When to visit Chamonix?
The decision rests on several criteria. Climate score, tourist crowds and feasible activities.
What you grasp in 5 seconds
Chamonix offers 4 comfortable months, with 2 months to avoid (January, December). The gap is sharp: 7.9 in August vs 1.0 in December.
What to check next
Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.
Next action
Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.
How we calculate the score
For mountain destinations, we calculate two scores per month — skiing and hiking — and display the higher of the two.
- 40% snow cover (slope T° corrected by lapse rate -3.6°F/1000ft)
- 40% winter thermal comfort (23–41°F optimal)
- 20% sunshine
- Off-season penalty: ×0.70 adjacent months · ×0.35 outside season
- 40% temperature (50–72°F optimal)
- 40% rain (frequency + daily intensity)
- 20% sunshine
Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →
Compare all 12 months
Month-by-month details: temperature, rain, sunshine, score and verdict.
| Month | T° min | T° max | Rain % | mm/day | Sun | Score | Verdict |
|---|---|---|---|---|---|---|---|
| 🌧️ January → | 25°F | 39°F | 31% | 6.0mm | 4.1h | 1.0/10 | Tough conditions |
| 🌥️ February → | 28°F | 45°F | 30% | 4.5mm | 5.2h | 4.0/10 | Decent period |
| 🌥️ March → | 30°F | 46°F | 32% | 4.8mm | 5.8h | 4.0/10 | Decent period |
| 🌥️ April → | 36°F | 55°F | 34% | 4.4mm | 6.6h | 4.3/10 | Decent period |
| 🌥️ May → | 43°F | 61°F | 44% | 6.2mm | 6.4h | 4.3/10 | Decent period |
| ⛅ June → | 50°F | 70°F | 42% | 4.7mm | 7.0h | 7.4/10 | Best period |
| ☀️ July → | 55°F | 73°F | 38% | 3.9mm | 7.9h | 7.8/10 | Best period |
| ☀️ August → | 55°F | 75°F | 39% | 3.4mm | 7.5h | 7.9/10 | Best period |
| ⛅ September → | 50°F | 64°F | 33% | 4.1mm | 6.1h | 7.3/10 | Best period |
| 🌥️ October → | 43°F | 59°F | 33% | 4.2mm | 5.7h | 4.3/10 | Decent period |
| 🌥️ November → | 32°F | 46°F | 32% | 5.4mm | 4.4h | 4.0/10 | Decent period |
| 🌧️ December → | 27°F | 43°F | 34% | 6.2mm | 4.2h | 1.0/10 | Tough conditions |
Chamonix week by week: your odds of avoiding rain
For each week of the year: in how many years out of 10 it was mostly dry (at most 2 rainy days), 2016 to 2025.
Safest week: Mar 19 to Mar 25, mostly dry in 9 years out of 10 (0.8 rainy day(s) on average).
Most exposed: Jun 4 to Jun 10, mostly dry in 1 years out of 10 (4.3 rainy days on average).
| Jan | Jan 16/1041°F | Jan 85/1038°F | Jan 157/1036°F | Jan 228/1041°F | Jan 294/1042°F |
|---|---|---|---|---|---|
| Feb | Feb 53/1041°F | Feb 126/1045°F | Feb 198/1047°F | Feb 266/1043°F | |
| Mar | Mar 53/1044°F | Mar 126/1047°F | Mar 199/1050°F | Mar 265/1050°F | |
| Apr | Apr 27/1052°F | Apr 97/1055°F | Apr 167/1055°F | Apr 231/1054°F | Apr 303/1055°F |
| May | May 73/1059°F | May 143/1059°F | May 215/1063°F | May 284/1065°F | |
| Jun | Jun 41/1065°F | Jun 114/1069°F | Jun 185/1073°F | Jun 253/1073°F | |
| Jul | Jul 24/1071°F | Jul 93/1072°F | Jul 166/1076°F | Jul 233/1073°F | Jul 305/1074°F |
| Aug | Aug 66/1074°F | Aug 133/1074°F | Aug 207/1074°F | Aug 273/1069°F | |
| Sep | Sep 36/1069°F | Sep 105/1067°F | Sep 176/1064°F | Sep 245/1061°F | |
| Oct | Oct 16/1060°F | Oct 88/1060°F | Oct 157/1060°F | Oct 225/1057°F | Oct 295/1055°F |
| Nov | Nov 55/1049°F | Nov 127/1049°F | Nov 197/1045°F | Nov 265/1041°F | |
| Dec | Dec 35/1040°F | Dec 105/1040°F | Dec 176/1043°F | Dec 246/1043°F |
A specific date? The app computes the same figure day by day.
Annual temperatures — Chamonix
Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.
For your trip
A few angles depending on what kind of trip you are planning.
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
🎟️ Activities & tours · Chamonix
GetYourGuide selection · free cancellation
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a mountain stay.
Country · France
🌡️ Climate
🏔️ Mountain stay
Related destinations & guides
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Where is Chamonix ?
Global position + regional geographic context.