Verdict: Good month
Basel Weather in May
May hits the sweet spot in Basel — highs around 19°C (66°F), ideal for a full day on foot. It's also the wet side of the calendar: rain falls on about 15 days, so build flexibility into plans. Overall, May is a solid month to visit Basel.
Average high
19°C / 66°F
Average low
9°C / 48°F
Rain days
~15
Precipitation
102 mm
What to pack for Basel in May
- Layers — t-shirts under a light jacket or sweater
- Rain gear is non-negotiable — expect rain on roughly 15 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
May against the rest of the year
Warmest in Basel: Jul (26°C / 79°F) · Coolest: Jan (6°C / 43°F) · Wettest: Dec (~16 rain days)
6°
-1°
Jan
10°
1°
Feb
12°
2°
Mar
15°
5°
Apr
19°
9°
May
24°
14°
Jun
26°
15°
Jul
26°
16°
Aug
22°
12°
Sep
17°
8°
Oct
10°
3°
Nov
7°
1°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)