Best Time-of-Year
The best month at Chamonix is July, when temperatures average 4–11 °C (38–51 °F) and mid-day humidity sits around 61%. Expect rainy, cool days, with around 14 excellent days in a typical July. July and August 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 few climbable days. Cold takes out most of the rest.
February
A typical February brings cold days, with around 2 climbable days. Cold takes out most of the rest.
March
A typical March brings snowy, cold days, with few climbable days. Cold takes out most of the rest.
April
A typical April brings snowy, cold days, with around 6 climbable days. Cold takes out most of the rest.
May
A typical May brings rainy, cold days, with around 2 excellent days. Cold takes out most of the rest.
June
A typical June brings rainy, cool days, with around 8 excellent days. Rain takes out most of the rest.
July
July is the year's best month for climbing — expect rainy, cool days, with around 14 excellent days.
August
August is among the year's most reliable months — expect rainy, cool days, with around 15 excellent days.
September
A typical September brings rainy, cool days, with around 6 excellent days. Cold takes out most of the rest.
October
A typical October brings rainy, cold days, with around 5 excellent days. Cold takes out most of the rest.
November
A typical November brings snowy, cold days, with around 3 climbable days. Cold takes out most of the rest.
December
A typical December brings snowy, cold days, with few 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 | 0 | 31 | −11 to −6 °C 13–22 °F | 14 | 74% |
| February | 0 | 2 | 26 | −9 to −4 °C 15–25 °F | 11 | 72% |
| March | 0 | 1 | 30 | −9 to −3 °C 16–26 °F | 15 | 73% |
| April | 1 | 6 | 23 | −7 to −1 °C 20–31 °F | 13 | 72% |
| May | 2 | 4 | 25 | −3 to 3 °C 26–37 °F | 18 | 76% |
| June | 8 | 5 | 17 | 2–9 °C 36–48 °F | 18 | 64% |
| July | 14 | 6 | 11 | 4–11 °C 38–51 °F | 13 | 61% |
| August | 15 | 7 | 9 | 4–11 °C 39–51 °F | 13 | 61% |
| September | 6 | 6 | 18 | 0–7 °C 33–44 °F | 14 | 71% |
| October | 5 | 7 | 19 | −1 to 4 °C 30–39 °F | 13 | 71% |
| November | 1 | 3 | 26 | −7 to −2 °C 19–28 °F | 14 | 76% |
| December | 0 | 0 | 31 | −9 to −4 °C 16–24 °F | 14 | 76% |