S
M
T
W
T
F
S
28
77°
63°
29
77°
57°
30
79°
57°
1
75°
59°
2
75°
57°
3
84°
59°
4
86°
59°
5
92°
62°
6
95°
65°
7
98°
65°
8
96°
65°
9
96°
67°
10
95°
68°
11
95°
69°
12
94°
70°
13
91°
69°
14
90°
67°
15
88°
64°
16
89°
65°
17
78°
62°
18
77°
60°
19
76°
61°
20
77°
61°
21
77°
60°
22
76°
61°
23
71°
61°
24
76°
60°
25
74°
61°
26
73°
61°
27
71°
60°
28
74°
60°
29
75°
61°
30
74°
59°
31
73°
58°
1
73°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Saint-Nazaire
Saint-Nazaire's July 2026 forecast shows daily high temperatures ranging from 71° to 98°, with overnight lows between 58° and 70°. The average high for July is 83° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Saint-Nazaire. See also: August | September | October.