The 5 most scenic train journeys in Switzerland
Explore Switzerland's top 5 train journeys, featuring breathtaking Alpine views and engineering marvels like the Glacier Express and Bernina Express.
St. Moritz Weather in August
August in St. Moritz averages 16°C (61°F) during the day and 5°C (41°F) at night. Quite a bit of rainfall is typical this month, with around 151 mm (5.9 in) on average. An umbrella is a good idea.
Rainfall in St. Moritz in August
On average, there are about 20 days with rain during this month, averaging 151 mm (5.9 in). Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in St. Moritz in August
August in St. Moritz brings typical temperatures with highs around 16°C (61°F) and lows of 5°C (41°F). The summer season takes place during August. A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 5°C (41°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in St. Moritz in August
With about 183 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.If you're inclined towards comfortable temperatures and drier conditions, August is a good time to visit St. Moritz.
St. Moritz Temperature in August
Min Temperature
5°C (41°F)
Max Temperature
16°C (61°F)
Chance of Rain
66%
Precipitation
151 mm (5.9 in)
Rainy days
20 days
Humidity
75% *
Sunshine
183 hours *
Percentage Sunshine
57% *
St. Moritz Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in St. Moritz - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in St. Moritz typically stay consistent throughout August, with daily highs averaging around 16°C (61°F). Nights are cold, with lows typically ranging from 4°C (39°F) to 6°C (43°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 records for St. Moritz in August
Browse day-by-day weather records for St. Moritz spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
St. Moritz historical weather extremes in August
Based on 50 years of weather observations in St. Moritz between 1976 and 2026, these are the recorded extremes.
- St. Moritz recorded its highest August temperature of 30°C (86°F) on August 11, 1998.
- The lowest overnight temperature recorded in August was -8°C (18°F) (August 8, 2005).
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
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).
What to Wear in St. Moritz in August
The weather can be unpredictable in August, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in St. Moritz in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming5/10 -
Cycling5/10 -
Walking5/10 -
Camping3/10
St. Moritz 3-Day Forecast
More climate data for St. Moritz
Temperature Rainfall Sunshine Humidity
See the full St. Moritz climate overview or explore weather in Switzerland.
Popular in August
Where to go in August - average daytime high across popular destinations.
Zürich
25°C (77°F) Crans-Montana19°C (66°F) Engelberg
18°C (64°F) Nendaz18°C (64°F) Saas-Fee16°C (61°F) Davos17°C (63°F) Grindelwald17°C (63°F) Zermatt15°C (59°F) Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The 5 most scenic train journeys in Switzerland
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