- Gemlik in DecemberTurkey · 77 kmHigh 11.2°C · Low 5.2°C · 97 mm rain
- Bursa in DecemberTurkey · 78 kmHigh 11.0°C · Low 3.9°C · 102 mm rain
- Adapazarı in DecemberTurkey · 80 kmHigh 9.9°C · Low 2.0°C · 103 mm rain
- Kütahya in DecemberTurkey · 80 kmHigh 6.9°C · Low -1.0°C · 54 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 Bilecik) is explained once on the Bilecik year overview and on the Sources, method and limits page.