When to go · Aarau
Aarau in September
Great month. Inside Aarau's best window: May–Sep.
Key facts
- Verdict
- Great
- Temperature
- 20°C (68°F)68°F (20°C) / 13°C (55°F)55°F (13°C)
- average high / low
- Rain days
- 8
- Crowds
- Medium
- Switzerland overall
- Prices
- Medium
- Switzerland overall
Verdict
Inside Aarau's best window: May–Sep.
Is another month better than September?
No other month rates higher than September for Aarau in this guide.
Weather in September
- AarauHighs around 20 °C (68 °F), lows around 13 °C (55 °F), rain on about 8 daysHighs around 68 °F (20 °C), lows around 55 °F (13 °C), rain on about 8 days
Crowds and prices
- Crowds · Switzerland overall
- Medium
- Prices · Switzerland overall
- Medium
Switzerland overall: Clear, stable weather and fewer crowds; the best hiking month. Cattle come down from the pastures.
Compare two months
Weather, crowds and prices for any two months in Aarau, side by side.
Verdict
Sep: Great
May: Great
Daytime high
Sep: 20 °C (68 °F)68 °F (20 °C)
May: 19 °C (66 °F)66 °F (19 °C)
Night low
Sep: 13 °C (55 °F)55 °F (13 °C)
May: 11 °C (52 °F)52 °F (11 °C)
Rain days
Sep: 8 (better)
May: 9
Crowds
Sep: Medium
May: Low
Prices
Sep: Medium
May: Low
Festivals listed
Sep: 0
May: 0
September: Inside Aarau's best window: May–Sep.
May: Inside Aarau's best window: May–Sep.
Aarau: figures are long-term averages from this guide, not a forecast.
What to pack
Nothing unusual for the weather this month.