S
M
T
W
T
F
S
30
70°
61°
31
68°
61°
1
68°
57°
2
68°
59°
3
66°
63°
4
68°
61°
5
68°
57°
6
75°
59°
7
68°
61°
8
64°
59°
9
64°
55°
10
66°
55°
11
66°
57°
12
68°
55°
13
68°
61°
14
68°
59°
15
66°
59°
16
64°
57°
17
63°
59°
18
66°
57°
19
68°
61°
20
66°
59°
21
68°
59°
22
72°
59°
23
69°
59°
24
70°
60°
25
70°
57°
26
66°
57°
27
68°
58°
28
67°
61°
29
71°
62°
30
68°
58°
1
66°
57°
2
66°
59°
3
60°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Saint Peter Port
Saint Peter Port's September 2026 forecast shows daily high temperatures ranging from 60° to 72°, with overnight lows between 57° and 62°. The average high for September is 68° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Saint Peter Port. See also: October | November | December.
