Arosa Weather in August
Thinking of visiting Arosa in August? Expect moderate temperatures reaching 17°C (63°F) during the day, dropping to 6°C (43°F) at night, and note that quite a bit of rainfall is likely.
Rainfall in Arosa in August
Typically, about 20 days will experience rainfall, with an average of 173 mm (6.8 in) for the month. 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 Arosa in August
In August, Arosa sees moderate temperatures, with highs of 17°C (63°F). Nights drop to around 6°C (43°F). This month falls in the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 6°C (43°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Arosa in August
The city usually sees around 180 hours of sunlight, indicating a moderately sunny period.
Wind Speed in Arosa in August
Average wind conditions reach 2 m/s (4 knots) in August. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.Should you favor a climate that's both dry and comfortably warm, July typically offers 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.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Arosa's climate page.
Arosa Temperature in August
Min Temperature
6°C (43°F)
Max Temperature
17°C (63°F)
Chance of Rain
65%
Precipitation
173 mm (6.8 in)
Rainy days
20 days
Humidity
75% *
Windspeed
2 m/s (4 knots) *
Sunshine
180 hours *
Percentage Sunshine
54% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Arosa typically stay consistent throughout August, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 10°C (50°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for Arosa in August
Browse day-by-day weather records for Arosa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Arosa historical weather extremes in August
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Arosa.
- Arosa recorded its highest August temperature of 31°C (88°F) on August 8, 1992.
- The coldest August day was on August 11, 2017, with a maximum of 6°C (43°F).
- The lowest overnight temperature recorded in August was -5°C (23°F) (August 29, 1989).
Best Places in Switzerland in August
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Arosa in August
Comfortable temperatures call for an easy wardrobe in August. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Arosa in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Switzerland, check out our Arosa's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Arosa climate overview or explore weather in Switzerland.
