Istanbul Weather in October
Turkey · Mediterranean climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
October in Istanbul sees average temperatures ranging from a low of 13.8°C (56.8°F) to a high of 20.8°C (69.4°F), with a mean of 16.9°C (62.4°F). Compared to the annual average of 15.3°C (59.5°F), this month is 1.6°C warmer than the yearly norm. Precipitation averages 44.1mm, making it approximately 20.0mm drier than the monthly average of 64.0mm. The city receives an average of 8.6 hours of sunshine per day during October, with relative humidity averaging 76.6%. Wind speeds reach an average maximum of 20.5 km/h. For travelers, this month offers a temperature experience in Istanbul, with drier-than-average conditions compared to the rest of the year.
Istanbul is a city where you can wake up sweating and need a jacket by sunset. I packed for August heat once and froze on a Bosphorus ferry at 9pm. Layers are essential — even summer evenings dip to 19°C with wind off the water. Pack a scarf (useful for mosques anyway). My favorite window is late September to October: 22°C, low humidity, fewer tourists at the Hagia Sophia. Skip February — cold rain, grey skies, many outdoor cafés shuttered. April brings tulip season and the city reawakens.
October vs Adjacent Months
| Metric | September | October | November |
|---|---|---|---|
| Mean Temp | 21.5°C (70.7°F) | 16.9°C (62.4°F) | 12.8°C (55.0°F) |
| Rainfall | 47.0mm | 44.1mm | 94.5mm |
| Sunshine | 11.0 hrs | 8.6 hrs | 7.0 hrs |
| Humidity | 71.3% | 76.6% | 77.2% |
| Wind | 22.4 km/h | 20.5 km/h | 22.7 km/h |
| Rainy Days | 12.8 | 11.6 | 13.8 |
| Snowfall | 0.0 cm | 0.0 cm | 0.3 cm |
Seasonal Context
October falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Istanbul in October, the data indicates favorable conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Istanbul in October?
The average temperature in Istanbul during October ranges from 13.8°C (56.8°F) to 20.8°C (69.4°F), with a mean of 16.9°C (62.4°F).
How much does it rain in Istanbul in October?
Istanbul receives an average of 44.1mm of precipitation in October, spread across approximately 11.6 rainy days.
What should I pack for Istanbul in October?
Based on October weather data, pack layers including light jackets and t-shirts, plus an umbrella.
Is October a good time to visit Istanbul?
October is a good time to visit Istanbul, with comfortable temperatures and manageable rainfall.
Other Months for Istanbul
Cities with Similar October Climate (Mediterranean)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 41.01°, 28.98°. Timezone: Europe/Istanbul. Last updated: 2026-07-30.