S
M
T
W
T
F
S
29
45°
41°
30
46°
41°
31
48°
43°
1
50°
39°
2
41°
36°
3
45°
39°
4
46°
41°
5
45°
36°
6
46°
39°
7
48°
41°
8
48°
45°
9
52°
32°
10
49°
35°
11
54°
34°
12
51°
39°
13
55°
39°
14
55°
40°
15
58°
40°
16
58°
39°
17
59°
38°
18
60°
41°
19
60°
41°
20
60°
42°
21
61°
41°
22
47°
32°
23
48°
34°
24
46°
33°
25
47°
33°
26
48°
32°
27
49°
32°
28
50°
33°
29
49°
32°
30
50°
32°
1
51°
35°
2
50°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Oslo
Oslo's April 2026 forecast shows daily high temperatures ranging from 46° to 61°, with overnight lows between 32° and 42°. The average high for April is 53° with an average low of 36°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Oslo. See also: May | June | July.