S
M
T
W
T
F
S
26
79°
66°
27
81°
63°
28
84°
66°
29
93°
68°
30
82°
68°
31
77°
63°
1
79°
61°
2
81°
61°
3
84°
64°
4
86°
66°
5
79°
63°
6
72°
59°
7
79°
57°
8
82°
59°
9
86°
64°
10
79°
63°
11
75°
61°
12
86°
64°
13
N/A
14
91°
65°
15
81°
60°
16
78°
61°
17
78°
63°
18
77°
61°
19
77°
60°
20
74°
60°
21
72°
58°
22
74°
58°
23
71°
57°
24
70°
56°
25
72°
57°
26
68°
52°
27
67°
49°
28
67°
50°
29
68°
54°
30
68°
54°
31
69°
53°
1
70°
51°
2
68°
48°
3
67°
48°
4
69°
53°
5
71°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in London
London's August 2026 forecast shows daily high temperatures ranging from 67° to 91°, with overnight lows between 48° and 65°. The average high for August is 72° with an average low of 56°. 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 London. See also: September | October | November.