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
N/A
2
80°
62°
3
88°
66°
4
82°
64°
5
79°
57°
6
76°
57°
7
78°
59°
8
77°
61°
9
76°
59°
10
79°
62°
11
80°
65°
12
80°
63°
13
79°
62°
14
76°
57°
15
74°
56°
16
73°
55°
17
72°
55°
18
70°
54°
19
69°
50°
20
68°
50°
21
67°
49°
22
68°
49°
23
68°
50°
24
72°
55°
25
73°
55°
26
73°
54°
27
72°
53°
28
71°
54°
29
72°
53°
30
73°
54°
31
73°
54°
1
71°
52°
2
69°
50°
3
66°
48°
4
66°
48°
5
67°
47°
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 66° to 88°, with overnight lows between 47° and 66°. The average high for August is 74° with an average low of 55°. 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.