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📊 Monthly Climate Overview
| Month | Max °C | Min °C | Rain mm | Rain Days | Sun h | Wind km/h | Sea °C |
|---|---|---|---|---|---|---|---|
| Jan | 9.2°C | 3.9°C | 103.1 mm | 13 | 5.6 h | 22.9 km/h | 10.5°C |
| Feb | 10.4°C | 4.7°C | 75 mm | 11 | 6.9 h | 23.6 km/h | 8.6°C |
| Mar | 12.1°C | 5.6°C | 80.1 mm | 11 | 7.8 h | 22 km/h | 9.6°C |
| Apr | 16.5°C | 8.5°C | 52.1 mm | 9 | 10.3 h | 19.8 km/h | 10.7°C |
| May | 21.2°C | 13.6°C | 53.2 mm | 8 | 11.8 h | 19.8 km/h | 13.5°C |
| Jun | 25.5°C | 18.2°C | 55.7 mm | 9 | 12.8 h | 19.4 km/h | 20°C |
| Jul | 28.5°C | 20.7°C | 30.9 mm | 5 | 13.5 h | 22.3 km/h | 23.9°C |
| Aug | 29.1°C | 21.8°C | 21.2 mm | 4 | 12.6 h | 24.5 km/h | 24.1°C |
| Sep | 25.3°C | 18.4°C | 48.9 mm | 7 | 10.9 h | 22.6 km/h | 23.8°C |
| Oct | 20°C | 14°C | 62.2 mm | 8 | 8.2 h | 21 km/h | 20.9°C |
| Nov | 15.9°C | 10.3°C | 82 mm | 9 | 7.0 h | 21.7 km/h | 17.2°C |
| Dec | 11.5°C | 6.5°C | 86.6 mm | 13 | 5.5 h | 22.4 km/h | 12.5°C |
📖Climate & Best Time to Visit Istanbul
Istanbul (Turkey) has a Mediterranean / mild temperate climate with an annual average of around 16 °C. Daytime highs average 19 °C, while nights cool to about 12 °C. The destination sees roughly 751 mm of rainfall per year and 9.4 hours of sunshine per day on average.
Where Europe and Asia meet across the Bosphorus — the Hagia Sophia, Blue Mosque, Grand Bazaar and ferry rides between two continents define its charm.
Spring and autumn are ideal for a city break: July is the sunniest month with 13.5 hours of sun per day, and mild temperatures make exploring on foot comfortable. Peak summer (August, up to 29.1 °C) can get exhausting, while in January nights drop to 3.9 °C.
Note: with roughly 25 °C between the hottest and coldest month, picking the right time of year matters a lot here.
🎟️ Top activities in Istanbul
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Frequently asked questions about Istanbul
When is the best time to visit Istanbul?
The best time to visit Istanbul: April, May, October and November – best in May (avg. 17.4 °C, 8 rainy days). Based on the monthly values for 2014 to 2023.
What are the temperatures in Istanbul?
The warmest month is August with an average of 25.5 °C and daytime highs around 29.1 °C. The coldest month is January with an average of 6.6 °C and night-time lows around 3.9 °C.
How many rainy days does Istanbul have?
January has the most rainy days with 13 rainy days. The driest month is August with 4 rainy days.
What is the sea temperature near Istanbul?
The water is warmest in August at an average of 24.1 °C and coolest in February at 8.6 °C.