S
M
T
W
T
F
S
26
82°
67°
27
83°
69°
28
85°
69°
29
85°
68°
30
87°
69°
31
87°
68°
1
84°
69°
2
88°
70°
3
89°
70°
4
88°
69°
5
88°
70°
6
89°
70°
7
90°
69°
8
88°
68°
9
82°
63°
10
82°
66°
11
86°
69°
12
88°
69°
13
88°
70°
14
89°
70°
15
88°
69°
16
85°
67°
17
87°
62°
18
87°
61°
19
87°
62°
20
88°
64°
21
89°
66°
22
88°
67°
23
88°
67°
24
85°
66°
25
82°
64°
26
82°
65°
27
81°
62°
28
81°
64°
29
82°
61°
30
81°
62°
31
85°
65°
1
87°
63°
2
86°
64°
3
85°
65°
4
84°
58°
5
80°
64°
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 80° to 90°, with overnight lows between 58° and 70°. The average high for August is 86° with an average low of 66°. 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.