S
M
T
W
T
F
S
26
76°
60°
27
77°
58°
28
75°
55°
29
72°
57°
30
71°
53°
31
72°
57°
1
71°
60°
2
72°
59°
3
73°
61°
4
71°
56°
5
71°
53°
6
72°
58°
7
75°
59°
8
77°
63°
9
77°
58°
10
76°
57°
11
75°
53°
12
72°
56°
13
73°
61°
14
74°
60°
15
77°
59°
16
76°
59°
17
75°
55°
18
70°
58°
19
70°
56°
20
Hist. Avg.
71°
53°
21
Hist. Avg.
71°
53°
22
Hist. Avg.
71°
53°
23
Hist. Avg.
71°
53°
24
Hist. Avg.
71°
53°
25
Hist. Avg.
71°
53°
26
Hist. Avg.
71°
53°
27
Hist. Avg.
70°
52°
28
Hist. Avg.
70°
52°
29
Hist. Avg.
70°
52°
30
Hist. Avg.
70°
52°
31
Hist. Avg.
70°
52°
1
Hist. Avg.
70°
52°
2
Hist. Avg.
70°
52°
3
Hist. Avg.
70°
52°
4
Hist. Avg.
70°
52°
5
Hist. Avg.
70°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Brussels
Brussels's August 2026 forecast shows daily high temperatures ranging from 70° to 77°, with overnight lows between 53° and 63°. The average high for August is 74° with an average low of 58°. 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.