Verdict: Tough month
Oslo Weather in December
December is deep-winter territory in Oslo — daily highs around 0°C (32°F) and lows near -5°C (23°F). Expect showers on roughly 13 days of the month — rarely trip-ruining, worth planning around. If your dates are flexible, most travelers will have a better time in Oslo outside December.
Average high
0°C / 32°F
Average low
-5°C / 23°F
Rain days
~13
Precipitation
78 mm
What to pack for Oslo in December
- Full winter kit — insulated coat, gloves, warm hat
- Rain gear is non-negotiable — expect rain on roughly 13 days
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Oslo: Jun (21°C / 70°F) · Coolest: Jan (0°C / 32°F) · Wettest: Jul (~14 rain days)
0°
-5°
Jan
2°
-4°
Feb
5°
-2°
Mar
10°
1°
Apr
16°
6°
May
21°
12°
Jun
20°
13°
Jul
20°
13°
Aug
16°
9°
Sep
10°
5°
Oct
4°
1°
Nov
0°
-5°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)