S
M
T
W
T
F
S
26
40°
24°
27
41°
24°
28
41°
25°
29
42°
26°
30
42°
26°
1
44°
25°
2
43°
26°
3
44°
32°
4
44°
33°
5
45°
33°
6
47°
31°
7
45°
32°
8
45°
31°
9
46°
32°
10
47°
34°
11
46°
34°
12
46°
35°
13
49°
35°
14
47°
33°
15
46°
30°
16
46°
30°
17
47°
31°
18
46°
30°
19
46°
29°
20
47°
30°
21
47°
30°
22
53°
34°
23
52°
35°
24
50°
36°
25
55°
40°
26
57°
40°
27
58°
39°
28
57°
38°
29
56°
37°
30
53°
36°
31
52°
35°
1
51°
35°
2
55°
31°
3
52°
32°
4
53°
31°
5
52°
35°
6
53°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tromso
Tromso's May 2026 forecast shows daily high temperatures ranging from 40° to 58°, with overnight lows between 24° and 40°. The average high for May is 48° with an average low of 32°. 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 Tromso. See also: June | July | August.