S
M
T
W
T
F
S
26
94°
71°
27
96°
73°
28
95°
71°
29
95°
75°
30
96°
73°
31
97°
73°
1
91°
71°
2
96°
64°
3
98°
62°
4
97°
73°
5
94°
74°
6
97°
75°
7
97°
74°
8
96°
69°
9
97°
69°
10
97°
72°
11
97°
75°
12
99°
75°
13
99°
75°
14
97°
74°
15
97°
76°
16
98°
72°
17
101°
69°
18
100°
66°
19
100°
69°
20
102°
72°
21
102°
73°
22
103°
69°
23
105°
69°
24
104°
71°
25
102°
67°
26
103°
74°
27
95°
71°
28
96°
72°
29
98°
73°
30
99°
74°
31
95°
70°
1
96°
68°
2
95°
67°
3
94°
68°
4
96°
69°
5
94°
68°
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 94° to 103°, with overnight lows between 67° and 74°. The average high for August is 96° with an average low of 70°. 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.