S
M
T
W
T
F
S
26
37°
28°
27
37°
30°
28
39°
30°
29
41°
30°
30
45°
41°
1
45°
39°
2
43°
32°
3
37°
30°
4
42°
32°
5
42°
33°
6
40°
29°
7
41°
29°
8
44°
33°
9
46°
40°
10
49°
37°
11
46°
34°
12
44°
36°
13
48°
38°
14
46°
36°
15
45°
35°
16
50°
38°
17
47°
30°
18
49°
34°
19
49°
33°
20
47°
32°
21
47°
32°
22
48°
30°
23
47°
30°
24
48°
31°
25
50°
34°
26
53°
36°
27
54°
37°
28
55°
37°
29
55°
31°
30
49°
33°
31
48°
32°
1
48°
32°
2
49°
33°
3
49°
36°
4
50°
34°
5
50°
34°
6
53°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Longyearbyen
Longyearbyen's May 2026 forecast shows daily high temperatures ranging from 40° to 55°, with overnight lows between 29° and 40°. The average high for May is 48° with an average low of 34°. 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 Longyearbyen. See also: June | July | August.
