S
M
T
W
T
F
S
26
48°
41°
27
48°
41°
28
48°
45°
29
50°
46°
30
52°
46°
1
50°
48°
2
50°
39°
3
46°
39°
4
43°
36°
5
45°
34°
6
45°
36°
7
43°
41°
8
50°
46°
9
46°
41°
10
43°
36°
11
52°
34°
12
58°
34°
13
58°
41°
14
45°
37°
15
51°
39°
16
52°
39°
17
57°
43°
18
59°
37°
19
64°
47°
20
66°
51°
21
65°
48°
22
74°
51°
23
72°
52°
24
75°
53°
25
69°
52°
26
73°
48°
27
71°
47°
28
69°
48°
29
72°
51°
30
69°
49°
31
70°
50°
1
62°
44°
2
62°
44°
3
63°
41°
4
66°
44°
5
63°
46°
6
63°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oslo
Oslo's May 2026 forecast shows daily high temperatures ranging from 62° to 75°, with overnight lows between 41° and 53°. The average high for May is 68° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Oslo. See also: June | July | August.
