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