Best time to visit Chamonix
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Chamonix
6 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Chamonix).
- 1
Luxury Private Concierge - Chamonix Bespoke Experience - 2
Luxury Private Concierge - Annecy Bespoke Experience - 3
Luxury Private Concierge - Bespoke Megève Experience - 4
Chamonix Challenges EVG EVJF City Challenge team - 5
Tandem Paragliding Flight to Chamonix Facing Mont Blanc - 6
Chamonix: Panorama Mont-Blanc ebike tour Newbie
Last refreshed 2026-06-16.
Similar climatesGstaad94% · Verbier93% · Zell am See91%
Other destinations with the most-alike year-round climate to Chamonix (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Chamonix's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | -4–4 | 1 | 13 | 194 | 14.9 | 62% | 6 | 144 | 1 | Quiet | 7 |
| Feb | -2–8 | 5 | 12 | 157 | 13.1 | 60% | 7 | 158 | 2 | Quiet | 7 |
| Mar | -1–9 | 7 | 13 | 175 | 13.5 | 59% | 7 | 203 | 4 | Quiet | 7 |
| Apr | 2–12 | 10 | 14 | 202 | 14.4 | 58% | 7 | 227 | 5 | Quiet | 5 |
| May | 6–16 | 15 | 18 | 248 | 13.8 | 64% | 7 | 247 | 5 | Quiet | 2 |
| Jun | 11–21 | 21 | 18 | 218 | 12.1 | 63% | 7 | 274 | 7 | Quiet | 1 |
| Jul | 13–23 | 24 | 14 | 167 | 11.9 | 58% | 7 | 298 | 7 | Quiet | 1 |
| Aug | 13–23 | 23 | 11 | 144 | 13.1 | 55% | 8 | 271 | 6 | Peak | 2 |
| Sep | 9–19 | 18 | 13 | 174 | 13.4 | 65% | 6 | 218 | 5 | Moderate | 2 |
| Oct | 6–15 | 15 | 12 | 164 | 13.7 | 66% | 6 | 184 | 3 | Quiet | 3 |
| Nov | 0–9 | 7 | 13 | 189 | 14.5 | 68% | 6 | 140 | 2 | Peak | 6 |
| Dec | -3–5 | 2 | 16 | 243 | 15.2 | 68% | 6 | 121 | 1 | Peak | 6 |
UV Index in Chamonix by Month
UV index in Chamonix peaks at 7 (high) in July, dropping to 1 (low) in December. June, July, August have high UV — SPF 30+ and sunglasses recommended.
Best months in detail
February
7/10-2–8°C (feels 5°C) · 12 rain days (157h) · 158 sun hours · 60% humidity · Quiet crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
January
7/10-4–4°C (feels 1°C) · 13 rain days (194h) · 144 sun hours · 62% humidity · Quiet crowd · UV 1 (low)
March
7/10-1–9°C (feels 7°C) · 13 rain days (175h) · 203 sun hours · 59% humidity · Quiet crowd · UV 4 (moderate)
Every month
Show the other 9 months in detail
April
5/102–12°C (feels 10°C) · 14 rain days (202h) · 227 sun hours · 58% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 6 (high)
May
2/106–16°C (feels 15°C) · 18 rain days (248h) · 247 sun hours · 64% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
June
1/1011–21°C · 18 rain days (218h) · 274 sun hours · 63% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)
July
1/1013–23°C · 14 rain days (167h) · 298 sun hours · 58% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 9 (very high)
August
2/1013–23°C · 11 rain days (144h) · 271 sun hours · 55% humidity · Peak crowd · UV 6 (high) · sunniest 1 in 10 days reach 8 (very high)
September
2/109–19°C · 13 rain days (174h) · 218 sun hours · 65% humidity · Moderate crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 6 (high)
October
3/106–15°C · 12 rain days (164h) · 184 sun hours · 66% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 5 (moderate)
November
6/100–9°C (feels 7°C) · 13 rain days (189h) · 140 sun hours · 68% humidity · Peak crowd · UV 2 (low)
December
6/10-3–5°C (feels 2°C) · 16 rain days (243h) · 121 sun hours · 68% humidity · Peak crowd · UV 1 (low)
Frequently asked questions about visiting Chamonix
When is the best time to visit Chamonix?
February is the highest-scoring month (7/10 on the Holiday Climate Index). Typical conditions: -2–8°C (12 rainy days). The top three months by score are February, January, March.
What is the worst time to visit Chamonix?
June is the lowest-scoring month (1/10, capped by extreme heat). Typical conditions: 11–21°C (18 rainy days).
Is Chamonix too hot in summer?
6 months (May, June, July, August, September, October) trip the heat deal-breaker in our scoring: apparent temperature crosses the comfort cap, so even with clear skies and low rain the score is held down. Plan around it if heat tolerance is low.
When are crowds lowest in Chamonix?
Search-interest seasonality (Google Trends 2021-2025) is lowest in April and peaks in December. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Chamonix have good weather but fewer tourists?
January (climate 7/10, crowd index 30) and February (climate 7/10, crowd index 26) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Chamonix by month?
UV peaks at 7 (high) in July and is lowest in December at 1 (low). Monthly peak values: Jan 1, Feb 2, Mar 4, Apr 5, May 5, Jun 7, Jul 7, Aug 6, Sep 5, Oct 3, Nov 2, Dec 1.
What is the UV index in Chamonix in July?
July is the peak UV month in Chamonix, with a daily-peak UV index of 7 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.
How high can UV get in Chamonix on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. June is the worst case: typical days average UV 7 (high), but the top 10% of days reach UV 9 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: February, April, May, June, July, August, September, October. Plan sun protection for the worst case, not the average.