July is warm and sunny across much of Switzerland and is peak time for sightseeing, hiking and lake activities. Expect large crowds at major attractions and higher prices for hotels and transport.
Average daily low and high (°C) and monthly rainfall. The badge shows how it feels, allowing for humidity.
Average temperature across Switzerland in July.
Mittelland
High summer in June is often warm and comfortable, with daytime highs commonly in the low to mid-20s and humid spells building toward afternoon thunderstorms. Swimming in Lake Zurich or Lake Biel becomes a weekend ritual and botanical gardens are in full bloom; congested trains to popular foothill hikes are common on sunny weekends. Bring swimwear, sun protection and a rain layer for sudden storms.
Geneva, Lausanne, Montreux
High summer in July is warm and lively: 24-30°C inland, slightly cooler close to the water where breezes help moderate the heat. Montreux and Lausanne are busy with festivals and lakeside crowds; expect packed trains and ferries on sunny weekends. A sunhat, sunscreen and a light waterproof for sudden afternoon storms will cover most eventualities.
Interlaken, Jungfrau, Engelberg
High summer in July means long, warm days ideal for hiking, via ferratas and lake activities, but expect afternoon thunderstorms that make exposed ridgelines risky. Tourist crowds swell in Interlaken and transport to mountain highlights fills up; book mountain railways and cable cars in advance. Light, breathable clothes, rain shell and a headlamp for early starts or late returns are sensible.
Sion, Zermatt, Saas-Fee, Matterhorn
High summer in July brings hot, dry conditions in the Rhône valley - expect 25-30°C in Sion - while high-alpine huts and trails around Zermatt and Saas-Fee are lively and accessible. Afternoon thunderstorms can occur but are less frequent than on the northern side of the Alps; glacier hikes and long alpine traverse routes are at their best. Light clothing for the valley and insulated layers for high-altitude evenings are sensible.
Lugano, Locarno, Lake Maggiore
High summer in July is hot and muggy compared with the rest of Switzerland; expect 25-32°C in Lugano with warm, humid nights. Thunderstorms are a feature of many afternoons, sometimes heavy and accompanied by lightning that can stop high-elevation hiking. Plan strenuous activity for mornings, keep water and sun protection handy, and be ready for sudden weather changes.
Davos, St. Moritz, Chur
High summer in July is warm at valley floors but pleasantly cool at altitude, with frequent late-afternoon thunderstorms that can limit ridge walking. The long daylight hours are perfect for exploring high passes and glacial lakes around Pontresina and the Bernina range. Early starts, water, and changes of clothing for warm days and cold nights are essential for comfort on long hikes.
One of Europe's largest music festivals held on the shores of Lake Geneva in early to mid-July.
See how July compares with the rest of the year, then read the full guide.