Istanbul Weather by Month
Twelve months of Istanbul, Turkey weather — averages from 2006–2025.
Istanbul's warmest month is August (average high 28.9°C (84°F)) and the coolest is January (8.9°C (48°F)). The most rain falls in January (about 96 mm), and August is the driest (about 17 mm). July is the sunniest, with about 13.7 hours of sunshine a day.
Best months to visit Istanbul
Ranked within Istanbul's own year by temperature comfort, rainy days and sunshine — historical averages, not a forecast.
Istanbul month by month
January
FairHigh 8.9°C (48°F)
Low 4°C (39.2°F)
- Rainfall
- 96 mm (3.8 in)
- Rainy days
- 13 rainy days
- Sunshine
- 5.8 h sunshine / day
February
FairHigh 9.7°C (49.5°F)
Low 4.3°C (39.7°F)
- Rainfall
- 72 mm (2.8 in)
- Rainy days
- 11 rainy days
- Sunshine
- 6.9 h sunshine / day
March
GoodHigh 12.1°C (53.8°F)
Low 5.7°C (42.3°F)
- Rainfall
- 73 mm (2.9 in)
- Rainy days
- 11 rainy days
- Sunshine
- 8.2 h sunshine / day
April
GoodHigh 16.1°C (61°F)
Low 8.7°C (47.7°F)
- Rainfall
- 46 mm (1.8 in)
- Rainy days
- 8 rainy days
- Sunshine
- 10.2 h sunshine / day
May
GreatHigh 21°C (69.8°F)
Low 13.5°C (56.3°F)
- Rainfall
- 43 mm (1.7 in)
- Rainy days
- 7 rainy days
- Sunshine
- 12.1 h sunshine / day
June
GreatHigh 25.9°C (78.6°F)
Low 18.4°C (65.1°F)
- Rainfall
- 40 mm (1.6 in)
- Rainy days
- 7 rainy days
- Sunshine
- 13.1 h sunshine / day
July
GreatHigh 28.6°C (83.5°F)
Low 21°C (69.8°F)
- Rainfall
- 22 mm (0.9 in)
- Rainy days
- 4 rainy days
- Sunshine
- 13.7 h sunshine / day
August
GreatHigh 28.9°C (84°F)
Low 21.8°C (71.2°F)
- Rainfall
- 17 mm (0.7 in)
- Rainy days
- 3 rainy days
- Sunshine
- 12.7 h sunshine / day
September
GreatHigh 24.9°C (76.8°F)
Low 18.4°C (65.1°F)
- Rainfall
- 48 mm (1.9 in)
- Rainy days
- 7 rainy days
- Sunshine
- 10.8 h sunshine / day
October
GreatHigh 19.5°C (67.1°F)
Low 14°C (57.2°F)
- Rainfall
- 76 mm (3 in)
- Rainy days
- 9 rainy days
- Sunshine
- 8.3 h sunshine / day
November
GoodHigh 15.5°C (59.9°F)
Low 10.2°C (50.4°F)
- Rainfall
- 70 mm (2.8 in)
- Rainy days
- 8 rainy days
- Sunshine
- 7.2 h sunshine / day
December
FairHigh 11.1°C (52°F)
Low 6.4°C (43.5°F)
- Rainfall
- 92 mm (3.6 in)
- Rainy days
- 12 rainy days
- Sunshine
- 5.5 h sunshine / day
More Turkey cities by month
Based on 20 years of historical weather data (2006–2025) from Open-Meteo. Monthly averages, not a forecast.