S
M
T
W
T
F
S
26
86°
66°
27
81°
66°
28
76°
64°
29
82°
57°
30
87°
65°
31
77°
67°
1
78°
65°
2
75°
60°
3
80°
54°
4
83°
63°
5
73°
59°
6
78°
56°
7
83°
63°
8
81°
63°
9
74°
60°
10
78°
65°
11
79°
64°
12
79°
65°
13
78°
58°
14
75°
60°
15
69°
60°
16
72°
58°
17
73°
59°
18
76°
61°
19
75°
62°
20
78°
63°
21
76°
59°
22
76°
59°
23
75°
58°
24
74°
63°
25
76°
64°
26
78°
64°
27
78°
62°
28
77°
61°
29
70°
60°
30
69°
60°
31
69°
59°
1
70°
61°
2
72°
61°
3
76°
62°
4
76°
62°
5
75°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Brussels
Brussels's August 2026 forecast shows daily high temperatures ranging from 69° to 79°, with overnight lows between 58° and 65°. The average high for August is 75° with an average low of 61°. 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 Brussels. See also: September | October | November.
