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Switzerland
The weather in September in Thun
Looking for great weather? September is a good time to be in Thun. The temperatures are nice, and there’s not too much rain.
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Thun, Switzerland. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Daily weather in September for Thun
Click on any day in September to get detailed info about the usual weather on that day in Thun. Check out the historical temperatures and precipitation over the past 10 years on this day.
Average temperatures
It's pleasantly warm in September in Thun with an average temperature of 19°C. Temperatures this month range from a low of 17°C to a high of 23°C. At night, you can expect temperatures between 7°C and 13°C.
Temperature records
With 28°C in 2023, Thun reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 7°C in 2020. The extreme nighttime temperatures ranged from a lowest recorded value of 2°C to a highest value of 17°C.
Rainfall amount
In September, there is an average of 74 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the South.
September weather comparison
| Thun | New York | |
|---|---|---|
| Average temperature | 19°C | 27°C |
| Max. temperature | 23°C | 31°C |
| Min. temperature | 7°C | -5°C |
| Total precipitation | 74 mm | 57 mm |
| Rainy days | 10 days | 9 days |
Start of September
The month of September starts in Thun with mild temps, averaging around 21°C during the day and nights around 12°C.
Mid September
By mid-September, daytime temps drop to around 20°C, with nights around 12°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Thun is around 18°C, while nighttime temps are about 9°C. A shower might pop up, but overall, the weather will be dry and sunny.
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Check out the climate of Thun for all months and discover the best travel time
Curious about the weather in other parts of Switzerland? Check out the climate and weather for spots like Zurich, Geneva, Valais, or explore other destinations in Switzerland.
Temperature charts
These charts show the average temperatures in September in Thun, Switzerland. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Thun
Temperature in September in Thun over the years
Precipitation charts
These charts show the average amount of precipitation in September in Thun, Switzerland. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Thun
Total precipitation in September in Thun over the years
Daily UV index in September in Thun
This chart shows the average daily UV index in September in Thun, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Thun
Have you been to Thun in September?
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Average weather in Thun by month
Click on a month below to see detailed weather info for Thun. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.