S
M
T
W
T
F
S
26
49°
37°
27
50°
37°
28
45°
37°
29
57°
39°
30
47°
38°
1
44°
37°
2
47°
38°
3
48°
37°
4
47°
36°
5
53°
40°
6
49°
40°
7
48°
37°
8
49°
39°
9
53°
41°
10
54°
44°
11
50°
41°
12
45°
38°
13
53°
38°
14
47°
42°
15
53°
42°
16
63°
51°
17
58°
41°
18
56°
46°
19
51°
45°
20
52°
41°
21
56°
43°
22
57°
45°
23
57°
46°
24
58°
49°
25
61°
48°
26
58°
49°
27
61°
50°
28
63°
39°
29
62°
41°
30
65°
45°
31
62°
45°
1
63°
44°
2
63°
43°
3
64°
42°
4
63°
41°
5
64°
46°
6
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tadoussac
Tadoussac's May 2026 forecast shows daily high temperatures ranging from 47° to 66°, with overnight lows between 39° and 51°. The average high for May is 59° with an average low of 45°. 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 Tadoussac. See also: June | July | August.