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
59°
41°
9
60°
42°
10
58°
38°
11
53°
33°
12
58°
41°
13
58°
41°
14
56°
41°
15
59°
41°
16
60°
42°
17
62°
44°
18
64°
46°
19
64°
46°
20
66°
48°
21
61°
42°
22
61°
45°
23
60°
44°
24
60°
43°
25
64°
40°
26
65°
41°
27
67°
46°
28
64°
45°
29
66°
42°
30
68°
44°
31
69°
47°
1
70°
47°
2
70°
46°
3
69°
46°
4
70°
42°
5
64°
43°
6
70°
45°
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 53° to 70°, with overnight lows between 33° and 48°. The average high for May is 63° with an average low of 43°. 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.
