Weather in Istanbul for October 2025
Until now, October 2025 in Istanbul is slightly cooler than the historical average by -1.4 °C.
Expect cooler weather in the next days in Istanbul with the forecast suggesting a temperature of 17.2 °C, lower than the historical average.
In general, the average temperature in Istanbul at the beginning of October is 21.9 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 19.3 °C by the end of October.
Istanbul experiences moderate rainfall in October, with an average of 9 rainy days and a total precipitation of 19.8 mm.
Is October a good time to visit Istanbul? check out the best time to travel to Istanbul page.
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Istanbul Weather October
Temperatures trend during October in Istanbul
October weather in Istanbul day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Oct. |  Patchy rain possible | 21° /17° | 2.4 mm | 5 | |
| 2 Oct. | Patchy rain possible | 21° /17° | 0.8 mm | 5 | |
| 3 Oct. |  Partly cloudy | 22° /17° | 1.4 mm | 6 | |
| 4 Oct. |  Sunny | 22° /17° | 0.8 mm | 5 | |
| 5 Oct. | Patchy rain possible | 22° /17° | 0.6 mm | 5 | |
| 6 Oct. | Partly cloudy | 23° /17° | 0.3 mm | 6 | |
| 7 Oct. | Patchy rain possible | 22° /17° | 8.3 mm | 5 | |
| 8 Oct. | Sunny | 21° /16° | 1.4 mm | 5 | |
| 9 Oct. | Patchy rain possible | 20° /16° | 1.6 mm | 5 | |
| 10 Oct. |  Overcast | 20° /16° | 0.3 mm | 5 | |
| 11 Oct. | Overcast | 21° /16° | 0.8 mm | 5 | |
| 12 Oct. | Patchy rain possible | 21° /15° | 1.1 mm | 5 | |
| 13 Oct. | Partly cloudy | 20° /15° | 1.5 mm | 5 | |
| 14 Oct. | Sunny | 21° /15° | 0.1 mm | 5 | |
| 15 Oct. | Sunny | 20° /16° | 0.7 mm | 5 | |
| 16 Oct. | Patchy rain possible | 20° /15° | 0.5 mm | 4 | |
| 17 Oct. | Patchy rain possible | 18° /14° | 1.7 mm | 4 | |
| 18 Oct. | Patchy rain possible | 18° /14° | 2 mm | 4 | |
| 19 Oct. | Patchy rain possible | 18° /13° | 0.6 mm | 4 | |
| 20 Oct. | Sunny | 19° /13° | 0.2 mm | 5 | |
| 21 Oct. | Sunny | 19° /14° | 0 mm | 5 | |
| 22 Oct. | Sunny | 19° /14° | 0.4 mm | 5 | |
| 23 Oct. | Partly cloudy | 20° /15° | 0 mm | 5 | |
| 24 Oct. | Sunny | 20° /15° | 2.4 mm | 5 | |
| 25 Oct. | Partly cloudy | 19° /15° | 1.5 mm | 5 | |
| 26 Oct. | Sunny | 20° /15° | 0.1 mm | 5 | |
| 27 Oct. | Sunny | 20° /15° | 2.9 mm | 5 | |
| 28 Oct. | Partly cloudy | 19° /14° | 1.2 mm | 5 | |
| 29 Oct. | Partly cloudy | 19° /14° | 0 mm | 5 | |
| 30 Oct. | Sunny | 19° /14° | 0 mm | 0.6 | |
| 31 Oct. | Partly cloudy | 19° /15° | 0 mm | 0.5 | |
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Istanbul weather in October vs September vs November
| September | October | November | |
|---|---|---|---|
| Weather | Patchy rain possible | Patchy rain possible | Patchy rain possible |
| Temperatures | 25°/20° | 20°/16° | 16°/12° |
| Rainfall | 41 mm | 20 mm | 69 mm |
| Wind | 23.2 km/h | 22 km/h | 23.9 km/h |
| Humidity | 60% | 65% | 67% |
| Rainy days | 13 days | 9 days | 18 days |
| Dry days | 17 days | 22 days | 12 days |
Planning a trip to Istanbul? Discover the best time to visit
Istanbul in October - FAQ
What to pack to Istanbul in October?
As you prepare for your trip to Istanbul in October, 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 October, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Layered Clothing: Light sweaters, long-sleeve shirts, light jackets, and comfortable pants
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Accessories
- Umbrellas/Raincoats: For rainy days
October rainfall patterns in Istanbul
UV exposure in Istanbul during October
Quick links
Where is Istanbul?Get accurate weather forecasts for Istanbul, located at latitude 41.014 and longitude 28.95. Stay updated with localized weather information tailored for Istanbul.