When to go
The Best Time to Visit Basel
Month-by-month climate data for Basel, Switzerland — daily highs and lows, rain days, and an honest verdict for every month of the year.
May–September. Long summer days for Rhine swims; June brings Art Basel + perfect weather.
Warmest in Basel: Jul (26°C / 79°F) · Coolest: Jan (6°C / 43°F) · Wettest: Dec (~16 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
Basel climate, month by month
January
6° / -1°C
~13 rain days
Tough
February
10° / 1°C
~14 rain days
Fair
March
12° / 2°C
~12 rain days
Good
April
15° / 5°C
~12 rain days
Good
May
19° / 9°C
~15 rain days
Good
June
24° / 14°C
~14 rain days
Good
July
26° / 15°C
~13 rain days
Excellent
August
26° / 16°C
~11 rain days
Excellent
September
22° / 12°C
~11 rain days
Excellent
October
17° / 8°C
~13 rain days
Good
November
10° / 3°C
~15 rain days
Fair
December
7° / 1°C
~16 rain days
Tough
Plan around it
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