Measured, not vibes
Best Time to Visit Interlaken
By measured weather comfort, the top months for Interlaken are August, September, July — and RouteVerdict's editorial pick, which also weighs crowds and prices, is January, February, March, June, July, August, September, December. The table below is computed from ERA5 reanalysis data for 2020–2024, measured at Interlaken (570 m elevation).
Month by month
Interlaken weather and comfort, 2020–2024
| Month | Avg high | Wet days | Comfort | Season |
|---|---|---|---|---|
| January | 6.8°C / 44°F | 12.7 | 15 | |
| February | 10.2°C / 50°F | 11.3 | 28 | |
| March | 11.7°C / 53°F | 11.2 | 35 | |
| April | 14.2°C / 58°F | 12.5 | 47 | |
| May | 17.9°C / 64°F | 16.7 | 57 | Shoulder |
| June | 22.8°C / 73°F | 15 | 70 | |
| July | 24.4°C / 76°F | 14.2 | 71 | Best |
| August | 24.5°C / 76°F | 11.7 | 76 | Best |
| September | 20.8°C / 69°F | 12 | 74 | Best |
| October | 17.7°C / 64°F | 11.2 | 65 | Shoulder |
| November | 11.4°C / 53°F | 11.7 | 33 | |
| December | 8°C / 46°F | 13.7 | 18 |
Comfort is RouteVerdict's 0–100 score: 100·exp(−(high−23)²/162) × (1 − min(0.35, wet days × 0.02)). The full method is on the methodology page. Weather data by Open-Meteo.com (ERA5, CC BY 4.0), 2020–2024 normals. Wet day = ≥1 mm precipitation.
FAQ
Interlaken timing questions
What is the best month to visit Interlaken?
By measured weather comfort (ERA5 2020–2024), the top months are August, September, and July, with August scoring highest. RouteVerdict's editorial pick is January, February, March, June, July, August, September, and December, which also weighs crowds, prices, and events.
What is the hottest month in Interlaken?
August, with an average daily high of 24.5°C (76°F).
What is the rainiest month in Interlaken?
May, averaging 16.7 days with at least 1 mm of precipitation.
When is shoulder season in Interlaken?
October and May — the best-scoring months outside both the measured top three and RouteVerdict's editorial peak-season pick.