S
M
T
W
T
F
S
26
74°
60°
27
69°
59°
28
72°
58°
29
75°
55°
30
75°
56°
31
74°
57°
1
74°
58°
2
75°
57°
3
74°
54°
4
73°
56°
5
74°
59°
6
75°
60°
7
72°
59°
8
71°
56°
9
76°
56°
10
74°
56°
11
72°
57°
12
Hist. Avg.
70°
53°
13
Hist. Avg.
70°
53°
14
Hist. Avg.
70°
53°
15
Hist. Avg.
70°
53°
16
Hist. Avg.
70°
53°
17
Hist. Avg.
70°
53°
18
Hist. Avg.
70°
53°
19
Hist. Avg.
70°
53°
20
Hist. Avg.
69°
53°
21
Hist. Avg.
69°
53°
22
Hist. Avg.
69°
52°
23
Hist. Avg.
69°
52°
24
Hist. Avg.
69°
52°
25
Hist. Avg.
69°
52°
26
Hist. Avg.
69°
52°
27
Hist. Avg.
68°
52°
28
Hist. Avg.
68°
52°
29
Hist. Avg.
68°
52°
30
Hist. Avg.
68°
52°
31
Hist. Avg.
68°
52°
1
Hist. Avg.
68°
52°
2
Hist. Avg.
67°
51°
3
Hist. Avg.
67°
51°
4
Hist. Avg.
67°
51°
5
Hist. Avg.
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Harwich
Harwich's August 2026 forecast shows daily high temperatures ranging from 69° to 76°, with overnight lows between 54° and 60°. The average high for August is 73° with an average low of 57°. 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 Harwich. See also: September | October | November.
