The Bernese
Oberland Traverse
is likely to have the best conditions between mid-July and the end of the
August. Huts are generally open from mid-June until mid-September, which
defines the hiking season for this route.
Due to rest days at the hotel on the last day, this itinerary cannot start on a Tuesday in July/August, or on Tuesdays, Wednesdays, or Thursdays in June/September.
Here's what
conditions to expect at different times of year:
Late June:
Huts are open and routes from the valleys to the huts are clear. Problematic
snow is likely on the passes and at high elevations. There is a high risk of
not being able to complete the itinerary during this time and it is almost
certain that one of the three via ferratas will not be doable. Even if the
passes are clear in time for your hike, they usually clear at the very last
minute, and June hikers always have a couple of stressful weeks leading up to
their hike as they eagerly wait for the snow to melt in time for their hike. In
almost every year, it is not possible to predict what trails are going to be
like in June until one or two weeks before. This is true even after a winter
with low snowfall.
July and
August: Problematic snow can remain on the route through the
second week of July, but it is less likely than in June. Summer settles in and
days are usually mostly sunny with an afternoon thunderstorm or two. These
thunderstorms rarely interfere with hiking itineraries and are not usually
problematic. Of course, thunderstorm safety should be practiced. The
wildflowers at the higher elevations should be all out by mid-July. Hiking
conditions during this time are often favorable, and it’s a great time to be on
the trail.
Early
September: The first snow of the winter usually falls in the
first week of September. One via ferrata on this route is at such a high
elevation that it’s season often ends with the first snowfall. The snow rarely
sticks around for more than a day, but the visibility can be very low, making
navigation problematic, and maybe even impossible, on this one day. Most days
in early September are beautiful and perfect, and the thunderstorms are less,
but there is a higher risk of snowstorms and conditions that may prevent you
from completing your hike during this time. Many hikers have incredible weather
in September, but some do not. It’s simply a matter of luck. The later you push
into September, the higher the risk that unfavorable conditions (usually snow,
but sometimes extremely cold temperatures) can interfere with your hiking
itinerary. We notice that customers who are on the trail beyond September 15th
are much more likely to quit their hike early due to conditions. In early
September, the wildflower season is mostly over, with the exception of
brilliant bursts of fireweed that mark the end of summer.
In all
months, it’s reasonable to expect 1 to 2 rainy days on the trail.
To research
more detailed information about average temperatures, precipitation, etc., we
recommend checking Meteoblue
(go to “History & Climate” and then “Climate (modelled)”) for Kleine Scheideg
and Hohtürli.
Read more about Understanding the hut-to-hut hiking season in the Alps.