Istanbul weather in April 2026

Q: How warm is it in Istanbul in April?

Daytime temperatures usually reach 16°C in Istanbul in April, falling to 7°C at night.

Q: How sunny is it in Istanbul in April?

There are normally 8 hours of bright sunshine each day in Istanbul in April - that's 58% of daylight hours.

Q: Is the sea cold around Istanbul in April?

The average sea temperature around Istanbul in April is 10°C.

Q: Does it rain in Istanbul in April?

There are usually 11 days with some rain in Istanbul in April and the average monthly rainfall is 50mm.

Expect daytime maximum temperatures of 61°F in Istanbul, Turkey in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 2.0 inches of rainfall in the month.

61
61°F max day temperature
8
8 hours of sunshine per day
11
11 days with some rainfall
45
45°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
2.0
2.0 inches of monthly rainfall
5
5 (Moderate) UV index
50
50°F sea temperature

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The April weather guide for Turkey (Istanbul) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C) | Imperial (°F)