Nyon Weather in September

September in Nyon brings pleasant temperatures, with daytime highs of 20°C (68°F) and nights around 11°C (52°F). Quite a bit of rainfall is expected, around 124 mm (4.9 in), so pack an umbrella.

Rainfall in Nyon in September

Based on our climate data of the past 30 years, about 12 days of rain are anticipated, with 124 mm (4.9 in) on average. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Nyon in September

September in Nyon brings pleasant temperatures, with highs of 20°C (68°F) and nights around 11°C (52°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Nyon 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

At 20°C (68°F), the water is pleasant for swimming. Most people find this range ideal — cool enough to be refreshing, warm enough to stay in comfortably.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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

Nyon Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 20°C (68°F)  

Water Temperature 20°C (68°F) *  

Chance of Rain 41%  

Precipitation 124 mm (4.9 in)  

Rainy days 12 days  

Humidity 74% *  

Sunshine 183 hours *  

Percentage Sunshine 55% *  

* Data from: Geneva, Switzerland (20 KM, 12 Miles).

What to Wear in Nyon 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. The water temperature sits at about 20°C (68°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Nyon 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

6/10

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 Nyon's climate page.

More climate data for Nyon

Temperature Rainfall Sunshine Humidity Water Temp

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