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Istanbul weather in May 2025
Expect 21°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Istanbul in May. Check more long-term weather averages for Istanbul in May before you book your next holiday to Turkey in 2025/2026.
- 2121°C max day temperature
- 10 hours of sunshine per day
- 99 days with some rainfall
- 1212°C min night temperature
- 1414 hours of daylight per day
- 0No heat & humidity
- 3535 mm of monthly rainfall
- 77 (High) UV index
- 1515°C sea temperature
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Recommended for Turkey
The May 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 / mm) | Imperial (°F / inches)
More about Turkey
How hot is it in Istanbul in May?
Daytime temperatures usually reach 21°C in Istanbul in May, falling to 12°C at night.
How sunny is it in Istanbul in May?
There are normally 10 hours of bright sunshine each day in Istanbul in May - that's 67% of daylight hours.
How warm is the sea around Istanbul in May?
The average sea temperature around Istanbul in May is 15°C.
Does it rain in Istanbul in May?
There are usually 9 days with some rain in Istanbul in May and the average monthly rainfall is 35mm.
Istanbul May sunrise & sunset times
Browse the sunrise and sunset times for Istanbul in May 2025. Select a month to view Istanbul sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Thursday, 1st May 2025 | 06:02 | 20:01 |
Friday, 16th May 2025 | 05:45 | 20:16 |
Saturday, 31st May 2025 | 05:35 | 20:29 |
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