S
M
T
W
T
F
S
26
72°
50°
27
75°
46°
28
72°
46°
29
66°
52°
30
73°
59°
1
70°
55°
2
68°
52°
3
64°
48°
4
63°
51°
5
59°
49°
6
63°
46°
7
64°
47°
8
64°
52°
9
65°
53°
10
66°
49°
11
64°
47°
12
62°
50°
13
62°
51°
14
63°
50°
15
62°
49°
16
61°
48°
17
62°
50°
18
61°
52°
19
62°
50°
20
61°
49°
21
61°
47°
22
62°
47°
23
62°
48°
24
63°
51°
25
63°
50°
26
64°
54°
27
63°
53°
28
63°
50°
29
64°
52°
30
68°
54°
31
70°
56°
1
70°
56°
2
71°
57°
3
71°
57°
4
70°
56°
5
68°
56°
6
66°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Saint-Nazaire
Saint-Nazaire's May 2026 forecast shows daily high temperatures ranging from 59° to 71°, with overnight lows between 46° and 57°. The average high for May is 64° with an average low of 51°. 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 Saint-Nazaire. See also: June | July | August.