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Best time to visit · Switzerland
For the most comfortable weather in Interlaken, aim for September. September tops our comfort score at 82/100, with highs around 69°F (21°C) and 4.2 in (106 mm) of rain. May – July and October are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
Highs run from 40°F to 77°F across the year, and the yearly total is about 54.3 in (1379 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 40°F4°C | 41°F5°C | 47°F8°C | 56°F13°C | 65°F18°C | 74°F23°C | 77°F25°C | 76°F25°C | 69°F21°C | 61°F16°C | 50°F10°C | 42°F5°C |
| Avg low | 25°F-4°C | 26°F-4°C | 33°F1°C | 42°F6°C | 50°F10°C | 58°F14°C | 61°F16°C | 60°F16°C | 53°F12°C | 47°F8°C | 38°F3°C | 28°F-2°C |
| Rain/snow | 3.2 in81 mm | 2.7 in69 mm | 3.5 in89 mm | 4.1 in103 mm | 6.1 in154 mm | 5.9 in151 mm | 5.8 in148 mm | 6.5 in165 mm | 4.2 in106 mm | 4.2 in107 mm | 4.5 in114 mm | 3.6 in92 mm |
| Humidity | 87% | 87% | 87% | 84% | 81% | 78% | 77% | 79% | 81% | 83% | 87% | 85% |
| Cloud | 76% | 74% | 70% | 69% | 73% | 66% | 59% | 60% | 60% | 68% | 75% | 76% |
| Comfort | 40 | 43 | 52 | 65 | 72 | 69 | 72 | 68 | 82 | 74 | 52 | 41 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~1,854 m (6,083 ft) to Interlaken's ~569 m (1,867 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 40–42°F (4–5°C) and lows down to 25°F (-4°C). It's the driest season, with only about 9.5 in (242 mm) of rain or snow, 18% of the year's total. December – February are cold enough for snow. Comfort scores bottom out in December – February; the season averages 41/100.
Temperatures climb through the season, from 47°F highs in March to 65°F by May. About 13.6 in (346 mm) of rain falls across these months, 25% of the year's total. Lows bottom out around 33°F (1°C). May score well without being the very best (season average 63/100).
The warmest stretch of the year, with highs of 74–77°F (23–25°C). It's the wettest season, with about 18.3 in (464 mm) of rain, 34% of the year's total. July & August feel humid, with humidity near 77%. June & July score well without being the very best (season average 70/100).
Temperatures slide from 69°F highs in September to 50°F by November. About 12.9 in (327 mm) of rain falls across these months, 24% of the year's total. Lows bottom out around 38°F (3°C). September is among the best-scoring months (season average 69/100).
By comfort score: 1 Great, 6 Good, 2 Fair and 3 Tough. Great months: September. Tap a month for its own guide.
For the most comfortable weather in Interlaken, aim for September. September tops our comfort score at 82/100, with highs around 69°F (21°C) and 4.2 in (106 mm) of rain. May – July and October are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
August is the wettest month, averaging about 6.5 in (165 mm) of rain. February is the driest, with about 2.7 in (69 mm). The yearly total is around 54.3 in (1379 mm).
January is the coldest, with average lows of 25°F (-4°C) and highs of 40°F (4°C). The warmest is July, with average highs of 77°F (25°C).
Yes: in July & August humidity averages 77% with warm temperatures, so it feels muggy. Summer highs peak around 77°F (25°C).
On average, yes: lows fall below 32°F (0°C) in December – February, bottoming out around 25°F (-4°C) in January.
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