S
M
T
W
T
F
S
29
16°
9°
30
12°
7°
31
18°
9°
1
27°
12°
2
21°
10°
3
16°
12°
4
12°
3°
5
18°
1°
6
27°
16°
7
32°
19°
8
36°
30°
9
37°
32°
10
37°
32°
11
37°
32°
12
34°
28°
13
32°
23°
14
32°
23°
15
36°
30°
16
37°
32°
17
31°
28°
18
36°
33°
19
36°
31°
20
32°
14°
21
19°
17°
22
24°
17°
23
20°
15°
24
17°
11°
25
13°
10°
26
15°
13°
27
22°
-4°
28
21°
-2°
29
22°
-2°
30
26°
4°
1
26°
4°
2
24°
3°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Longyearbyen
Longyearbyen's April 2026 forecast shows daily high temperatures ranging from 13° to 36°, with overnight lows between -4° and 33°. The average high for April is 24° with an average low of 12°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Longyearbyen. See also: May | June | July.