Bellevue Weather in September

September in Bellevue sees daytime temperatures around 20°C (68°F) and lows of 10°C (50°F) at night. With around 122 mm (4.8 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Bellevue in September

This month experiences about 12 days of rain according to historical data, averaging 122 mm (4.8 in). When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Bellevue in September

In September, Bellevue gets pleasant temperatures, with highs of 20°C (68°F). Nights cool to around 10°C (50°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 10°C (50°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.

Sunshine in Bellevue in September

With about 183 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Average water temperature in September

With water at 20°C (68°F), conditions are good for swimming and other water activities. You won't need a wetsuit and most people find it very comfortable.

If your ideal day consists of dry skies and pleasant temperatures, June, July, August and September typically offer the best circumstances for Bellevue.

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

Bellevue Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 20°C (68°F)  

Water Temperature 20°C (68°F) *  

Chance of Rain 40%  

Precipitation 122 mm (4.8 in)  

Rainy days 12 days  

Humidity 74% *  

Sunshine 183 hours *  

Percentage Sunshine 55% *  

* Data from: Geneva, Switzerland (5 KM, 3 Miles).

What to Wear in Bellevue 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 20°C (68°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Bellevue in September

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

Swimming

6/10

Cycling

9/10

Walking

9/10

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 Bellevue's climate page.

More climate data for Bellevue

Temperature Rainfall Sunshine Humidity Water Temp

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