Zagreb weather in May 2026

Q: How hot is it in Zagreb in May?

Daytime temperatures usually reach 21°C in Zagreb in May, falling to 12°C at night.

Q: How sunny is it in Zagreb in May?

There are normally 8 hours of bright sunshine each day in Zagreb in May - that's 54% of daylight hours.

Q: How warm is the sea around Zagreb in May?

The average sea temperature around Zagreb in May is 18°C.

Q: Does it rain in Zagreb in May?

There are usually 12 days with some rain in Zagreb in May and the average monthly rainfall is 69mm.

Expect daytime maximum temperatures of 21°C in Zagreb, Croatia in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 94 mm of rainfall in the month.

21
21°C max day temperature
7
7 hours of sunshine per day
15
15 days with some rainfall
10
10°C min night temperature
15
15 hours of daylight per day
0
No heat & humidity
94
94 mm of monthly rainfall
7
7 (High) UV index

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The May weather guide for Croatia (Zagreb) 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)