Weather in Istanbul for October 2026
Yellow warning – thunderstorms - See hour by hour.
Until now, October 2026 in Istanbul is slightly cooler than the historical average by 0.6 °C.
Expect cooler weather in the next days in Istanbul with the forecast suggesting a temperature of 16.8 °C, lower than the historical average.
In general, the average temperature in Istanbul at the beginning of October is 21.1 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 18.9 °C by the end of October.
Istanbul experiences moderate rainfall in October, with an average of 7 rainy days and a total precipitation of 56.1 mm.
Is October a good time to visit Istanbul? check out the best time to travel to Istanbul page.
✨ Is October a good time to visit Istanbul? – Ask the AI Weatherman
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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. |  Light rain | 21° /17° | 2.6 mm | 5 | |
| 2 Oct. |  Patchy rain possible | 21° /17° | 2.2 mm | 4 | |
| 3 Oct. | Patchy rain possible | 21° /17° | 1.5 mm | 5 | |
| 4 Oct. |  Sunny | 21° /17° | 0.7 mm | 5 | |
| 5 Oct. | Sunny | 21° /17° | 0.5 mm | 5 | |
| 6 Oct. |  Partly cloudy | 22° /17° | 0.2 mm | 4.9 | |
| 7 Oct. | Light rain | 21° /17° | 6.9 mm | 4.8 | |
| 8 Oct. | Patchy rain possible | 21° /16° | 1.2 mm | 4.7 | |
| 9 Oct. | Patchy rain possible | 20° /16° | 1.3 mm | 4.6 | |
| 10 Oct. |  Overcast | 20° /16° | 0.3 mm | 4 | |
| 11 Oct. |  Cloudy | 21° /17° | 0.7 mm | 4.5 | |
| 12 Oct. | Patchy rain possible | 21° /16° | 1.2 mm | 4.4 | |
| 13 Oct. | Light rain | 19° /16° | 2.7 mm | 4 | |
| 14 Oct. |  Moderate rain | 20° /16° | 15 mm | 4 | |
| 15 Oct. | Light rain | 19° /16° | 2.5 mm | 4 | |
| 16 Oct. | Patchy rain possible | 19° /15° | 1.7 mm | 4 | |
| 17 Oct. | Patchy rain possible | 17° /14° | 2 mm | 3 | |
| 18 Oct. | Patchy rain possible | 17° /14° | 1.9 mm | 3.9 | |
| 19 Oct. | Patchy rain possible | 17° /14° | 0.5 mm | 3.9 | |
| 20 Oct. | Patchy rain possible | 19° /14° | 0.1 mm | 3.8 | |
| 21 Oct. | Sunny | 19° /15° | 0 mm | 3.7 | |
| 22 Oct. | Sunny | 19° /15° | 0.7 mm | 3.6 | |
| 23 Oct. | Patchy rain possible | 20° /15° | 1.2 mm | 3.6 | |
| 24 Oct. | Patchy rain possible | 20° /15° | 2 mm | 3.5 | |
| 25 Oct. | Patchy rain possible | 19° /15° | 1.4 mm | 3.4 | |
| 26 Oct. | Sunny | 20° /15° | 0.3 mm | 3.4 | |
| 27 Oct. | Light rain | 19° /15° | 4.9 mm | 3.3 | |
| 28 Oct. | Light rain | 17° /12° | 2.6 mm | 1.4 | |
| 29 Oct. | Light rain | 18° /15° | 6.7 mm | 0.7 | |
| 30 Oct. | Patchy rain possible | 16° /14° | 1.2 mm | 2.7 | |
| 31 Oct. | Overcast | 16° /14° | 0.2 mm | 2.6 | |
| Next | |||||
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 | 56 mm | 61 mm |
| Wind | 23.8 km/h | 21.9 km/h | 22.3 km/h |
| Humidity | 61% | 66% | 67% |
| Rainy days | 6 days | 7 days | 8 days |
| Dry days | 24 days | 24 days | 22 days |
Planning a trip to Istanbul? Discover the best time to visit
Istanbul in October - FAQ
What are the expected maximum and minimum temperatures in Istanbul during October?
How much rainfall should be expected in Istanbul during October?
What are the typical wind conditions in Istanbul during October?
October rainfall patterns in Istanbul
UV exposure in Istanbul during October
What to pack to Istanbul in October?
Mild · highs around 20 °C, frequent showers
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
👟 Footwear
🎒 Accessories
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.