Zermatt Weather in May
What's the weather like in Zermatt (Valais) in May 2025?
The climate in Zermatt during May can be summarized as cold and wet.
May is in the spring in Zermatt and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cold 3°C (38°F), whilst at night -3°C (27°F) is normal.
| Daytime temperature | 3.1°C 37.5°F |
|---|---|
| Nightly temperature | -3.1°C 26.5°F |
| Average temperature | 0°C 32°F |
| Daily sunshine | 6.2 hrs |
| Avg rainfall | 150 mm 5.9 ins |
| Rainy days | 21 days |
| Sea temperature | 15.9°C 60.6°F |
| Humidity | 79% |
| Windspeed | 16.6kph 10 mph |
On average May is the 4th wettest month of the year in Zermatt with around 150mm 5.9 inches of rain making it a wet time to visit. This rainfall is typically spread over 21 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.2 hours of sunshine per day.
May temperatures in Zermatt
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Zermatt in May 2025.
Other monthly averages
Zermatt weather stats
| Hottest month: | July | 9°C 48.2°F |
|---|---|---|
| Driest month: | February | 117mm 4.6ins |
| Sunniest month: | July | 8hrs |
| Coldest month: | January | -5.6°C 21.9°F |
| Wettest month: | August | 173mm 6.8ins |
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