Basel weather

Our guide to the weather in Basel during May

18

Average high

4

UV Index

157mm

Monthly rainfall

80%

Humidity

Basel is a vibrant Swiss city with a rich cultural heritage and plenty of outdoor activities to enjoy in the warmer months. We've looked at the most up-to-date weather data for Basel, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Basel weather in May.

What's the temperature like in Basel during May?

The temperature reaches around 18℃ during the daytime in May, falling away to 8℃ at night. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.

Does it rain in Basel during May?

On average, there will be 10 rainy days during the month, amounting to 156.6mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.

Is it windy in Basel during May?

You're unlikely to experience any strong winds. Expect a light breeze that picks up slightly at times in May. With moderate air temperatures, any breeze will feel cool.

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Weather in Basel

Our month-by-month guide to the weather and climate in Basel

4.5

Basel weather in

January
6.3

Basel weather in

February
11.1

Basel weather in

March
15.4

Basel weather in

April
18.2

Basel weather in

May
22.6

Basel weather in

June
24.8

Basel weather in

July
25.0

Basel weather in

August
21.1

Basel weather in

September
16.2

Basel weather in

October
10.2

Basel weather in

November
5.9

Basel weather in

December