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
54°
30°
7
59°
34°
8
55°
40°
9
52°
35°
10
51°
35°
11
57°
37°
12
57°
38°
13
58°
37°
14
59°
38°
15
61°
39°
16
59°
40°
17
59°
40°
18
60°
41°
19
47°
34°
20
49°
31°
21
53°
38°
22
52°
36°
23
55°
35°
24
55°
37°
25
51°
37°
26
49°
33°
27
49°
33°
28
50°
34°
29
50°
34°
30
51°
36°
1
52°
35°
2
53°
36°
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 47° to 61°, with overnight lows between 30° and 41°. The average high for April is 54° 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.