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SwitzerlandThe weather in September in Appenzell
It's cool in September in Appenzell with an average temperature of 13°C. Temperatures this month range from a low of 10°C to a high of 16°C. At night, you can expect temperatures between 4°C and 9°C.
Looking for sun? September isn’t a good month to be in Appenzell. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Appenzell, 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.
Temperature records
With 28°C in 2023, Appenzell reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 2°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of -2°C to a highest value of 15°C.
Precipitation and snowfall
In September, there is an average of 169 mm of precipitation, spread over 20 days. Of the total precipitation, about 18 cm falls as snow in September. The wind speed is around 4 Bft, mostly coming from the Southwest.
Daily weather in September for Appenzell
Click on any day in September to get detailed info about the usual weather on that day in Appenzell. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Appenzell | New York | |
|---|---|---|
| Average temperature | 13°C | 27°C |
| Max. temperature | 16°C | 31°C |
| Min. temperature | 4°C | -5°C |
| Total precipitation | 169 mm | 57 mm |
| Rainy days | 20 days | 9 days |
| Total snowfall | 18 cm | 0 cm |
| Snowy days | 9 days | 0 days |
Start of September
The month of September starts in Appenzell with cool temps, averaging around 15°C during the day and nights around 8°C.
Mid September
By mid-September, daytime temps stay steady at around 15°C, with nights around 8°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of September
By the end of September, the average daytime temperature in Appenzell is around 12°C, while nighttime temps are about 6°C. There’s a significant chance of many days with precipitation.
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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 Appenzell 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 Appenzell, Switzerland. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Appenzell
Temperature in September in Appenzell over the years
Precipitation charts
These charts show the average amount of precipitation in September in Appenzell, 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 Appenzell
Total precipitation in September in Appenzell over the years
Daily Snowfall in September in Appenzell
Snowfall in September in Appenzell per year
Daily UV index in September in Appenzell
This chart shows the average daily UV index in September in Appenzell, 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 Appenzell
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Average weather in Appenzell by month
Click on a month below to see detailed weather info for Appenzell. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.