Switzerland
Best Time to Visit Thun
Thun is a charming Swiss town situated on the shores of Lake Thun in the Bernese Oberland. Its picturesque old town and surrounding mountains make it a year-round destination, but the best time to visit depends on your preferences. Thun's climate is influenced by its altitude and lake surroundings, resulting in moderate temperatures and precipitation throughout the year.
✦ Visit Thun in June or September for pleasant weather and manageable crowds, or in April or October for discounts and fewer tourists.
✅ Best months
June and September are the ideal months to visit Thun. June offers pleasant temperatures, averaging 22°C, and manageable crowds, making it perfect for exploring the old town and surrounding mountains. September brings mild temperatures, averaging 17°C, and fewer crowds, ideal for hiking and outdoor activities.
🔥 Peak season
July is the peak month in Thun, with schools on summer break and tourists flocking to the area. Hotel prices surge, and popular attractions can get crowded. The Thun Festival, a 10-day music and arts festival, takes place in late July, drawing a large audience.
💷 Shoulder (best value)
April and October are the best shoulder months to visit Thun, offering discounts on accommodations, milder weather, and fewer crowds. April's temperatures range from 10-15°C, while October's temperatures range from 5-10°C. These months are ideal for hiking and exploring the surrounding nature without the peak-season prices.
🌙 Quietest & cheapest
The quietest and cheapest period to visit Thun is from mid-November to mid-March, when temperatures range from 0-5°C. While it's the low season, you can still enjoy the town's Christmas markets and winter sports, but be prepared for occasional snowstorms and limited opening hours for some attractions.
Thun season by season
Spring (Mar–May)
Weather: Temperatures range from 10-15°C, with occasional rain showers.
Crowds: Low
Good for hiking and exploring the surrounding nature.
Summer (Jun–Aug)
Weather: Warm temperatures, averaging 22-25°C, with occasional thunderstorms.
Crowds: High
Perfect for swimming, hiking, and water sports.
Autumn (Sep–Nov)
Weather: Mild temperatures, averaging 10-15°C, with occasional rain showers.
Crowds: Medium
Ideal for hiking, cycling, and enjoying the fall foliage.
Winter (Dec–Feb)
Weather: Cold temperatures, averaging 0-5°C, with occasional snowstorms.
Crowds: Low
Good for winter sports and Christmas markets.
🎭 Events worth timing a trip around
The Thun Festival (late July) and the Thun Christmas Market (late November to early January) are must-visit events worth timing your trip around.
🧳 What to pack
Pack layers, as Thun's climate can be unpredictable, with sudden rain showers and temperature drops.
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Researched & reviewed by the TripSage editorial team · Updated July 2026.