S
M
T
W
T
F
S
26
81°
62°
27
83°
66°
28
81°
62°
29
78°
59°
30
78°
65°
31
79°
62°
1
81°
65°
2
78°
66°
3
84°
66°
4
84°
65°
5
81°
63°
6
82°
64°
7
85°
66°
8
85°
64°
9
84°
65°
10
83°
64°
11
79°
60°
12
82°
64°
13
84°
64°
14
78°
58°
15
76°
57°
16
76°
57°
17
80°
64°
18
77°
64°
19
76°
63°
20
79°
64°
21
80°
63°
22
78°
61°
23
78°
62°
24
81°
56°
25
79°
60°
26
84°
60°
27
83°
61°
28
84°
62°
29
77°
55°
30
75°
57°
31
76°
62°
1
79°
62°
2
76°
61°
3
80°
60°
4
76°
52°
5
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in London
London's August 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 52° and 66°. The average high for August is 80° with an average low of 62°. 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.