Chamonix at a glance
- Best time
- Jun – Sep
- Warmest month
- Aug · 22°
- Sunshine a year
- 2,060 h
- Rain a year
- 1,513 mm
- Climate
- Mountain
- Time zone
- UTC+1 / UTC+2
- Elevation
- 1,060 m
Climate in Chamonix
Chamonix has a mountain climate: summers are fresh, winters cold and snowy. August is the warmest month with average highs of 22 °C, while January is the coolest at 1 °C. With around 2,060 hours of sunshine a year, Chamonix is moderately sunny; July is the sunniest month with 7.5 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Fair
Best time to visit: June – September
Best for skiing: December – March
What is the weather like in Chamonix in October?
In October, Chamonix is cool: daytime highs average 14 °C, and nights cool down to about 4 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 112 mm in total. All in all, October is a so-so month for a holiday in Chamonix.
More details for October
- Daylight
- 11 h 1 min07:48 – 18:49
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or more
- Wind
- 8 km/haverage daily peak
- Cloud cover
- 64 %on average
- Hot days
- 0 days30 °C or more
- Snow days
- 1 day1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Paris
How the score comes together
- Temperatureweight 50 %78 %
- Sunshineweight 20 %33 %
- Few rainy daysweight 30 %39 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Mountain air”.
What to pack in October
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Sunshine hours in Chamonix
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 5.0 of 11.0 hours of daylight in Chamonix, 45 % of the day.
Sunshine hours count the time with bright, direct sunshine (WMO definition, estimated from model data); daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Chamonix
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 3 · moderateAround midday seek shade; use sunscreen, a hat and sunglasses.
The sun is strongest in June (UV 9).
Minutes until sunburn in October
- Very fair skin
- about 45 min
- Fair skin
- about 55 min
- Light brown skin
- about 75 min
- Olive skin
- about 100 min
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Chamonix: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Chamonix has about 13 rainy days with 112 mm of rain in total.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 14 | 1° | −8° | 3.9 h | 13 | 119 |
| FebruaryFeb | 21 | 3° | −6° | 5.0 h | 11 | 97 |
| MarchMar | 24 | 7° | −3° | 5.9 h | 13 | 109 |
| AprilApr | 41 | 10° | 1° | 6.5 h | 14 | 112 |
| MayMay | 53 | 15° | 5° | 6.3 h | 18 | 161 |
| JuneJun | 68 | 20° | 10° | 7.1 h | 16 | 141 |
| JulyJul | 71 | 21° | 12° | 7.5 h | 15 | 150 |
| AugustAug | 71 | 22° | 12° | 6.9 h | 14 | 139 |
| SeptemberSep | 71 | 18° | 8° | 5.8 h | 13 | 112 |
| OctoberOct | 57 | 14° | 4° | 5.0 h | 13 | 112 |
| NovemberNov | 15 | 7° | −3° | 4.0 h | 14 | 129 |
| DecemberDec | 12 | 2° | −7° | 3.7 h | 13 | 132 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)
45.92° N, 6.87° E · 1,060 m · Europe/Paris
Best time to visit Chamonix
The best time to visit Chamonix is from June to September. Hiking and mountain trips are best from May to October, when the trails are largely free of snow. The wettest month is May with 161 mm of precipitation.
Chamonix through the seasons
How the weather changes over the seasons, with averages for each.
Chamonix in spring
Mar – May
Poor
- 7–15 °C by day
- 6 h of sun a day
- 45 rainy days in all
Chamonix in summer
Jun – Aug
Good
- 20–22 °C by day
- 7 h of sun a day
- 45 rainy days in all
Chamonix in autumn
Sep – Nov
Fair
- 7–18 °C by day
- 5 h of sun a day
- 39 rainy days in all
Chamonix in winter
Dec – Feb
Poor
- 1–3 °C by day
- 4 h of sun a day
- 38 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Chamonix for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Which month for what?
Hiking & mountain trips
May – Oct
13–27 °C in the village, little snow
Rainy months
May
18 or more rainy days, often short showers and storms
Snow
Nov – Apr
Snow on 2 or more days
Best for skiing
Dec – Mar
Estimated snow conditions on slopes at about 1,700 m, from snowfall, temperature and sunshine. A climate estimate, not a snow report.
Chamonix month by month
The typical weather for every month at a glance.
14January1° · 4 h
In January, Chamonix is freezing cold: daytime highs average 1 °C, and nights often drop below freezing (−8 °C). The sun is scarce, with only about 4 hours a day. Precipitation, often as snow, falls on about 13 days, totalling 119 mm. Snow falls on about 9 days. All in all, January is not an ideal month for a holiday in Chamonix.
Chamonix in January21February3° · 5 h
In February, Chamonix is cold: daytime highs average 3 °C, and nights often drop below freezing (−6 °C). Expect around 5 hours of sunshine a day. Precipitation, often as snow, falls on about 11 days, totalling 97 mm. Snow falls on about 8 days. All in all, February is not an ideal month for a holiday in Chamonix.
