Climate averages 1991–2020
Mersin 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 Mersin: daytime highs average 14.0°C and nights cool to about 6.8°C. By daytime temperature it is the 10th warmest of the 12 months.
Expect about 126 mm of rain on roughly 9 days, which makes December a wet month (the wettest month of the year). Daylight, from sunrise to sunset, lasts about 9 h 42 min on an average December day.
The nearest other city in this atlas is Tarsus (25 km away). In December its highs average 14.1°C, about as warm as Mersin, with 117 mm of rain.
Among the 138 cities listed in Turkey, Mersin ranks joint 12th of 138 for the warmest December highs and 125th of 138 for the driest December (rainfall, lowest first). The mean December high of those 138 cities is 9.3°C; Mersin is 4.7°C warmer than that mean.
From December to January, average highs fall by 1.8°C to 12.2°C, and monthly rainfall falls from 126 mm to 99 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
Mersin climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 12.2°C4.8°C | 4.8°C | 99 | 9.5 | 9.910 h |
| February | 13.4°C5.2°C | 5.2°C | 62 | 7.8 | 10.811 h |
| March | 16.6°C7.6°C | 7.6°C | 47 | 6.7 | 11.912 h |
| April | 20.3°C11.0°C | 11.0°C | 29 | 5.2 | 13.113 h |
| May | 24.3°C15.1°C | 15.1°C | 21 | 3.6 | 14.114 h |
| June | 28.0°C18.9°C | 18.9°C | 4.7 | 1.5 | 14.615 h |
| July | 30.9°C22.3°C | 22.3°C | 2.0 | 0.4 | 14.414 h |
| August | 31.4°C23.2°C | 23.2°C | 3.3 | 0.9 | 13.614 h |
| September | 29.0°C20.0°C | 20.0°C | 11 | 2.4 | 12.512 h |
| October | 25.2°C16.0°C | 16.0°C | 30 | 3.8 | 11.311 h |
| November | 19.1°C10.8°C | 10.8°C | 70 | 5.3 | 10.210 h |
| December, selected | 14.0°C6.8°C | 6.8°C | 126 | 9.2 | 9.710 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
- Tarsus in DecemberTurkey · 25 kmHigh 14.1°C · Low 6.5°C · 117 mm rain
- Adana in DecemberTurkey · 64 kmHigh 14.5°C · Low 5.9°C · 139 mm rain
- Silifke in DecemberTurkey · 79 kmHigh 15.5°C · Low 9.0°C · 119 mm rain
- Ereğli (Konya), Turkey in DecemberTurkey · 94 kmHigh 7.6°C · Low -1.5°C · 46 mm rain
- Ceyhan in DecemberTurkey · 107 kmHigh 14.5°C · Low 5.8°C · 137 mm rain
- Arsuz (approximate) in DecemberTurkey · 120 kmHigh 14.9°C · Low 10.2°C · 123 mm rain
- Kozan in DecemberTurkey · 126 kmHigh 13.3°C · Low 4.6°C · 149 mm rain
- Niğde in DecemberTurkey · 128 kmHigh 6.2°C · Low -1.5°C · 48 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 Mersin) is explained once on the Mersin year overview and on the Sources, method and limits page.