Siviez
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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.

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% *
* Data from: Sion, Switzerland (9 KM, 5 Miles).

Siviez Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Siviez - and find the best time to visit.

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 records 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 50 years of weather observations (1976-2026), 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

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 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.

  • Cycling
    5/10
  • Walking
    5/10
  • Camping
    3/10
  • Outdoor sports
    9/10

Siviez 3-Day Forecast

More climate data for Siviez

Popular in August

Where to go in August - average daytime high across popular destinations.

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.