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.
Timing is the first real decision when planning Basel— it drives crowds, prices and what's actually open. Here's how the year breaks down so you can pick dates that fit the trip you're building, not just the weather.
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
Dates locked in? Start from the Basel travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.