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Mountain town in Bern, Switzerland

Interlaken weather by month and the best time to visit

Updated October 2026Sources
Jun–SepBest time to visit

When to go to Interlaken

Jun–Sep for hiking, paragliding and lake swimming; Dec–Mar for skiing in nearby villages. Peaks in July–Aug; spring and autumn have fewer lifts running.

Interlaken weather by month

Average daily high, rainfall and conditions.

PleasantHotRainyCool or coldBest months
-5°0°5°10°15°20°25°JFMAMJJASOND
Average highAverage lowRainfall

Monthly averages

MonthHighLowRainHumidityConditions
January4°C40°F-4°C25°F81 mm87%Cold
February5°C41°F-4°C26°F69 mm87%Cold
March8°C47°F1°C33°F89 mm87%Cold
April13°C56°F6°C42°F103 mm84%Cool
May18°C65°F10°C49°F154 mm81%Pleasant
June23°C74°F14°C58°F151 mm78%Pleasant
July25°C77°F16°C61°F148 mm77%Pleasant
August24°C76°F16°C60°F165 mm79%Rainy
September21°C69°F12°C53°F106 mm81%Pleasant
October16°C61°F8°C46°F107 mm83%Cool
November10°C49°F3°C37°F114 mm87%Cold
December5°C42°F-2°C28°F92 mm85%Cold

Best months across Switzerland

PlaceBest monthsWarmest month
ZurichMay–SepJul (24°C)
GenevaMay–SepJul (27°C)
LucerneMay–SepJul (24°C)
InterlakenJun–SepJul (25°C)
ZermattJan–Mar, Jul–SepJul (19°C)
BernMay–SepJul (24°C)
BaselMay–SepJul (25°C)
LausanneMay–SepJul (26°C)
LuganoApr–Jun, Sep–OctJul (28°C)
GrindelwaldJan–Feb, Jun–SepJul (22°C)
St. MoritzJan–Mar, Jul–SepJul (18°C)
MontreuxMay–Jun, Sep–OctJul (26°C)

Quick answers

What is the best month to visit Interlaken?

Jun–Sep. Jun–Sep for hiking, paragliding and lake swimming; Dec–Mar for skiing in nearby villages. Peaks in July–Aug; spring and autumn have fewer lifts running.

When is the rainy season in Interlaken?

Rain peaks in August with about 165 mm. Months with 150 mm or more: May–Jun, Aug.

What is the hottest month in Interlaken?

July, with average highs of 25°C (77°F).

How cold does Interlaken get?

The coolest nights are in January, averaging -4°C (25°F).

More about Interlaken

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Sources

Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 8.3°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.