S
M
T
W
T
F
S
30
77°
56°
31
76°
49°
1
75°
51°
2
72°
47°
3
70°
47°
4
72°
48°
5
74°
53°
6
74°
55°
7
70°
53°
8
73°
52°
9
74°
52°
10
75°
50°
11
75°
54°
12
74°
53°
13
75°
54°
14
76°
52°
15
74°
44°
16
70°
44°
17
66°
50°
18
65°
53°
19
75°
52°
20
72°
47°
21
73°
41°
22
71°
40°
23
61°
40°
24
Hist. Avg.
66°
45°
25
Hist. Avg.
65°
45°
26
Hist. Avg.
65°
44°
27
Hist. Avg.
65°
44°
28
Hist. Avg.
64°
44°
29
Hist. Avg.
64°
44°
30
Hist. Avg.
64°
43°
1
Hist. Avg.
63°
43°
2
Hist. Avg.
63°
43°
3
Hist. Avg.
62°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Keswick Beach
Keswick Beach's September 2026 forecast shows daily high temperatures ranging from 61° to 77°, with overnight lows between 40° and 56°. The average high for September is 72° with an average low of 49°. 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 Keswick Beach. See also: October | November | December.