See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
19°
Overcast
Feels Like: 20°
Min: 19°
Max: 21°
The next few hours will be overcast, with today reaching 21°C and dropping to 18°C. The coming days will be mostly clear
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:52
Sunrise
19:04
Sunset
Moon
Waxing Crescent
12:27
Moonrise
21:33
Moonset
Daily Forecast
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Air Quality Data Available
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UV Index
Humidity
Weather in Istanbul today, September 16, 2026
Rain features in Istanbul on September 16, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Early hours look the most unsettled, with rain probability near 60% by 11:00. The thickest cloud arrives around 07:00, reaching about 100%.
Expect highs of 21°C and cooler readings close to 19°C. Moisture in the air spans 65%-85%, with the highest values around 22:00. Expect gentle winds, highest near 17:00 at 4.3 km/h.
Afternoon showers stay in play, peaking near 48% around 13:00. Skies remain cluttered, with cover about 100% by 12:00. Visibility holds near 33.9 km, though it can fall to 25.9 km. Sunrise is at 06:52 and sunset at 19:04, giving 12 hours 12 minutes of sunlight today.
Taken together, Istanbul looks wet enough on September 16, 2026 that flexible outdoor plans work best, with temperatures peaking near 21°C.
Frequently asked questions about weather in Istanbul
How warm does it get in Istanbul?
The warmest month in Istanbul is August, with average high temperatures of 28°C. The average temperature during this period is around 25°C.
How cold does it get in Istanbul?
The coldest month in Istanbul is January, with average low temperatures of 6°C. The average temperature during this period is around 7°C.
What is the wettest time of year in Istanbul?
The wettest month in Istanbul is January, with an average of 106mm of precipitation.
What is the driest time of year in Istanbul?
The driest month in Istanbul is August, with an average of 16mm of precipitation.
