Alt Sankt Johann weather in September (St.Gallen Canton, Switzerland)

Interested in knowing the climate of Alt Sankt Johann in September? Explore our page to find a thorough overview of this month's weather conditions.

Temperatures

In September, Alt Sankt Johann usually has moderate temperatures and heavy rainfall. Throughout the day, temperatures can rise to about 17°C. At night, they generally drop to 8°C.

Precipitation

Alt Sankt Johann in September falls under the rainy season with heavy rainfall, averaging around 185 mm for the month. Expect around 14 days of rain based on historical data.

Average sunshine

The month brings about 157 hours of sunlight, offering a comfortable mix of sun and shade.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Alt Sankt Johann. July typically offers the most optimal weather. In contrast, January, February, March, April, May, June, August, September, October, November and December tend to have less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Alt Sankt Johann climate page with graphs.

 

Alt Sankt Johann, monthly averages in September

Min Temperature 8°C  

Max Temperature 17°C  

Chance of Rain 46%  

Precipitation 185 mm  

Rainy days 14 days  

Humidity 78% *  

Windspeed 22 km/h *  

Sunshine 157 hours *  

Percentage Sunshine *  

* Data from: Säntis (the highest mountain in the Alpstein massif), Switzerland (5 KM, 3 Miles).

Where to go in Switzerland in September

Find out more about the weather in Switzerland and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

For visitors traveling to Alt Sankt Johann, we recommend wearing layers. So maybe a skirt, t-shirt, shorts for during the day and jeans and a warm jacket for some days and evenings. Bring a rain jacket in case it rains during your stay. Plan on layering your clothes.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

5/10

Walking

5/10

Camping

3/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Alt Sankt Johann.

Our site offers climate and forecast data for every country in the world. Are you going to Switzerland? On this website you can find historical weather averages for many cities in Switzerland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.