S
M
T
W
T
F
S
26
64°
56°
27
67°
52°
28
66°
51°
29
67°
52°
30
67°
54°
31
70°
56°
1
70°
54°
2
65°
56°
3
67°
57°
4
65°
56°
5
65°
55°
6
66°
55°
7
65°
54°
8
66°
54°
9
65°
56°
10
65°
52°
11
67°
53°
12
65°
54°
13
68°
53°
14
66°
55°
15
67°
53°
16
67°
52°
17
69°
54°
18
70°
56°
19
70°
55°
20
69°
55°
21
69°
54°
22
68°
53°
23
68°
53°
24
69°
55°
25
68°
55°
26
68°
54°
27
67°
55°
28
68°
54°
29
65°
55°
30
67°
54°
31
66°
50°
1
66°
54°
2
67°
54°
3
65°
53°
4
66°
54°
5
63°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Seaham
Seaham's August 2026 forecast shows daily high temperatures ranging from 63° to 70°, with overnight lows between 50° and 57°. The average high for August is 67° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Seaham. See also: September | October | November.