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Istanbul is busiest from May to September, when the weather is consistently warm and sunny. In July and August the city can become uncomfortably hot and crowded and many locals escape to the islands or the coast. The most pleasant times to visit are in late spring and early autumn.
Winter is cold wet and windy with grey skies. There is frequent rain and occasional sleet and snow. Spring is a delightful time with mild weather, longer days and the start of the tourist season. Summer is hot and humid though evenings by the Bosphorus can be pleasantly cool. There are also occasional thunderstorms. Autumn brings rain though the sea is still warm enough to swim in September.
Read more on this destination in the AA Citypack Guide to Istanbul.
Average Climate in Istanbul
- January - 47°F / 8°C
- February - 48°F / 9°C
- March - 52°F / 11°C
- April - 62°F / 17°C
- May - 70°F / 21°C
- June - 79°F / 26°C
- July - 82°F / 28°C
- August - 82°F / 28°C
- September - 77°F / 25°C
- October - 67°F / 19°C
- November - 59°F / 15°C
- December - 52°F / 11°C