Switzerland
Best Time to Visit Solothurn
Solothurn, a compact baroque city on the Aare, sees distinct seasons. Summer brings outdoor life along the river; winter is quiet and cold. The best balance of pleasant weather and manageable crowds falls in late spring and early autumn.
✦ Go in June or September for the best mix of warmth, river life, and unhurried exploring.
✅ Best months
May to June and September: warm enough for riverside walks, fewer tourists than peak summer, and the city’s events are just getting going or winding down.
🔥 Peak season
July to August: school holidays fill the city with families; hotel prices rise 20–30%, and the Aare draws swimmers and boaters. The Solothurn Film Festival (January) is a smaller peak for culture crowds.
💷 Shoulder (best value)
April and October: mild but not guaranteed sun; hotel rates drop 15–25%, and you’ll have the old town largely to yourself. April can still be wet; October is crisp.
🌙 Quietest & cheapest
November to February, excluding New Year: cold (0–5°C), short days, many restaurants close on Sundays. Hotel prices hit their floor, but expect grey skies and limited attractions.
Solothurn season by season
Spring (Mar–May)
Weather: 5–15°C, variable, increasing sunshine late May
Crowds: low
Good for walking tours and early riverside strolls.
Summer (Jun–Aug)
Weather: 18–28°C, sunny, occasional thunderstorms
Crowds: high
Ideal for swimming in the Aare and open-air festivals.
Autumn (Sep–Nov)
Weather: 5–20°C, crisp mornings, cooling rapidly after October
Crowds: medium
Harvest markets and wine tasting from nearby Jura vineyards.
Winter (Dec–Feb)
Weather: -2–5°C, snow possible but not heavy, grey skies
Crowds: low
Christmas market (December) is small but charming; otherwise quiet.
🎭 Events worth timing a trip around
Solothurn Literature Days (May) – a respected spoken-word festival; Solothurn Film Festival (January) – one of Switzerland’s key film events, though cold. Both draw modest, focused crowds.
🧳 What to pack
Bring a waterproof jacket or umbrella even in summer: Aare thunderstorms appear quickly, and the city is rain-prone year-round.
Found your dates? Get your hotel briefing.
Room tips, the 14-day forecast for your exact stay, dining, transport and more — free for any Solothurn hotel.
Researched & reviewed by the TripSage editorial team · Updated July 2026.