Here are our retreats in September 2025 in Switzerland from the Dark Retreat section. To know if September is the right month for you to travel in Switzerland, here are a few key weather facts. Temperatures can drop to 1 degrees in September. Highs, on the other hand, can reach 22 degrees.
Heiden, Switzerland
from $2,604 / 10 Days
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Biedenkopf, Germany
from $318 / 3 Days
Sylt, Germany
from $739 / 6 Days
Mondsee, Austria
from $214 / 2 Days
Winseler, Luxembourg
from $680 / 4 Days
Warnkenhagen OT Gottin, Germany
from $1,467 / 7 Days
from $676 / 5 Days
Schorfheide-Klandorf, Germany
from $278 / 4 Days
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