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
48°
45°
10
48°
43°
11
48°
45°
12
48°
45°
13
48°
46°
14
46°
45°
15
52°
38°
16
60°
42°
17
61°
43°
18
53°
45°
19
55°
42°
20
58°
39°
21
63°
42°
22
63°
39°
23
59°
36°
24
53°
34°
25
58°
37°
26
56°
35°
27
58°
38°
28
52°
36°
29
58°
36°
30
59°
40°
1
60°
40°
2
60°
39°
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 52° to 63°, with overnight lows between 34° and 45°. The average high for April is 58° with an average low of 39°. 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.