monitor Jungfraujoch weather from home

Weather updates are given directly from the company that runs Jungfraujoch -
https://www.jungfrau.ch/en-gb/live/weather/?srsltid=AfmBOoq6ehnd2IPmUuntoCwi3X_TjAfwGuY4p4eUvpF45jMPDUoeDv94

Regardless, the weather doesn't change that much up there. There is always snow and if it's sunny it can feel fine and if it's cloudy and windy it can feel horrible - but you wouldn't really want to be up there then anyway, because the point is to be able to see the views. I've done Jungfraujoch with the ice caves, outdoor viewing platform and even walking out onto the snow many times in regular trail runner shoes (not waterproof) + a sweatshirt with a light vest over top of it. I wouldn't want to hang out there all day like that necessarily, but to go out in those spots for short amounts of time to get your photos and then move on is fine. Your shoes don't get wet in the ice cave, it's solid ice, not slushy.

They sell warm weather gear in Kleine Scheidegg at Wys (at the base of Jungfraujoch before you go up), so in the event you get there and feel like you don't have enough clothing, buy a pair of gloves and hat there at the shop and then you can choose later if you want to take them with you on the rest of your trip or just donate them to some other frigid looking tourist :)

If you have a few days in Wengen the best you may be able to do is to pick the best day of your stay for the trip up... BUT the Jungfraujoch is at ~11,000 feet and Wengen is at ~4,200 feet. In the Alps (or the Cascades) in mid-May you may get all types of weather in one day in one location, or totally different weather at different elevations. I always travel with base layers and a puffy jacket and a light water-resistant shell anyway since wet/cool weather can occur anywhere, particularly in May. OR it can be terribly hot EVERYWHERE as it has been in several recent years. Good luck.

Thank you both! I think I will follow Wanderweg's example. I really don't want to haul a puffy coat and boots through France and Italy (even Luzern and Basel) before and after Switzerland. We'll just roll the dice and hope for at least one good weather day for Jungfraujoch..

When we went up one year, many people got on the train from Wengen in sandals, and some women in sundresses. Upon arrival, they went straight to the gift shop and purchased overpriced puffy coats. At 11,000 ft with snow on the ground, it's darn cold, even on a sunny, clear day. What do you usually wear for weather in the 30's? For me, I had and wore gloves, but we all tolerate cold differently.
Have a great trip!

You don’t need waterproof shoes just to go up to the Jungfrau. It all depends on the weather but maybe a lightweight fleece with a lightweight jacket like a Nanopuff in May. We were there two years ago at the end of August and were in shirt sleeves except for the Ice Caves which were cold. Even at 11,000+ feet, if the sun is out shining on the snow, it can be warm, just like spring skiing. And as others have said, you really don’t want to spend that much money to go up there if the sun isn’t shining and it’s full of clouds.

Jungfraujoch does have areas where you are walking on snow and ice and traction is more important than waterproof for footwear options. I have been to several high elevations like Jungfraujoch taking in the views from the platforms (no hikes). In all cases wearing my rain jacket over several layers of my packed luggage was sufficient. Most have heat indoor spaces to warm up.

I monitored Meteo Swiss before my trip and found it is really good for the upcoming 2-3 days with the later days changing as the approached.

I will have a hat (and a hood) and gloves in addition to wool socks and both silk and merino underlayers and probably a fleece under my rain jacket if I have room for it. I think it will be fine and I can restrict time outside as needed.

I am going for the views; not for hiking. :) Cheers, Susan

And just so you are aware, the Ice Caves are slippery as you are walking on glaze ice, avoid wearing smooth soled shoes :-)