Weather Forecast for the region of Istanbul in Turkey
Byzantium - Constantinopolis - Esenyurt - Gebze - Büyükcekmece - Marmara - Basinkoy - Cinar
Average monthly weather data for the region of Istanbul in Turkey
| Minimum Temperature | Maximum Temperature | Water Temperature | Sunshine Hours | Probability of Rain | Humidity | |
| January | 4°C 39°F | 8°C 46°F | 9°C 48°F | 4 | 46% | 78% |
| February | 5°C 41°F | 9°C 48°F | 8°C 46°F | 4 | 49% | 76% |
| March | 6°C 43°F | 12°C 54°F | 10°C 50°F | 5 | 37% | 74% |
| April | 9°C 48°F | 17°C 63°F | 11°C 52°F | 7 | 27% | 73% |
| May | 14°C 57°F | 22°C 72°F | 15°C 59°F | 9 | 16% | 70% |
| June | 19°C 66°F | 27°C 81°F | 19°C 66°F | 10 | 12% | 69% |
| July | 21°C 70°F | 30°C 86°F | 24°C 75°F | 10 | 6% | 68% |
| August | 22°C 72°F | 30°C 86°F | 25°C 77°F | 9 | 15% | 72% |
| September | 18°C 64°F | 25°C 77°F | 23°C 73°F | 7 | 25% | 72% |
| October | 14°C 57°F | 20°C 68°F | 20°C 68°F | 5 | 31% | 77% |
| November | 10°C 50°F | 15°C 59°F | 16°C 61°F | 4 | 36% | 79% |
| December | 6°C 43°F | 10°C 50°F | 11°C 52°F | 3 | 42% | 80% |
Maximum Temperature = Average maximum temperature of the recent years in Istanbul. The temperature may sometimes be higher or lower.
Water Temperature = Average water temperature of the recent years in Istanbul. The temperature may be sometimes below or above this value. On shallow beaches, the temperature will be higher in summer.
Sunshine Hours = Average number of sunshine hours per day in Istanbul.
Probability of Rain = The average daily probability of rain in Istanbul.
Humidity = The average humidity in Istanbul. Depending on the actual wind and the sunshine amount, the value may be higher or lower.
