The best time to visit Interlaken is during the summer, which lasts from June to September. Since the temperature during this time is pleasant, you can indulge in walks, trekking, mountaineering, and other adventure activities. It is also the perfect time to witness multiple music festivals in the city, namely the famous William Tell festival held in July and August, the Jungfrau Music Festival, the Interlaken Classics Music Festival, the International Trucker, the Country Festival, the Greenfield Festival, and others. From September to November, the number of tourists will start to decline, which will enable you to enjoy the tourist attractions without large crowds, and your visit will coincide with the grape harvest. For winter sports enthusiasts, December to March would be the best time to visit Interlaken. The Jungfraujoch region receives heavy snowfall during the winter months. From April to May, the weather starts to clear, and you can begin to see greenery around the region. It is the time when nature walks, hiking trails, and the ropeways open again to the public. It is during this time that Interlaken may receive light showers during the day, so be prepared to carry your umbrella. Interlaken also hosts the Sechselauten festival and Interlaken Music Festival during the spring.