Jaun Weather in September

September in Jaun brings moderate temperatures around 17°C (63°F) during the day, dropping to 7°C (45°F) at night, with quite a bit of rainfall expected, averaging around 139 mm (5.5 in) for the month.

Rainfall in Jaun in September

You can expect rain on around 14 days based on historical patterns, with 139 mm (5.5 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Jaun in September

In September, expect moderate temperatures in Jaun, with highs of 17°C (63°F) and lows of 7°C (45°F) at night. Conditions are often most pleasant around the middle of the day. With overnight lows of 7°C (45°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Jaun in September

You can expect a moderate amount of sunlight, with approximately 178 hours. This means a pleasant mix of sun and overcast.

For Jaun itself, August generally stands out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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• January
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For a detailed overview over the year and the best time to visit Switzerland, check out our Jaun's climate page.

Jaun Temperature in September

Min Temperature 7°C (45°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 47%  

Precipitation 139 mm (5.5 in)  

Rainy days 14 days  

Humidity 78% *  

Sunshine 178 hours *  

Percentage Sunshine 51% *  

* Data from: Payerne, Switzerland (33 KM, 20 Miles).

What to Wear in Jaun in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. 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 Jaun in September

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

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Switzerland, check out our Jaun's climate page.

More climate data for Jaun

Temperature Rainfall Sunshine Humidity

See the full Jaun climate overview or explore weather in Switzerland.