Weather · Aarau, Switzerland
Aarau Weather in May
May in Aarau averages 18°C by day and 9°C at night, with about 112mm of rain. That makes it a reasonable time to visit.
Avg high
18°C
64°F
Avg low
9°C
48°F
Rainfall
112mm
#5 wettest of 12
What to pack
Layers, plus a jacket for mornings and nights. Bring a compact umbrella for the odd shower.
Timing a trip around the weather? A Local Friend in Aarau builds it around the season for you.