Siviez Weather in August
Siviez in August sees moderate daytime temperatures of 18°C (64°F) and nighttime lows of 7°C (45°F). Rainfall is fairly high this month at around 140 mm (5.5 in), so pack a rain jacket to stay dry.
Rainfall in Siviez in August
Based on our climate data of the past 30 years, about 17 days of rain are anticipated, with 140 mm (5.5 in) on average. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Siviez in August
Temperatures in Siviez in August top out at 18°C (64°F) and drop to 7°C (45°F) overnight. During August, the summer season is in full swing. The difference between afternoon and evening temperatures is usually noticeable. Nights drop to 7°C (45°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Siviez in August
Expect sunny days throughout the month, with an estimated 248 hours of sunshine. This makes it a pleasant time to visit Siviez.
Wind Speed in Siviez 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.If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.
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 Siviez's climate page.
Siviez Temperature in August
Min Temperature
7°C (45°F)
Max Temperature
18°C (64°F)
Chance of Rain
56%
Precipitation
140 mm (5.5 in)
Rainy days
17 days
Humidity
67% *
Windspeed
2 m/s (4 knots) *
Sunshine
248 hours *
Percentage Sunshine
65% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Siviez typically drop from around 25°C (77°F) at the start of August to approximately 21°C (70°F) by the end. Nights are cool, with lows typically ranging from 10°C (50°F) to 13°C (55°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 Siviez in August
Browse day-by-day weather records for Siviez spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Siviez historical weather extremes in August
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Siviez.
- Siviez recorded its highest August temperature of 37°C (99°F) on August 24, 2023.
- On August 9, 2007, Siviez saw its coldest August day with temperatures maxing out at 9°C (48°F).
- The coldest night in August in Siviez was on August 31, 1995, with a minimum of -11°C (12°F).
- Peak precipitation in August occurred on August 9, 1994, when 38 mm (1.5 in) of precipitation was measured.
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 Siviez 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Siviez 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 Siviez's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Siviez climate overview or explore weather in Switzerland.
