Iseltwald Weather in September

September in Iseltwald sees daytime temperatures around 14°C (57°F) and lows of 5°C (41°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.

Rainfall in Iseltwald in September

Iseltwald is in the rainy season in September, with rain on around 15 days and an average of 173 mm (6.8 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.

Temperature in Iseltwald in September

September in Iseltwald sees highs of 14°C (57°F) and lows of 5°C (41°F) overnight. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 5°C (41°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Iseltwald in September

The city usually sees around 149 hours of sunlight, indicating a moderately sunny period (despite it being part of rainy season).

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

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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 Iseltwald's climate page.

Iseltwald Temperature in September

Min Temperature 5°C (41°F)  

Max Temperature 14°C (57°F)  

Chance of Rain 49%  

Precipitation 173 mm (6.8 in)  

Rainy days 15 days  

Humidity 80% *  

Sunshine 149 hours *  

Percentage Sunshine 52% *  

* Data from: Interlaken, Switzerland (7 KM, 4 Miles).

What to Wear in Iseltwald in September

The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Iseltwald in September

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

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

3/10

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 Iseltwald's climate page.

More climate data for Iseltwald

Temperature Rainfall Sunshine Humidity

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