Aarau Weather in May

In Aarau, May brings pleasant daytime temperatures around 19°C (66°F), with nights cooling to 9°C (48°F). Expect quite a bit of rainfall this month.

Rainfall in Aarau in May

Historically, the month has about 18 days of rain, averaging 155 mm (6.1 in) in total. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Aarau in May

Daytime temperatures in Aarau reach 19°C (66°F) in May, dropping to 9°C (48°F) at night. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. Nights fall to 9°C (48°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in Aarau in May

The month brings about 188 hours of sunlight, offering a comfortable mix of sun and overcast.

Should you favor a climate that's both dry and comfortably warm, June, July, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.