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Bern in May: Weather, Average temperature and Climate

Take a look at past year’s weather for Bern in May and see if it is worth visiting.
Check flight prices to Bern on Avionero:
May

Weather in Bern in May 2025

OK Weather
Mild
🌧️
Rainy
Bern in May usually sees fair weather conditions, with an average daily high temperature of +18°C and roughly 4 sunny days. However, you should prepare for about 19 rainy days with an average precipitation of 155 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+18°C
Avg. max. temperature
-2°C
Min.
+31°C
Max.
155 mm
Total precipitation
74%
Avg. humidity
1 m/s
Avg. wind
4 ☀️
Sunny Days
5 ⛅️
Cloudy
19 🌦
Rainy
Our opinion: Bern has OK weather in May.

Average temperature in Bern in May

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

The temperature in May is +19°C on average, with a range between a maximum of +25°C during the day and a minimum of +6°C at night.

The average maximum temperature goes up 63% by the end of the month, compared with the beginning of the month, from +12°C to +24°C.

Is Bern warm or cold in May?

Bern is typically mild in May.

Maximum temperatures go up compared to the previous month from +14°C to +18°C. The minimum temperature also goes up from +4°C to +8°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 Bern:

Climate in Bern in May

Bern weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+14°C+18°C+22°C
Min. temperature
-5°C-2°C+3°C
Max. temperature
+27°C+31°C+35°C
Rainfall
103 mm155 mm158 mm
Wind
1 m/s1 m/s1 m/s
Humidity
72%74%73%
Air pressure
1014 HPa1015 HPa1016 HPa
Sunny days
544
Cloudy days
654
Rainy days
151918
Snowy days
300

May weather is still as ok as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +14°C to +18°C during the day. Prepare for more rain. Average rainfall goes from 103 mm to 155 mm. Humidity rises from 72% to 74%. The average wind speed doesn’t change much during May, staying around 1 m/s. The days becoming less sunny, going from 5 sunny days in April to 4 in May.

June brings much the same weather, it remains ok.

Wind

Wind speed in Bern 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 Bern is gradually increasing during May, going from 2 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Bern based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in May stands at 71%, leading to total precipitation of around 190 mm. The maximum amount of rainfall per day is around 24 mm, which is considered light rain. May is a pretty wet month with over 22 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
May is one of the rainiest months in Bern, here is a comparison with other months, total mm:
Bern wettest month is July, where a typical day has a 55% chance of precipitation and 164 mm of rainfall per day. February, on the other hand, is the driest month with a mere 24% chance of precipitation and 65 mm of rainfall per day.

How was the weather last May in Bern?

This is the weather in Bern in May 2023:
1 May
🌧️
+12°C
2 May
🌧️
+17°C
3 May
☀️
+18°C
4 May
☀️
+23°C
5 May
☀️
+22°C
6 May
☁️
+22°C
7 May
🌧️
+20°C
8 May
🌧️
+18°C
9 May
🌧️
+19°C
10 May
🌧️
+15°C
11 May
🌧️
+13°C
12 May
🌧️
+16°C
13 May
🌧️
+16°C
14 May
🌧️
+16°C
15 May
🌧️
+16°C
16 May
🌧️
+11°C
17 May
☁️
+12°C
18 May
☁️
+14°C
19 May
☁️
+15°C
20 May
☁️
+16°C
21 May
☁️
+23°C
22 May
🌧️
+25°C
23 May
🌧️
+22°C
24 May
🌧️
+15°C
25 May
☁️
+20°C
26 May
☁️
+23°C
27 May
☀️
+24°C
28 May
☀️
+24°C
29 May
☀️
+24°C
30 May
☀️
+24°C
31 May
☀️
+24°C
In May 2023 Bern had 8 sunny days, 8 cloudy days, and 15 rainy days. The average maximum temperature was +19°C, with an absolute maximum of +25°C and a minimum of +11°C. The average humidity was 79%, with a maximum of 100% and a minimum of 37%. The average wind speed was 2 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change over Years

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

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

The average temperature was the lowest in 1980 (+12°C) and the highest in 2022 (+17°C). The driest year was 2003 with only 973 mm of rainfall, and the wettest year was 2002 with 1659 mm.

FAQ

Frequently asked questions about the weather in Bern in May:

Is May a good time to visit Bern?

It’s always a good time to visit Bern, but the weather is changeable in May, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in Bern in May?

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

Is Bern rainy in May?

Bern 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 Bern in May?

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

Other cities in Switzerland

Check out the weather for other cities in Switzerland.

Monthly weather in Bern

Source of the data

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