Climate averages 1991–2020
Sultanbeyli 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 Sultanbeyli: daytime highs average 9.7°C and nights cool to about 5.3°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 100 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 18 min on an average December day.
The nearest other city in this atlas is Sancaktepe (6 km away). In December its highs average 9.8°C, about as warm as Sultanbeyli, with 100 mm of rain.
Among the 138 cities listed in Turkey, Sultanbeyli ranks 69th of 138 for the warmest December highs and joint 93rd of 138 for the driest December (rainfall, lowest first). The mean December high of those 138 cities is 9.3°C; Sultanbeyli is 0.4°C warmer than that mean.
From December to January, average highs fall by 1.8°C to 7.9°C, and monthly rainfall falls from 100 mm to 87 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
Sultanbeyli climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.9°C3.1°C | 3.1°C | 87 | 12.6 | 9.610 h |
| February | 8.6°C3.2°C | 3.2°C | 71 | 12.1 | 10.611 h |
| March | 11.0°C4.7°C | 4.7°C | 73 | 10.6 | 11.912 h |
| April | 15.3°C8.0°C | 8.0°C | 48 | 8.0 | 13.313 h |
| May | 20.2°C12.8°C | 12.8°C | 35 | 6.1 | 14.414 h |
| June | 24.7°C17.4°C | 17.4°C | 35 | 6.1 | 15.115 h |
| July | 27.2°C20.1°C | 20.1°C | 25 | 3.7 | 14.815 h |
| August | 27.4°C20.8°C | 20.8°C | 24 | 3.7 | 13.814 h |
| September | 23.7°C17.5°C | 17.5°C | 48 | 6.5 | 12.513 h |
| October | 18.9°C13.6°C | 13.6°C | 75 | 9.2 | 11.211 h |
| November | 14.1°C9.0°C | 9.0°C | 73 | 9.9 | 9.910 h |
| December, selected | 9.7°C5.3°C | 5.3°C | 100 | 13.0 | 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
- Sancaktepe in DecemberTurkey · 6 kmHigh 9.8°C · Low 5.8°C · 100 mm rain
- Ümraniye in DecemberTurkey · 14 kmHigh 9.6°C · Low 5.7°C · 99 mm rain
- Gebze in DecemberTurkey · 22 kmHigh 9.5°C · Low 4.2°C · 86 mm rain
- Üsküdar in DecemberTurkey · 23 kmHigh 10.1°C · Low 6.1°C · 99 mm rain
- Şişli in DecemberTurkey · 26 kmHigh 9.8°C · Low 5.6°C · 99 mm rain
- Istanbul in DecemberTurkey · 28 kmHigh 10.1°C · Low 6.4°C · 99 mm rain
- Yalova in DecemberTurkey · 34 kmHigh 10.6°C · Low 4.9°C · 100 mm rain
- Sultangazi in DecemberTurkey · 37 kmHigh 9.6°C · Low 5.3°C · 84 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 Sultanbeyli) is explained once on the Sultanbeyli year overview and on the Sources, method and limits page.
Sancaktepe lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.