Jan 15, 2017 - 7:30 AM
As you've probably read, the weather in May can be variable. The ski season doesn't finish until April and there will be snow on the north facing slopes. You'll need some cold weather clothes, especially in the shade or at night. Think more Thredbo than Cairns. As for Wengen or Muerren, they're both at the same altitude, just on different sides of the Lauterbrunnental. For my money, the views from Wengen are slightly more impressive, but if it's your first trip, either will be fine.