Weather in Zermatt in July

A good month. July is a solid month to be in Zermatt. You should expect rain on 16 days of the month, which is more days wet than dry.

July ranks 2 of 12 in Zermatt. Only August scores clearly higher, and the difference is small enough to be settled by price rather than weather.

Rain on 16 days, 3 of them heavy. Enough to need a plan B, not enough to need a plan around it. Nothing specialised needed — this is the month you pack for the trip rather than for the weather.

What the averages hide

Averages flatten a month, and this one hides a few things: it never really gets hot: not one day in an average July reaches 30 °C. Across the twenty years measured, the hottest July day reached 25.5 °C and the coldest night fell to 0.8 °C, and the wettest single day dropped 34 mm — roughly 35% of the month's rain in one day.

July is statistically steady but not small: the year-to-year variation is modest in relative terms, yet the wettest July on record still delivered 202 mm against 51 mm in the driest. In a month this wet, even a tame spread is a lot of rain in absolute terms — the 96 mm average is a reasonable planning figure, not a promise.

Wind is light at 5.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 75%, high enough to notice on the warm days without dominating them.

How July sits in the year

Temperatures hold steady either side: 17.1 °C in June, 18.7 here, 18.5 in August. Nothing about the timing within the month matters much.

Daylight in July

July is at or near the longest days of Zermatt's year: 15.4 hours of daylight, losing 0.8 hours across the month. Evenings are the real gain — dinner outdoors still happens in full light.

An inland climate

With no coast nearby, the year swings a fair way — 28.7 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. At 1608 m, altitude is doing as much work here as latitude: thinner air means fierce sun by day and heat that leaves the moment it sets.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Zermatt versus nearby

If Zermatt is one option among several, the nearby comparison is worth making. Chamonix-Mont-Blanc is close enough to be a coin toss — 3.5 °C warmer, the same number of rain days. Luzern is close enough to be a coin toss — 5.6 °C warmer, 2 days more rain.

So: July is effectively as good as it gets here — 1 points behind August, which is inside the margin where the weather stops being the deciding factor and price starts being it.

Every month in Zermatt

See all twelve months in Zermatt, or where else to go in July.