S
M
T
W
T
F
S
26
57°
34°
27
57°
35°
28
60°
38°
29
63°
44°
30
69°
45°
1
69°
43°
2
65°
42°
3
62°
39°
4
59°
39°
5
58°
38°
6
57°
39°
7
54°
36°
8
54°
35°
9
55°
36°
10
54°
36°
11
55°
37°
12
56°
36°
13
56°
36°
14
57°
37°
15
57°
37°
16
59°
38°
17
58°
37°
18
60°
39°
19
59°
38°
20
61°
42°
21
60°
38°
22
60°
40°
23
63°
41°
24
64°
39°
25
64°
41°
26
61°
42°
27
62°
43°
28
62°
42°
29
64°
43°
30
62°
45°
31
65°
42°
1
62°
40°
2
66°
41°
3
64°
43°
4
66°
47°
5
66°
42°
6
65°
42°
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 54° to 69°, with overnight lows between 34° and 47°. The average high for May is 61° with an average low of 40°. 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.
