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
52°
48°
20
52°
48°
21
54°
48°
22
52°
50°
23
52°
50°
24
71°
55°
25
72°
53°
26
72°
46°
27
69°
42°
28
69°
47°
29
71°
53°
30
73°
53°
31
69°
51°
1
67°
48°
2
66°
46°
3
66°
51°
4
67°
49°
5
69°
50°
6
66°
48°
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 66° to 73°, with overnight lows between 42° and 55°. The average high for May is 69° with an average low of 49°. 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.
