Weather in Basel in May 2025
Average weather
Average temperature in Basel in May
Going from a maximum of +27°C during the day to a minimum of +5°C during the night, the temperature in May averages around +21°C.
The average maximum temperature goes up 45% by the end of the month, compared with the beginning of the month, from +17°C to +27°C.
Is Basel warm or cold in May?
Basel 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 Basel:
Climate in Basel in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +15°C | +20°C | +23°C | ||||
| Min. temperature | ||||||
| -4°C | -1°C | +4°C | ||||
| Max. temperature | ||||||
| +29°C | +33°C | +36°C | ||||
| Rainfall | ||||||
| 87 mm | 129 mm | 121 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 68% | 71% | 70% | ||||
| Air pressure | ||||||
| 1014 HPa | 1014 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 7 | 5 | 5 | ||||
| Cloudy days | ||||||
| 5 | 4 | 4 | ||||
| Rainy days | ||||||
| 17 | 18 | 16 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May often has better weather than 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 87 mm to 129 mm. Humidity rises from 68% to 71%. The average wind speed doesn’t change much during May, staying around 2 m/s. The days becoming less sunny, going from 7 sunny days in April to 5 in May.
June brings much the same weather, it remains good.
Wind
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 Basel is gradually increasing during May, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Basel?
Climate Change over Years
The climate in Basel 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 1991 with only 753 mm of rainfall, and the wettest year was 2016 with 1490 mm.
FAQ
Is May a good time to visit Basel?
Can you sunbathe in Basel in May?
Is Basel rainy in May?
Is it sunny in Basel in May?
Other cities in Switzerland
Monthly weather in Basel
Source of the data
For this page, we’ve looked at the typical weather in Basel, 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.