Klosters Weather in September
September in Klosters averages 13°C (55°F) during the day and 3°C (37°F) at night. Quite a bit of rainfall is typical this month, with around 135 mm (5.3 in) on average. An umbrella is a good idea.
Rainfall in Klosters in September
Past climate data indicates that roughly 15 days will see rain, totalling around 135 mm (5.3 in) for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Klosters in September
Daytime temperatures in Klosters reach 13°C (55°F) in September, dropping to 3°C (37°F) at night. Conditions are often most pleasant around the middle of the day. Nights drop to 3°C (37°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Klosters in September
The month brings about 162 hours of sunlight, offering a comfortable mix of sun and overcast.
Wind Speed in Klosters in September
Wind speeds average 2 m/s (4 knots) during September. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for Klosters.
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 Klosters's climate page.
Klosters Temperature in September
Min Temperature
3°C (37°F)
Max Temperature
13°C (55°F)
Chance of Rain
51%
Precipitation
135 mm (5.3 in)
Rainy days
15 days
Humidity
75% *
Windspeed
2 m/s (4 knots) *
Sunshine
162 hours *
Percentage Sunshine
53% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Klosters typically stay consistent throughout September, with daily highs averaging around 13°C (55°F). Nights are cold, with lows typically ranging from 3°C (37°F) to 6°C (43°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 Klosters in September
Browse day-by-day weather records for Klosters spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Klosters historical weather extremes in September
According to our 49 years of weather records for Klosters, the following extremes were recorded between 1976 and 2025.
- The warmest day in September was on September 17, 1987, with a maximum of 31°C (88°F).
- Klosters registered its coldest September night on September 28, 1989, with temperatures dropping to -7°C (19°F).
- The wettest September day on record brought 62 mm (2.4 in) of precipitation to Klosters (September 25, 2020).
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
pleasant
tolerable
unpleasant
poor
What to Wear in Klosters in September
Pack for changing conditions in Klosters in September. Bring a mix of short and long sleeves, a warm layer like a hoodie or light jacket, and comfortable pants. The key is being able to add or remove layers as the days goes by. Prepare for significant rainfall with proper waterproof clothing and shoes. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.What To Do in Klosters 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 Klosters's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full Klosters climate overview or explore weather in Switzerland.
