S
M
T
W
T
F
S
29
78°
70°
30
80°
72°
31
79°
72°
1
78°
68°
2
82°
72°
3
82°
73°
4
81°
62°
5
83°
68°
6
83°
63°
7
77°
68°
8
74°
68°
9
79°
67°
10
79°
69°
11
78°
60°
12
79°
70°
13
79°
70°
14
81°
71°
15
80°
64°
16
81°
60°
17
84°
65°
18
84°
68°
19
87°
69°
20
80°
68°
21
80°
66°
22
81°
66°
23
82°
64°
24
85°
66°
25
85°
65°
26
86°
66°
27
84°
67°
28
85°
73°
29
85°
70°
30
86°
69°
1
85°
69°
2
85°
68°
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 80° to 87°, with overnight lows between 60° and 73°. The average high for April is 84° with an average low of 67°. 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.