Istanbul Climate
Straddling the Bosphorus between two seas, Istanbul has a transitional climate between Mediterranean and humid subtropical, with high humidity year-round. Summers (June to September) are hot and muggy at 26–30°C with little rain but occasional thunderstorms, while winters (December to March) are cool, damp and cloudy at 6–10°C, sometimes bringing snow when cold air sweeps down from the north. Rain is spread across many months, and chilly northerly winds and fog over the strait are signature features. This page provides an hourly and 14-day forecast along with detailed metrics including humidity, wind, UV index and air quality (AQI).