Brunnen Weather in September

During September, Brunnen experiences moderate daytime temperatures of 17°C (63°F) and cooler nights around 8°C (46°F). September sits within the rainy season, so expect regular and often heavy rainfall.

Rainfall in Brunnen in September

As part of the rainy season, Brunnen sees around 14 days of rain in September, with an average of 179 mm (7 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.

Temperature in Brunnen in September

September in Brunnen brings moderate temperatures, with highs of 17°C (63°F) and nights around 8°C (46°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Brunnen in September

The area experiences a moderate amount of sunshine, with approximately 138 hours of sunlight expected. Even though this month is part of the rainy season, you could still see the sun every now and then.

Wind Speed in Brunnen in September

September sees wind speeds averaging 2 m/s (4 knots). You'll typically experience pleasant light breezes that move leaves slightly and feel refreshing. As an average, expect variation from very calm days to periods with more apparent air movement.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. July, August and September typically offer the best weather for Brunnen.

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

Brunnen Temperature in September

Min Temperature 8°C (46°F)  

Max Temperature 17°C (63°F)  

Chance of Rain 47%  

Precipitation 179 mm (7 in)  

Rainy days 14 days  

Humidity 78% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 138 hours *  

Percentage Sunshine 52% *  

* Data from: Altdorf, Switzerland (14 KM, 8 Miles).

What to Wear in Brunnen in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Brunnen in September

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

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

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 Brunnen's climate page.

More climate data for Brunnen

Temperature Rainfall Sunshine Humidity Wind Speed

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