Chamonix in February24March7° · 6 h
In March, Chamonix is cold: daytime highs average 7 °C, and nights often drop below freezing (−3 °C). Expect around 6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 109 mm in total. Snow falls on about 7 days. All in all, March is not an ideal month for a holiday in Chamonix.
Chamonix in March41April10° · 7 h
In April, Chamonix is cool: daytime highs average 10 °C, and nights cool down to about 1 °C. The sun shines for around 7 hours a day. It rains often – on about 14 days, adding up to 112 mm. Snow falls on about 4 days. All in all, April is a so-so month for a holiday in Chamonix.
Chamonix in April53May15° · 6 h
In May, Chamonix is cool: daytime highs average 15 °C, and nights cool down to about 5 °C. Expect around 6 hours of sunshine a day. It rains often – on about 18 days, adding up to 161 mm. All in all, May is a so-so month for a holiday in Chamonix.
Chamonix in May68June20° · 7 h
In June, Chamonix is mild: daytime highs average 20 °C, and nights cool down to about 10 °C. The sun shines for around 7 hours a day. It rains often – on about 16 days, adding up to 141 mm. All in all, June is a good month for a holiday in Chamonix.
Chamonix in June71July21° · 8 h
In July, Chamonix is warm: daytime highs average 21 °C, and nights cool down to about 12 °C. The sun shines for around 8 hours a day. It rains often – on about 15 days, adding up to 150 mm. All in all, July is a good month for a holiday in Chamonix.
Chamonix in July71August22° · 7 h
In August, Chamonix is warm: daytime highs average 22 °C, and nights cool down to about 12 °C. The sun shines for around 7 hours a day. It rains often – on about 14 days, adding up to 139 mm. All in all, August is a good month for a holiday in Chamonix.
Chamonix in August71September18° · 6 h
In September, Chamonix is mild: daytime highs average 18 °C, and nights cool down to about 8 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 112 mm in total. All in all, September is a good month for a holiday in Chamonix.
Chamonix in September57October14° · 5 h
In October, Chamonix is cool: daytime highs average 14 °C, and nights cool down to about 4 °C. Expect around 5 hours of sunshine a day. Rain is frequent, with about 13 rainy days and 112 mm in total. All in all, October is a so-so month for a holiday in Chamonix.
Chamonix in October15November7° · 4 h
In November, Chamonix is cold: daytime highs average 7 °C, and nights often drop below freezing (−3 °C). Expect around 4 hours of sunshine a day. Rain is frequent, with about 14 rainy days and 129 mm in total. Snow falls on about 6 days. All in all, November is not an ideal month for a holiday in Chamonix.
Chamonix in November12December2° · 4 h
In December, Chamonix is freezing cold: daytime highs average 2 °C, and nights often drop below freezing (−7 °C). The sun is scarce, with only about 4 hours a day. Precipitation, often as snow, falls on about 13 days, totalling 132 mm. Snow falls on about 9 days. All in all, December is not an ideal month for a holiday in Chamonix.
Chamonix in DecemberChamonix compared
Put Chamonix side by side with another destination.
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Chamonix vs. Zermatt
In October Chamonix has the better holiday weather (score 57 vs. 35). During the day Zermatt is 4 °C cooler than Chamonix.
| in October | Chamonix | Zermatt |
|---|---|---|
| Holiday score | 57 | 35 |
| Daytime high | 14° | 10° |
| Sunshine | 5 h | 5 h |
| Rainy days | 13 | 15 |
| Best time | Jun – Sep | Jun – Aug |
Through the year
France in October: the best places
In October, Chamonix ranks 4 of 9 destinations in this country.
- Marseille20°20°86
- 2Paris17°61
- 3Porto-Vecchio22°21°58
- 4ChamonixThis page14°57
- 5Ajaccio21°21°48
- 6Saint-Tropez20°20°43
- 7Cannes20°20°42
- 8Nice20°20°40
Planning a trip to Chamonix
Getting there
Flying from
- Nonstop flight
- about 1 h 30 min
- Distance
- 820 km
- Time zone
- UTC+2
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Chamonix
When is the best time to visit Chamonix?
The best time to visit Chamonix is from June to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Chamonix?
August is the warmest month, with average highs of 22 °C and nights around 12 °C. January is the coolest month at 1 °C.
When does it rain most in Chamonix?
The wettest month is May with 161 mm of precipitation. The driest month is February with 97 mm.
How many hours of sunshine does Chamonix get?
Chamonix gets around 2,060 hours of sunshine a year. The sunniest month is July with 7.5 hours a day; in December there are 3.7 hours a day.
What time zone is Chamonix in?
Chamonix uses the time zone Europe/Paris: UTC+1 in January and UTC+2 in July.
How long is the flight from London to Chamonix?
A nonstop flight from London to Chamonix takes about 1 h 30 min, for a straight-line distance of about 820 km.
Near Chamonix
Other destinations close by.