average temperature in interlaken
Interlaken: Annual Weather Averages. July is the hottest month in Interlaken with an average temperature of 19Â°C (65Â°F) and the coldest is January at -1Â°C (31Â°F) with the most daily sunshine hours at 8 in July. The wettest month is July with an average of 140mm of rain. Loading weather data.