When to go · Interlaken

Interlaken in September

Great month. Inside Interlaken's best window: Jun–Sep for hiking and lakes; Dec–Mar for snow.

Key facts

Verdict: Great
Temperature: 20°C (68°F)68°F (20°C) / 10°C (50°F)50°F (10°C); average high / low
Rain days: 10
Crowds: Medium; Switzerland overall
Prices: Medium; Switzerland overall

Plan around it

Verdict

GreatBest and avoid months for Interlaken

Inside Interlaken's best window: Jun–Sep for hiking and lakes; Dec–Mar for snow.

No other month rates higher than September for Interlaken in this guide.

Long-term averages

InterlakenHighs around 20 °C (68 °F), lows around 10 °C (50 °F), rain on about 10 daysHighs around 68 °F (20 °C), lows around 50 °F (10 °C), rain on about 10 days
Bernese and central Alps, Switzerland · Interlaken, Grindelwald, Lauterbrunnen, Engelbergbest weather
Skiing late December to early April ('best' in winter means snow); hiking late June to early October. Afternoon storms in July–August.

Switzerland overall: Clear, stable weather and fewer crowds; the best hiking month. Cattle come down from the pastures.

Weather, crowds and prices for any two months in Interlaken, side by side.

First month

Second month

September: Inside Interlaken's best window: Jun–Sep for hiking and lakes; Dec–Mar for snow.

January: Inside Interlaken's best window: Jun–Sep for hiking and lakes; Dec–Mar for snow.

Interlaken: figures are long-term averages from this guide, not a forecast.