Istanbul
December
Weather in Istanbul for December 2025
Your guide to Istanbul weather in December - trends and predictions
In general, the average temperature in Istanbul at the beginning of December is 13.9 °C. As the month progressed, temperatures tended to moderately fall, reaching an average of 12.9 °C by the end of December.
Istanbul in December brings notable rainfall, with an average of 19 rainy days and a total precipitation of 63.9 mm.
Temperatures
Rain 🌧️
12
Dry days
19
Rainy days
0
Snow days
12°/9°
Temperatures
22 km/h
Avg max wind
72 %
Avg humidity
Istanbul in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  14° | 2  14° | 3  15° | 4  13° | 5 13° | 6 14° | 7  14° |
| 8 12° | 9  14° | 10 15° | 11 14° | 12 13° | 13 13° | 14 12° |
| 15 12° | 16 10° | 17 11° | 18 11° | 19 10° | 20 11° | 21 11° |
| 22 10° | 23 10° | 24 11° | 25 14° | 26 13° | 27 13° | 28 12° |
| 29 12° | 30 13° | 31 13° |
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Temperatures trend during December in Istanbul
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Partly cloudy | 14° /10° | 1.9 mm | 4 | |
| 2 Dec. | Sunny | 14° /11° | 2.5 mm | 4 | |
| 3 Dec. | Overcast | 15° /12° | 0.3 mm | 4 | |
| 4 Dec. | Patchy rain possible | 13° /9° | 3 mm | 3 | |
| 5 Dec. | Patchy rain possible | 13° /9° | 0.3 mm | 3 | |
| 6 Dec. | Partly cloudy | 14° /10° | 1.8 mm | 4 | |
| 7 Dec. | Moderate rain at times | 14° /10° | 1.7 mm | 4 | |
| 8 Dec. | Patchy rain possible | 12° /9° | 4.2 mm | 3 | |
| 9 Dec. | Cloudy | 14° /10° | 5.7 mm | 3 | |
| 10 Dec. | Overcast | 15° /11° | 2.2 mm | 4 | |
| 11 Dec. | Moderate rain at times | 14° /11° | 3.2 mm | 3 | |
| 12 Dec. | Patchy rain possible | 13° /10° | 2.1 mm | 3 | |
| 13 Dec. | Moderate rain at times | 13° /9° | 4.8 mm | 3 | |
| 14 Dec. | Patchy rain possible | 12° /9° | 0.8 mm | 3 | |
| 15 Dec. | Moderate rain at times | 12° /8° | 9 mm | 3 | |
| 16 Dec. | Overcast | 10° /7° | 4.9 mm | 3 | |
| 17 Dec. | Overcast | 11° /7° | 2.6 mm | 3 | |
| 18 Dec. | Sunny | 11° /6° | 2 mm | 3 | |
| 19 Dec. | Sunny | 10° /7° | 1.4 mm | 3 | |
| 20 Dec. | Sunny | 11° /7° | 0.6 mm | 3 | |
| 21 Dec. | Patchy rain possible | 11° /7° | 3 mm | 3 | |
| 22 Dec. | Patchy rain possible | 10° /5° | 4.2 mm | 3 | |
| 23 Dec. | Patchy rain possible | 10° /6° | 0.6 mm | 3 | |
| 24 Dec. | Partly cloudy | 11° /7° | 1.1 mm | 3 | |
| 25 Dec. | Sunny | 14° /9° | 0.6 mm | 4 | |
| 26 Dec. | Partly cloudy | 13° /9° | 2.2 mm | 4 | |
| 27 Dec. | Partly cloudy | 13° /9° | 1 mm | 4 | |
| 28 Dec. | Overcast | 12° /9° | 0.5 mm | 3 | |
| 29 Dec. | Sunny | 12° /9° | 1.1 mm | 3 | |
| 30 Dec. | Sunny | 13° /9° | 0.5 mm | 3 | |
| 31 Dec. | Sunny | 13° /9° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Istanbul in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Istanbul forecast closer to your planned date for the most up-to-date weather information.
Istanbul in December - FAQ
What are the expected maximum and minimum temperatures in Istanbul during December?
During December, expect a variety of temperatures with highs around 12° and lows near 9°, suitable for diverse activities and preferences.
How much rainfall should be expected in Istanbul during December?
Moderate rainfall is anticipated in Istanbul during December, with a total of 63.9 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Istanbul during December?
The average wind speed in Istanbul during December is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Istanbul
Explore the daily rainfall trends and prepare for Istanbuls December weather 💧
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