Mersin weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Fair
Best time to visit: April – June, September – November
What is the weather like in Mersin in December?
In December, Mersin is cool: daytime highs average 14 °C, and nights cool down to about 9 °C. The sea averages 20.2 °C – refreshing for a swim. Expect around 4 hours of sunshine a day. Rain falls on about 9 days, adding up to 112 mm. All in all, December is a so-so month for a holiday in Mersin.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 87 | 55 | 46 |
| Day | 19° | 14° | 12° |
| Night | 13° | 9° | 7° |
| Sea | 23° | 20° | 18° |
| Sun | 6 h | 4 h | 5 h |
| Rain days | 5 | 9 | 9 |
More details for December
- Daylight
- 9 h 40 min07:47 – 17:26
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 11 km/haverage daily peakAll months
- Cloud cover
- 48 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+3Europe/Istanbul
How the score comes together
- Temperatureweight 50 %61 %
- Sunshineweight 20 %23 %
- Few rainy daysweight 30 %66 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- Swimwear
- A jumper for the evenings
- Rain jacket or umbrella
Mersin in December: quick answers
Is Mersin hot in December?
No. In December, Mersin is cool: daytime highs average 14 °C and nights drop to about 9 °C.
Can you swim in Mersin in December?
Yes. In December the sea averages 20.2 °C – refreshing for a swim.
Does it rain much in Mersin in December?
Rain falls on about 9 days, adding up to 112 mm.
Mersin month by month
The whole year in MersinAll destinations: TurkeyWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences