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Zagreb in May: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Zagreb in May will be like? Take a look at our weather guide for Zagreb, based on historical data.
Check flight prices to Zagreb on Avionero:
May

Weather in Zagreb in May 2025

Good Weather
Mild
🌧️
Rainy
Planning a trip to Zagreb in May? You are in luck! The weather is generally good, with an average maximum temperature of +21°C and approximately 8 sunny days. Just be prepared for some rain, as there are usually around 14 rainy days and 87 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+21°C
Avg. max. temperature
+2°C
Min.
+33°C
Max.
87 mm
Total precipitation
69%
Avg. humidity
2 m/s
Avg. wind
8 ☀️
Sunny Days
4 ⛅️
Cloudy
14 🌦
Rainy
Our opinion: Zagreb has good weather in May.

Average temperature in Zagreb in May

Here are the expected maximum, average and minimum temperatures in Zagreb for May based on the historical data.
Last Year
Historical Data

Going from a maximum of +27°C during the day to a minimum of +7°C during the night, the temperature in May averages around +20°C.

The average maximum temperature goes up 5% by the end of the month, compared with the beginning of the month, from +20°C to +21°C.

Is Zagreb warm or cold in May?

Zagreb is typically mild in May.

Maximum temperatures go up compared to the previous month from +17°C to +21°C. The minimum temperature also goes up from +6°C to +11°C.

Pack a light jacket as it will be warm in the day and cool in the evenings.

Take a look at how May is compared to other months in Zagreb:

Climate in Zagreb in May

Zagreb weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+17°C+21°C+25°C
Min. temperature
-5°C+2°C+5°C
Max. temperature
+29°C+33°C+36°C
Rainfall
68 mm87 mm86 mm
Wind
2 m/s2 m/s1 m/s
Humidity
67%69%70%
Air pressure
1013 HPa1014 HPa1014 HPa
Sunny days
989
Cloudy days
543
Rainy days
141411
Snowy days
100

May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +17°C to +21°C during the day. Prepare for more rain. Average rainfall goes from 68 mm to 87 mm. Humidity rises from 67% to 69%. The average wind speed doesn’t change much during May, staying around 2 m/s. The days becoming less sunny, going from 9 sunny days in April to 8 in May.

June brings much the same weather, it remains good.

Wind

Wind speed in Zagreb in May based on historical data.
Last Year
Historical Data

The average wind speed is 2 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Zagreb is gradually decreasing during May, going from 2 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Zagreb based on historical data.
Last Year
Historical Data
Typically, there is a 61% chance of rain on an average day in May, with total rainfall of approximately 139 mm. The maximum amount of rainfall per day is around 22 mm, which is considered light rain. May is a pretty wet month with over 19 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
May is one of the rainiest months in Zagreb, here is a comparison with other months, total mm:
Zagreb wettest month is September, where a typical day has a 37% chance of precipitation and 89 mm of rainfall per day. January, on the other hand, is the driest month with a mere 16% chance of precipitation and 29 mm of rainfall per day.

How was the weather last May in Zagreb?

This is the weather in Zagreb in May 2023:
1 May
☀️
+20°C
2 May
🌧️
+17°C
3 May
🌧️
+16°C
4 May
☀️
+21°C
5 May
☀️
+24°C
6 May
☀️
+25°C
7 May
☀️
+26°C
8 May
🌧️
+16°C
9 May
☀️
+18°C
10 May
🌧️
+16°C
11 May
🌧️
+13°C
12 May
🌧️
+15°C
13 May
☁️
+17°C
14 May
🌧️
+14°C
15 May
☁️
+20°C
16 May
🌧️
+14°C
17 May
🌧️
+14°C
18 May
☁️
+15°C
19 May
☁️
+17°C
20 May
☀️
+24°C
21 May
☀️
+26°C
22 May
☀️
+27°C
23 May
☀️
+27°C
24 May
☀️
+22°C
25 May
☀️
+25°C
26 May
☀️
+26°C
27 May
☀️
+23°C
28 May
☀️
+25°C
29 May
☀️
+25°C
30 May
☀️
+24°C
31 May
🌧️
+21°C
In May 2023 Zagreb had 17 sunny days, 4 cloudy days, and 10 rainy days. The average maximum temperature was +20°C, with an absolute maximum of +27°C and a minimum of +13°C. The average humidity was 77%, with a maximum of 100% and a minimum of 43%. The average wind speed was 2 m/s, with a maximum of 9 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change over Years

This is how Zagreb climate have been changing during last 43 years period.

The climate in Zagreb in May has not changed much over the last 43 years.

The average temperature was the lowest in 1980 (+14°C) and the highest in 2022 (+18°C). The driest year was 2011 with only 471 mm of rainfall, and the wettest year was 2019 with 1707 mm.

FAQ

Frequently asked questions about the weather in Zagreb in May:

Is May a good time to visit Zagreb?

May is a really good time to go to Zagreb. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Zagreb.

Can you sunbathe in Zagreb in May?

May has mild temperatures in Zagreb. Not ideal for sunbathing, but still good for daytime outdoor activities, but plan for cool evenings. Pack a light jacket and shorts!

Is Zagreb rainy in May?

Zagreb is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Zagreb in May?

Usually, it’s not very sunny in Zagreb in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Croatia

Check out the weather for other cities in Croatia.

Monthly weather in Zagreb

Source of the data

For this page, we’ve looked at the typical weather in Zagreb, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.