Lake Geneva Weather in September

During September, Lake Geneva experiences high daytime temperatures of 23°C (73°F) and cooler nights around 11°C (52°F). Expect quite a bit of rainfall. Around 85 mm (3.3 in) is typical.

Rainfall in Lake Geneva in September

Looking at the last 30 years, the data shows about 10 days with rain, averaging 85 mm (3.3 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Lake Geneva in September

The perfect temperature in Lake Geneva in September makes it a solid month to visit, with 23°C (73°F) during the day and 11°C (52°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Lake Geneva in September

The days are predominantly sunny, with an estimated total of around 216 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Lake Geneva.

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 the United States of America, check out our Lake Geneva's climate page.

Lake Geneva Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 23°C (73°F)  

Chance of Rain 33%  

Precipitation 85 mm (3.3 in)  

Rainy days 10 days  

Humidity 75% *  

Sunshine 216 hours *  

Percentage Sunshine 57% *  

* Data from: Milwaukee, the United States of America (64 KM, 40 Miles).

What to Wear in Lake Geneva 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. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Lake Geneva in September

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

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

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 the United States of America, check out our Lake Geneva's climate page.

More climate data for Lake Geneva

Temperature Rainfall Sunshine Humidity

See the full Lake Geneva climate overview or explore weather in the United States of America.