Verdict: Tough month
Wengen Weather in December
December is properly cold in Wengen, with highs of only 4°C (39°F). It's also the wet side of the calendar: rain falls on about 16 days, so build flexibility into plans. If your dates are flexible, most travelers will have a better time in Wengen outside December.
Average high
4°C / 39°F
Average low
-2°C / 28°F
Rain days
~16
Precipitation
170 mm
What to pack for Wengen in December
- Full winter kit — insulated coat, gloves, warm hat
- Rain gear is non-negotiable — expect rain on roughly 16 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Wengen: Jul (20°C / 68°F) · Coolest: Jan (3°C / 37°F) · Wettest: May (~23 rain days)
3°
-4°
Jan
6°
-2°
Feb
7°
-1°
Mar
10°
1°
Apr
13°
5°
May
18°
10°
Jun
20°
12°
Jul
20°
12°
Aug
16°
9°
Sep
14°
6°
Oct
8°
1°
Nov
4°
-2°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)