S
M
T
W
T
F
S
26
77°
63°
27
79°
59°
28
86°
59°
29
90°
57°
30
79°
57°
31
75°
54°
1
75°
46°
2
82°
52°
3
90°
59°
4
82°
61°
5
75°
57°
6
75°
48°
7
78°
48°
8
82°
51°
9
88°
58°
10
86°
58°
11
88°
60°
12
90°
63°
13
83°
58°
14
80°
58°
15
79°
57°
16
76°
55°
17
76°
56°
18
77°
55°
19
68°
51°
20
67°
50°
21
66°
49°
22
67°
50°
23
67°
50°
24
71°
55°
25
72°
55°
26
72°
53°
27
71°
53°
28
72°
54°
29
71°
54°
30
72°
53°
31
72°
54°
1
71°
53°
2
69°
49°
3
66°
48°
4
66°
48°
5
67°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Henley-On-Thames
Henley-On-Thames's August 2026 forecast shows daily high temperatures ranging from 66° to 90°, with overnight lows between 48° and 63°. The average high for August is 74° with an average low of 53°. 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 Henley-On-Thames. See also: September | October | November.