Best Time to Visit Aarau, Aargau, Switzerland
Month-by-month climate guide for planning a trip to Aarau.
Aarau does not have a month that clearly fits our sunny profiles. Its practical travel window centres on its warmest (July, 18.6°C / 65.5°F) and driest (March, 81 mm / 3.2 in) months. The drier stretch runs through September–October and January–May; the wetter half falls in June–August and November–December. At the city itself, monthly average temperatures range from 0.6°C / 33.1°F in January to 18.6°C / 65.5°F in July, with rainfall from 81 mm / 3.2 in (March) to 124 mm / 4.9 in (June). These are point-value climate normals sampled at Aarau, Aargau, Switzerland's coordinates — usually more actionable for travellers than the country-wide average. Aarau's climate is broadly seasonal. The full month-by-month table below lets you match your travel window against our five weather profiles.
Recommended months
| Month | Temp | Rain | Feels like |
|---|---|---|---|
| August | 18°C64.4°F | 108 mm4.3″ | — |
| September | 14.3°C57.7°F | 90 mm3.5″ | — |
| July | 18.6°C65.5°F | 113 mm4.4″ | — |
No month at Aarau matches our sunny profiles. The three above are the driest-and-warmest fallback.
Frequently asked questions
When is the best time to visit Aarau?
Aarau doesn't have a month that clearly matches our sunny profiles. The practical travel window centres on March (driest, ~81 mm / 3.2 in) and July (warmest, 18.6°C / 65.5°F). Because these are point values at the city, they can differ substantially from Switzerland's national average.
When is the rainy season in Aarau?
The rainy season at Aarau, Aargau runs through June–August and November–December, when monthly rainfall exceeds the annual median of about 107 mm / 4.2 in. The wettest single month is June (124 mm / 4.9 in).
What is the driest month in Aarau?
The driest month in Aarau is March, averaging about 81 mm / 3.2 in of rainfall. Temperature that month averages 5.3°C / 41.5°F.
What months should I avoid visiting Aarau?
The least comfortable months for travel to Aarau — based on point-value climate at the city — are January, February, June, July, August, November, December. These are the wettest or coolest months at this location. Rainfall peaks at 124 mm / 4.9 in in June, and the coldest month averages 0.6°C / 33.1°F.
Is Aarau climate different from Switzerland overall?
Yes, usually. Our Aarau figures are point-value climate normals sampled at the city itself, while our Switzerland figures are area-weighted averages across the whole country. The two can diverge substantially in geographically diverse or elevation-varied countries. The month-by-month table below reflects Aarau specifically — usually the more actionable data for a traveller planning to spend time in the city.