Davos

Grisons Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Grisons, Switzerland in August.

Planning a journey to Grisons, Switzerland this August and curious over the weather conditions to await? Your essential details are found on this page, answering your query:

What to Expect in Grisons in August

Grisons, Switzerland is a region in Switzerland. August in Grisons generally has temperatures that range from mild to pleasant, with precipitation levels ranging from high to heavy. During August, summer is in full swing.

Temperatures

During the day temperatures vary from mild in Sta Maria Val Müstair at 15°C (59°F) to pleasant in Verdabbio at 21°C (70°F). At night it cools down to 11°C (52°F) in Verdabbio and 5°C (41°F) in Sta Maria Val Müstair.

To learn more about the conditions in specific areas of Grisons, Switzerland, check out the map below.

Precipitation

In August, precipitation varies across different areas. From high rainfall in Sta Maria Val Müstair with an average of 103 mm (4.1 in) to heavy rainfall in Sedrun with 225 mm (8.9 in).

Average sunshine

Sunshine is moderately available across various locations. In Davos, you can expect around 180 hours of sunlight in August, which gives a pleasant combination of sun and shade. For those who want maximum sunshine, our weather planner can point you toward the sunniest places on Earth.

Explore Grisons by month

Best Places to Visit in Grisons in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Grisons.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Grisons

What is the weather like in August for some of the most popular destinations in Grisons, Switzerland?

Temperature range in Grisons (August)

Precipitation variation in Grisons (August)

Davos

In August Davos generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 6°C (43°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
17°C (63°F)
17°C (63°F)
13°C (55°F)
Min temperature
6°C (43°F)
6°C (43°F)
2°C (36°F)
Monthly sun hours
188 hours
180 hours
162 hours
Monthly rainfall
171 mm (6.7 in)
172 mm (6.8 in)
129 mm (5.1 in)
Monthly rainy days
20 days
20 days
15 days
Weather conditions

Arosa

In August Arosa generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 6°C (43°F) and heavy monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
18°C (64°F)
17°C (63°F)
13°C (55°F)
Min temperature
6°C (43°F)
6°C (43°F)
3°C (37°F)
Monthly sun hours
188 hours
180 hours
162 hours
Monthly rainfall
168 mm (6.6 in)
173 mm (6.8 in)
131 mm (5.2 in)
Monthly rainy days
19 days
20 days
15 days
Weather conditions

St. Moritz

In August St. Moritz generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 5°C (41°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
16°C (61°F)
16°C (61°F)
11°C (52°F)
Min temperature
5°C (41°F)
5°C (41°F)
2°C (36°F)
Monthly sun hours
200 hours
183 hours
156 hours
Monthly rainfall
152 mm (6 in)
151 mm (5.9 in)
118 mm (4.6 in)
Monthly rainy days
19 days
20 days
15 days
Weather conditions

Samnaun

In August Samnaun generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 5°C (41°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

July
August
September
Max temperature
16°C (61°F)
16°C (61°F)
12°C (54°F)
Min temperature
5°C (41°F)
5°C (41°F)
2°C (36°F)
Monthly rainfall
166 mm (6.5 in)
157 mm (6.2 in)
119 mm (4.7 in)
Monthly rainy days
20 days
20 days
15 days
Weather conditions

Disentis

In August Disentis generally has moderate temperatures with maximum daytime temperatures around 17°C (63°F), minimum nighttime temperatures around 7°C (45°F) and heavy monthly rainfall. So on average the conditions are poor that month.

July
August
September
Max temperature
17°C (63°F)
17°C (63°F)
13°C (55°F)
Min temperature
7°C (45°F)
7°C (45°F)
3°C (37°F)
Monthly sun hours
196 hours
184 hours
156 hours
Monthly rainfall
209 mm (8.2 in)
223 mm (8.8 in)
168 mm (6.6 in)
Monthly rainy days
19 days
20 days
16 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Grisons, in Switzerland.

In our records: Switzerland August extremes

Notable August records observed across cities in Switzerland in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest August day in Switzerland reached 41°C (106°F) in Veysonnaz on August 21, 2023.

Popular cities in August

Day & night temperatures, rainfall and average weather in Grisons in August.

City Weather Day temp Night temp Rainfall
Davos 17°C (63°F) 6°C (43°F) 172 mm (6.8 in)
Arosa 17°C (63°F) 6°C (43°F) 173 mm (6.8 in)
St. Moritz 16°C (61°F) 5°C (41°F) 151 mm (5.9 in)
Samnaun 16°C (61°F) 5°C (41°F) 157 mm (6.2 in)
Disentis 17°C (63°F) 7°C (45°F) 223 mm (8.8 in)
Lenzerheide 17°C (63°F) 6°C (43°F) 168 mm (6.6 in)

Grisons weather in August: frequently asked questions

What is the weather like in Grisons, Switzerland in August?

In August, Grisons, Switzerland generally has unpleasant weather conditions. Davos sees daytime temperatures near 17°C (63°F), with nights cooling to roughly 6°C (43°F).

What is the average temperature in Grisons, Switzerland in August?

Davos averages a daytime maximum of 17°C (63°F) in August, with overnight lows close to 6°C (43°F).

Does Grisons, Switzerland get a lot of rain in August?

Yes. August brings heavy rainfall to Grisons, Switzerland, with Davos averaging around 172 mm (6.8 in). Expect frequent showers and pack accordingly.

Is August a Good Time to Visit Grisons, Switzerland?

In our view, August is one of the best times to travel to Grisons, Switzerland, however the weather can often be unpleasant in Davos.

On average, the best time to visit Grisons, Switzerland is in July and August with generally unpleasant weather in Davos.

Interested in more climate information?

We have much more information about the climate in Grisons.

Weather and climate has detailed information for every country in the world. Are you going to Switzerland? Get detailed historical weather averages for many cities in Switzerland.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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