Saas-Grund Weather in September
September in Saas-Grund typically sees daytime highs of 12°C (54°F) and nighttime lows of 3°C (37°F). September falls within the rainy season, so heavy rainfall is to be expected.
Rainfall in Saas-Grund in September
Saas-Grund is in the rainy season in September, with rain on around 16 days and an average of 178 mm (7 in). Rainfall this month is frequent and tends to be fairly heavy when it does fall. Packing waterproofs is a good idea.
Temperature in Saas-Grund in September
September in Saas-Grund brings moderate temperatures, with highs of 12°C (54°F) and nights around 3°C (37°F). Conditions are often most pleasant around the middle of the day. With lows around 3°C (37°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Saas-Grund in September
You can expect a moderate amount of sunlight, with approximately 166 hours. Even though this month is part of the wet season, you can still see the sun occasionally.For more travel ideas, our weather planner can help you explore destinations around the world.
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 Saas-Grund's climate page.
Saas-Grund Temperature in September
Min Temperature
3°C (37°F)
Max Temperature
12°C (54°F)
Chance of Rain
52%
Precipitation
178 mm (7 in)
Rainy days
16 days
Humidity
70% *
Sunshine
166 hours *
Percentage Sunshine
69% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Saas-Grund typically drop from around 20°C (68°F) at the start of September to approximately 16°C (61°F) by the end. Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in September
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 September
Historical weather for Saas-Grund in September
Browse day-by-day weather records for Saas-Grund spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Saas-Grund historical weather extremes in September
Based on 43 years of weather observations (1982-2025), these are the most extreme conditions recorded in Saas-Grund.
- Saas-Grund recorded its highest September temperature of 30°C (86°F) on September 6, 1988.
- On September 26, 2020, Saas-Grund saw its coldest September day with temperatures maxing out at 5°C (41°F).
- The coldest night in September in Saas-Grund was on September 29, 1995, with a minimum of -12°C (10°F).
- Peak precipitation in September occurred on September 27, 1991, when 34 mm (1.3 in) of precipitation was measured.
Best Places in Switzerland in September
Find out more about the weather in Switzerland and which places have the best travel conditions in this month. See all of Switzerland in September →
perfect weather
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tolerable
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What to Wear in Saas-Grund in September
The weather can swing between comfortable and chilly in September, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. 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 Saas-Grund in September
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 Saas-Grund's climate page.
Temperature Rainfall Sunshine Humidity
See the full Saas-Grund climate overview or explore weather in Switzerland.
