S
M
T
W
T
F
S
26
67°
64°
27
75°
62°
28
78°
66°
29
68°
66°
30
67°
63°
31
77°
64°
1
78°
68°
2
80°
67°
3
80°
70°
4
81°
64°
5
82°
60°
6
82°
73°
7
85°
75°
8
83°
74°
9
89°
68°
10
85°
73°
11
85°
68°
12
81°
69°
13
80°
68°
14
81°
64°
15
80°
65°
16
78°
64°
17
77°
63°
18
76°
64°
19
77°
66°
20
80°
65°
21
78°
66°
22
79°
63°
23
77°
67°
24
72°
63°
25
73°
65°
26
75°
66°
27
77°
66°
28
79°
65°
29
75°
62°
30
72°
60°
31
71°
60°
1
71°
61°
2
72°
62°
3
71°
62°
4
72°
63°
5
71°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Harwich Port
Harwich Port's August 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 60° and 73°. The average high for August is 77° with an average low of 65°. 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 Port. See also: September | October | November.
