Porrentruy Weather in September

Porrentruy in September sees pleasant daytime temperatures of 20°C (68°F) and nighttime lows of 10°C (50°F). Rainfall is fairly high this month at around 118 mm (4.6 in), so pack a rain jacket to stay dry.

Rainfall in Porrentruy in September

You can expect rain on roughly 13 days based on historical data, averaging 118 mm (4.6 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Porrentruy in September

In September, Porrentruy gets pleasant temperatures, with highs of 20°C (68°F). Nights cool to around 10°C (50°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to around 10°C (50°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Porrentruy in September

The area experiences a moderate amount of sunshine, with approximately 162 hours of sunlight expected. This means a decent mix of sun and overcast.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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• January
• February
• March
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• May
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• August

• September
• October
• November
• December

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

Porrentruy Temperature in September

Min Temperature 10°C (50°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 42%  

Precipitation 118 mm (4.6 in)  

Rainy days 13 days  

Humidity 77% *  

Sunshine 162 hours *  

Percentage Sunshine 47% *  

* Data from: Basel, Switzerland (41 KM, 25 Miles).

What to Wear in Porrentruy 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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Porrentruy 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 Porrentruy's climate page.

More climate data for Porrentruy

Temperature Rainfall Sunshine Humidity

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