Verdict: Fair month
Oslo Weather in April
April is mild-to-cool in Oslo, topping out near 10°C (50°F) — comfortable with a layer on. Rain is occasional — about 8 wet days in a typical year. April is workable in Oslo if your dates are fixed — just plan around the conditions.
Average high
10°C / 50°F
Average low
1°C / 34°F
Rain days
~8
Precipitation
50 mm
What to pack for Oslo in April
- A proper warm jacket, and a hat for mornings
- A packable rain shell or compact umbrella earns its space
- Comfortable walking shoes — every guide on this site assumes you'll use them
April 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)