Temperature
Cool by day, cold at night.
62°Ftypical Aug high
Arosa is most comfortable in spring and winter. Summers are cool and winters are cold. Humidity is usually low.

Cool by day, cold at night.
Recurring showers across the month.
Cloudier spells limit sunshine.
Humidity is rarely noticeable.
Mostly cloudy skies.
Want a side-by-side climate view? Compare Arosa with Oslo.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 11, 2026
Data & methodology