S
M
T
W
T
F
S
30
66°
54°
31
64°
53°
1
63°
55°
2
63°
56°
3
64°
57°
4
65°
53°
5
61°
56°
6
65°
57°
7
Hist. Avg.
66°
50°
8
Hist. Avg.
65°
50°
9
Hist. Avg.
65°
50°
10
Hist. Avg.
65°
50°
11
Hist. Avg.
65°
49°
12
Hist. Avg.
64°
49°
13
Hist. Avg.
64°
49°
14
Hist. Avg.
64°
49°
15
Hist. Avg.
64°
49°
16
Hist. Avg.
64°
49°
17
Hist. Avg.
63°
49°
18
Hist. Avg.
63°
48°
19
Hist. Avg.
63°
48°
20
Hist. Avg.
63°
48°
21
Hist. Avg.
63°
48°
22
Hist. Avg.
62°
48°
23
Hist. Avg.
62°
48°
24
Hist. Avg.
62°
48°
25
Hist. Avg.
62°
48°
26
Hist. Avg.
62°
47°
27
Hist. Avg.
61°
47°
28
Hist. Avg.
61°
47°
29
Hist. Avg.
61°
47°
30
Hist. Avg.
61°
47°
1
Hist. Avg.
61°
47°
2
Hist. Avg.
61°
47°
3
Hist. Avg.
60°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Hornsea
Hornsea's September 2026 forecast shows daily high temperatures ranging from 61° to 66°, with overnight lows between 53° and 57°. The average high for September is 64° with an average low of 55°. 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 Hornsea. See also: October | November | December.