Verdict: Tough month
Interlaken Weather in December
December is properly cold in Interlaken, with highs of only 8°C (46°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 Interlaken outside December.
Average high
8°C / 46°F
Average low
2°C / 36°F
Rain days
~16
Precipitation
179 mm
What to pack for Interlaken in December
- A proper warm jacket, and a hat for mornings
- 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 Interlaken: Aug (25°C / 77°F) · Coolest: Jan (7°C / 45°F) · Wettest: May (~20 rain days)
7°
2°
Jan
10°
3°
Feb
12°
3°
Mar
14°
5°
Apr
18°
9°
May
23°
14°
Jun
24°
16°
Jul
25°
16°
Aug
21°
14°
Sep
18°
10°
Oct
11°
6°
Nov
8°
2°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)