Weather in Switzerland in July

How July compares

July is the 1st warmest month of the year in Switzerland. Against London's average high of 21.8°C in July, Switzerland is 1.4°C warmer by day and 1.0°C warmer at night.

Daytime and night-time in July

The typical July day in Switzerland peaks at 23.2°C, but that is an average: the warmest 10% of days reach 28.8°C or more. Roughly 1 in 3 days top 25°C and 1 in 19 pass 30°C. Nights average 14.5°C; one night in ten drops to 10.9°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest July day here reached 34.8°C (2019-07-25) and the coldest night 7.3°C (1993-07-13).

Rain in July

Wet (more than 8 rainy days): about 15 days with 1 mm or more, 146 mm in total. Year to year it varies a lot - the wettest July was 2014 with 302 mm, the driest 2006 with 43 mm. Humidity averages 73%.

Sunshine and daylight

Around 6.8 hours of sunshine a day (estimated from cloud cover), 15.4 hours of daylight: the sun rises about 05:45 and sets about 21:19 local time in mid-July. Average cloud cover is 56%.

Is July a good time to visit Switzerland?

July is not the strongest month here: warm days and frequent rain. The best months for Switzerland on our scoring are July, August, June.

Warm days, with occasional hotter spells

For a UK traveller, July's warmth should feel fairly familiar: the average daytime high is 1.4°C above London's July figure. It is warm enough for light daytime clothing, but not a month to assume constant heat. Days reach 25°C about 35% of the time, while 30°C is much less common, at 5%. On hotter days, move more demanding outdoor plans away from midday and keep water handy. Evenings call for a different approach. With an average night low of 14.5°C, a jumper or light jacket is a sensible addition, especially if you expect to stay outside after the sun goes down.

Rain is the main compromise

July suits travellers who can be flexible about outdoor time better than those whose trip depends on dry weather throughout. About 15 days receive at least 1 mm of rain, so waterproof clothing belongs in your bag rather than on a last-minute shopping list. That figure does not mean those days are wet from morning to evening, but it does make a completely rain-free stay something you should not rely on. Keep some indoor alternatives available and avoid making every day's plans dependent on clear skies. Light layers beneath a waterproof give you more flexibility than dressing only for either sunshine or rain.

Long daylight gives you room to adjust

There are about 15.4 hours of daylight in July, giving you plenty of scope to shift outdoor plans earlier or later. Sunshine averages about 6.8 hours a day, so long days should not be confused with uninterrupted sun. The useful combination is warmth and time: you can leave space in the day rather than trying to fit everything into midday. July sits alongside June and August among the best months to consider here. Choose it for the warmest average conditions, but keep expectations balanced. It is a summer option for travellers who accept mixed weather, not a reliable dry-weather choice.