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
54°
35°
8
55°
40°
9
52°
34°
10
53°
33°
11
56°
35°
12
54°
38°
13
53°
40°
14
51°
39°
15
55°
37°
16
57°
41°
17
60°
38°
18
59°
37°
19
61°
38°
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 49° to 61°, with overnight lows between 31° and 41°. 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.