The average temperatures in Interlaken in June are around a high of 75 °F and a low of 53 °F. As we go higher into the mountains on our hikes and adventures, the temperatures could get chillier. You’ll want a warm jacket for the Ice Palace at Jungfraujoch and shorts for our hikes. It’s not uncommon for it to rain, so be sure to bring your rain jacket too. Also, a summer heat wave in Europe is now becoming a common occurrence. Temps could be in the 90s. Take a look at the forecast before packing!