Chamonix, France

Chamonix sits in a highland climate in France, and the 2015–2024 weather record gives its sunshine a clear shape: the July peak reaches a 93/100 sun score, with daytime highs around 23°C — a solid base for an outdoors-led escape.

July is the heat peak, averaging 23°C highs; January is the cool end, when nights dip to around -4°C. The wet–dry contrast is modest: 59% rain-day odds in May against 37% in October. No month averages 24°C highs, so this is a destination for light-jacket sunshine rather than beach heat.

The seasonal arc is clear in the data: summer averages 22°C against winter's 5°C, while rain-day odds move from 42% in winter and 50% in spring to 46% in summer and 42% through autumn. That makes summer the statistical sweet spot (season score 92), with autumn a workable second; winter is where the odds thin out.

Best months to visit Chamonix

Our month-by-month scoring puts July first (93/100), with June (91) and August (91) close behind. In practice you have flexibility — June–September all stay above a 70 sun score. The month to avoid on pure weather odds is December (44/100).

Put against its 82 mountain peers in July, it lands in the sunnier half of the group, ahead of 57% of them.

Month-by-month breakdown for Chamonix → · More destinations for July →

The live forecast backs this up: of the next 15 days, 8 look mostly clear and none carry meaningful rain risk, in a 0–16°C band. Today's cached sun score is 62/100.