Riehen Weather in September

Riehen in September sees pleasant daytime temperatures of 21°C (70°F) and nighttime lows of 10°C (50°F). Rainfall is fairly high this month at around 96 mm (3.8 in), so pack a rain jacket to stay dry.

Rainfall in Riehen in September

Based on our climate data of the past 30 years, about 12 days of rain are anticipated, with 96 mm (3.8 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Riehen in September

September is a perfect month in Riehen, with 21°C (70°F) during the day and 10°C (50°F) at night. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights cool down to 10°C (50°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 Riehen in September

The area enjoys a moderate level of sunlight, with around 162 hours. It's a good balance between sunny and cloudy days.

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 Riehen's climate page.

Riehen Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 41%  

Precipitation 96 mm (3.8 in)  

Rainy days 12 days  

Humidity 77% *  

Sunshine 162 hours *  

Percentage Sunshine 47% *  

* Data from: Basel, Switzerland (3 KM, 2 Miles).

What to Wear in Riehen in September

For Riehen in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Riehen 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

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 Switzerland, check out our Riehen's climate page.

More climate data for Riehen

Temperature Rainfall Sunshine Humidity

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