Climate at a glance · Istanbul
Annual mean16°day and night
Precipitation756 mma year
Warmest monthJulyavg high 30°
Coldest monthFebruaryavg low 4°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
756 mm a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 10° | 10° | 12° | 17° | 21° | 27° | 30° | 30° | 25° | 20° | 17° | 12° |
| Avg low | 5° | 4° | 5° | 9° | 12° | 18° | 21° | 22° | 18° | 13° | 10° | 7° |
| Precip, mm | 91 | 76 | 76 | 70 | 57 | 42 | 33 | 20 | 48 | 53 | 100 | 90 |
| Wet days | 12 | 10 | 13 | 10 | 9 | 6 | 4 | 4 | 7 | 7 | 9 | 13 |
| Sunshine | 5.8 h | 6.9 h | 7.5 h | 9.3 h | 11.5 h | 13 h | 13.6 h | 12.6 h | 10.8 h | 8.5 h | 6.9 h | 5.5 h |
| Humidity | 79% | 79% | 77% | 76% | 73% | 72% | 67% | 69% | 71% | 77% | 77% | 81% |
| Sea temperature | 10° | 8° | 9° | 11° | 15° | 22° | 25° | 25° | 24° | 20° | 17° | 14° |
| Daylight | 9 h 37 | 10 h 39 | 11 h 58 | 13 h 20 | 14 h 29 | 15 h 04 | 14 h 47 | 13 h 46 | 12 h 28 | 11 h 06 | 9 h 54 | 9 h 17 |
| UV index (clear sky) | 3 | 4 | 6 | 9 | 10 | 11 | 11 | 10 | 7 | 5 | 3 | 2 |
5-year averages (2021–2025) · Open-Meteo historical weather (ERA5)
41.0082°N, 28.9784°E