İzmit 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
Poor
Best time to visit: May – September
What is the weather like in İzmit in December?
In December, İzmit is cool: daytime highs average 11 °C, and nights cool down to about 4 °C. The sea averages 11.7 °C – swimming is only for the hardy. The sun is scarce, with only about 2 hours a day. Rain is frequent, with about 13 rainy days and 97 mm in total. All in all, December is not an ideal month for a holiday in İzmit.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 61 | 27 | 16 |
| Day | 16° | 11° | 9° |
| Night | 8° | 4° | 2° |
| Sea | 16° | 12° | 9° |
| Sun | 3 h | 2 h | 2 h |
| Rain days | 9 | 13 | 13 |
More details for December
- Daylight
- 9 h 17 min08:17 – 17:34
- UV index
- 1 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 13 km/haverage daily peakAll months
- Cloud cover
- 68 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 1 day1 cm or more of fresh snowAll months
- Time zone
- UTC+3Europe/Istanbul
How the score comes together
- Temperatureweight 50 %31 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 30 %37 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in December
- A jumper for the evenings
- Rain jacket or umbrella
İzmit in December: quick answers
Is İzmit hot in December?
No. In December, İzmit is cool: daytime highs average 11 °C and nights drop to about 4 °C.
Can you swim in İzmit in December?
Only if you don't mind cold water: in December the sea averages just 11.7 °C. Comfortable swimming is possible from June to September.
Does it rain much in İzmit in December?
Rain is frequent, with about 13 rainy days and 97 mm in total.
İzmit month by month
The whole year in İzmitAll 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