Istanbul
December
Weather in Istanbul for December 2026
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 11.9 °C by the end of December.
Istanbul experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 69.6 mm.
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Temperatures
Rain 🌧️
More
9
Dry days
22
Rainy days
0
Snow days
12°/9°
Temperatures
22 km/h
Avg max wind
72 %
Avg humidity
Istanbul Weather December
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Temperatures trend during December in Istanbul
See the weather trend as well as the moving average line
December weather in Istanbul day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Partly cloudy | 14° /10° | 2.3 mm | 4 | |
| 2 Dec. |  Sunny | 14° /11° | 2 mm | 4 | |
| 3 Dec. |  Overcast | 14° /12° | 0.2 mm | 4 | |
| 4 Dec. |  Patchy rain possible | 13° /10° | 2.4 mm | 3 | |
| 5 Dec. | Patchy rain possible | 14° /10° | 0.3 mm | 3 | |
| 6 Dec. | Overcast | 14° /11° | 1.5 mm | 4 | |
| 7 Dec. |  Moderate rain at times | 14° /10° | 5.5 mm | 3 | |
| 8 Dec. | Patchy rain possible | 12° /9° | 4.3 mm | 3 | |
| 9 Dec. | Patchy rain possible | 13° /10° | 4.5 mm | 3 | |
| 10 Dec. | Overcast | 15° /10° | 1.8 mm | 4 | |
| 11 Dec. | Moderate rain at times | 14° /11° | 2.7 mm | 3 | |
| 12 Dec. | Patchy rain possible | 13° /10° | 1.7 mm | 3 | |
| 13 Dec. | Moderate rain at times | 13° /9° | 4 mm | 3 | |
| 14 Dec. | Patchy rain possible | 12° /9° | 0.7 mm | 3 | |
| 15 Dec. | Moderate rain at times | 12° /8° | 7.5 mm | 3 | |
| 16 Dec. | Overcast | 11° /7° | 4.1 mm | 3 | |
| 17 Dec. | Sunny | 11° /7° | 2.1 mm | 3 | |
| 18 Dec. | Sunny | 11° /7° | 1.6 mm | 3 | |
| 19 Dec. | Sunny | 11° /7° | 1.1 mm | 3 | |
| 20 Dec. | Sunny | 11° /7° | 0.5 mm | 3 | |
| 21 Dec. | Patchy rain possible | 11° /7° | 2.7 mm | 2 | |
| 22 Dec. | Light rain shower | 10° /6° | 3.8 mm | 2 | |
| 23 Dec. | Light rain shower | 10° /6° | 0.9 mm | 3 | |
| 24 Dec. |  Cloudy | 12° /7° | 0.9 mm | 3 | |
| 25 Dec. | Sunny | 13° /9° | 1.4 mm | 3 | |
| 26 Dec. | Partly cloudy | 12° /9° | 1.9 mm | 3 | |
| 27 Dec. | Partly cloudy | 12° /8° | 1.1 mm | 3 | |
| 28 Dec. | Overcast | 11° /8° | 0.7 mm | 3 | |
| 29 Dec. | Sunny | 11° /8° | 1 mm | 3 | |
| 30 Dec. | Sunny | 13° /8° | 1.5 mm | 3 | |
| 31 Dec. | Sunny | 11° /8° | 0.1 mm | 3 | |
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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.
Change Month
Istanbul weather in December vs November vs January
Compare December weather in Istanbul with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| November | December | January | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 16°/12° | 12°/9° | 10°/6° |
| Rainfall | 69 mm | 70 mm | 86 mm |
| Snowfall | 0 cm | 0 cm | 1 cm |
| Wind | 23.9 km/h | 22.2 km/h | 22.5 km/h |
| Humidity | 67% | 72% | 71% |
| Rainy days | 18 days | 22 days | 20 days |
| Snow days | 0 days | 0 days | 3 days |
| Dry days | 12 days | 9 days | 8 days |
Planning a trip to Istanbul? Discover the best time to visit
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 69.6 mm spread over approximately 22 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.
What to pack to Istanbul in December?
As you prepare for your trip to Istanbul in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Istanbul, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
- Umbrellas/Raincoats: For rainy days
December rainfall patterns in Istanbul
Explore the daily rainfall trends and prepare for Istanbuls December weather 💧
Typically, Istanbul has 22 rainy days in December with a total of 69.6 mm of rainfall.
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