Best Time-of-Year
The best month at Interlaken is August, when temperatures average 9–15 °C (47–60 °F) and mid-day humidity sits around 63%. Expect rainy, mild days, with around 13 excellent days in a typical August. July, August, and October are the most reliable months, with milder temperatures.
- Terrible
- Poor
- Fair
- Good
- Excellent
- Perfect
Tap a month for its details below.
Month by Month
January
A typical January brings snowy, cold days, with around 5 climbable days. Cold takes out most of the rest.
February
A typical February brings cold days, with around 5 climbable days. Cold takes out most of the rest.
March
A typical March brings rainy, cold days, with around 8 climbable days. Cold takes out most of the rest.
April
A typical April brings rainy, cold days, with around 6 excellent days. Cold takes out most of the rest.
May
A typical May brings rainy, cool days, with around 5 excellent days. Rain takes out most of the rest.
June
A typical June brings rainy, mild days, with around 11 excellent days. Rain takes out most of the rest.
July
July is among the year's most reliable months — expect rainy, mild days, with around 13 excellent days.
August
August is the year's best month for climbing — expect rainy, mild days, with around 13 excellent days.
September
A typical September brings rainy, cool days, with around 9 excellent days.
October
October is among the year's most reliable months — expect rainy, cool days, with around 11 excellent days. Cold takes out most of the rest.
November
A typical November brings rainy, cold days, with around 5 excellent days. Cold takes out most of the rest.
December
A typical December brings snowy, cold days, with around 8 climbable days. Cold takes out most of the rest.
A Typical Year
| Month | Excellent Days | Viable Days | Off Days | Temperature | Wet Days | Mid-Day Humidity |
|---|---|---|---|---|---|---|
| January | 0 | 5 | 26 | −6 to −1 °C 21–30 °F | 13 | 71% |
| February | 1 | 5 | 22 | −5 to 1 °C 24–34 °F | 11 | 69% |
| March | 1 | 8 | 22 | −4 to 2 °C 25–36 °F | 13 | 68% |
| April | 6 | 6 | 18 | −2 to 5 °C 29–41 °F | 13 | 67% |
| May | 5 | 4 | 22 | 2–9 °C 36–48 °F | 21 | 69% |
| June | 11 | 6 | 13 | 7–15 °C 45–60 °F | 20 | 61% |
| July | 13 | 4 | 14 | 8–16 °C 47–61 °F | 16 | 61% |
| August | 13 | 8 | 10 | 9–15 °C 47–60 °F | 15 | 63% |
| September | 9 | 6 | 15 | 5–12 °C 42–53 °F | 15 | 67% |
| October | 11 | 7 | 13 | 3–9 °C 38–49 °F | 12 | 65% |
| November | 5 | 4 | 21 | −3 to 3 °C 27–37 °F | 14 | 71% |
| December | 0 | 8 | 23 | −4 to 1 °C 24–33 °F | 13 | 74% |