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Brno in May: Weather, Average temperature and Climate

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

Weather in Brno in May 2025

Good Weather
Mild
🌧️
Rainy
Planning a trip to Brno in May? You are in luck! The weather is generally good, with an average maximum temperature of +20°C and approximately 7 sunny days. Just be prepared for some rain, as there are usually around 17 rainy days and 70 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+20°C
Avg. max. temperature
0°C
Min.
+33°C
Max.
70 mm
Total precipitation
70%
Avg. humidity
3 m/s
Avg. wind
7 ☀️
Sunny Days
5 ⛅️
Cloudy
17 🌦
Rainy
Our opinion: Brno has good weather in May.

Average temperature in Brno in May

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

Going from a maximum of +26°C during the day to a minimum of +3°C during the night, the temperature in May averages around +19°C.

The average maximum temperature goes up 22% by the end of the month, compared with the beginning of the month, from +19°C to +24°C.

Is Brno warm or cold in May?

Brno is typically mild in May.

Maximum temperatures go up compared to the previous month from +15°C to +20°C. The minimum temperature also goes up from +5°C to +10°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 Brno:

Climate in Brno in May

Brno weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+15°C+20°C+23°C
Min. temperature
-5°C0°C+4°C
Max. temperature
+30°C+33°C+35°C
Rainfall
45 mm70 mm84 mm
Wind
3 m/s3 m/s2 m/s
Humidity
70%70%71%
Air pressure
1013 HPa1014 HPa1014 HPa
Sunny days
776
Cloudy days
655
Rainy days
151717
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 +15°C to +20°C during the day. Prepare for more rain. Average rainfall goes from 45 mm to 70 mm. Humidity levels don’t change as the month goes on, averaging around 70%. The average wind speed doesn’t change much during May, staying around 3 m/s. The amount of sunny days stay about the same, averaging 7 sunny days during the month.

June brings much the same weather, it remains good.

Wind

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

The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Brno is gradually decreasing during May, going from 4 m/s to 3 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Brno based on historical data.
Last Year
Historical Data
Typically, there is a 39% chance of rain on an average day in May, with total rainfall of approximately 93 mm. The maximum amount of rainfall per day is around 19 mm, which is considered light rain. May is a pretty wet month with over 12 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Brno wettest month is July, where a typical day has a 55% chance of precipitation and 85 mm of rainfall per day. January, on the other hand, is the driest month with a mere 19% chance of precipitation and 17 mm of rainfall per day.

How was the weather last May in Brno?

This is the weather in Brno in May 2023:
1 May
☀️
+19°C
2 May
☀️
+17°C
3 May
☀️
+17°C
4 May
☀️
+19°C
5 May
☀️
+21°C
6 May
☀️
+19°C
7 May
☁️
+17°C
8 May
☀️
+16°C
9 May
☀️
+17°C
10 May
☀️
+18°C
11 May
☀️
+19°C
12 May
☀️
+16°C
13 May
☀️
+16°C
14 May
🌧️
+16°C
15 May
🌧️
+17°C
16 May
🌧️
+18°C
17 May
🌧️
+10°C
18 May
☁️
+15°C
19 May
☁️
+17°C
20 May
☀️
+22°C
21 May
☀️
+26°C
22 May
☀️
+24°C
23 May
☀️
+24°C
24 May
☁️
+18°C
25 May
☀️
+22°C
26 May
☀️
+21°C
27 May
☀️
+21°C
28 May
☀️
+23°C
29 May
☀️
+24°C
30 May
☀️
+22°C
31 May
☀️
+24°C
In May 2023 Brno had 23 sunny days, 4 cloudy days, and 4 rainy days. The average maximum temperature was +19°C, with an absolute maximum of +26°C and a minimum of +10°C. The average humidity was 71%, with a maximum of 100% and a minimum of 38%. The average wind speed was 3 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 Brno climate have been changing during last 43 years period.

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

The average temperature was the lowest in 1996 (+11°C) and the highest in 2023 (+16°C). The driest year was 1983 with only 359 mm of rainfall, and the wettest year was 2021 with 1029 mm.

FAQ

Frequently asked questions about the weather in Brno in May:

Is May a good time to visit Brno?

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

Can you sunbathe in Brno in May?

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

Is Brno rainy in May?

Brno 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 Brno in May?

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

Other cities in Czech Republic

Check out the weather for other cities in Czech Republic.

Monthly weather in Brno

Source of the data

For this page, we’ve looked at the typical weather in Brno, 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.