S
M
T
W
T
F
S
26
71°
56°
27
73°
53°
28
75°
54°
29
74°
54°
30
75°
56°
31
80°
60°
1
79°
56°
2
75°
53°
3
74°
57°
4
78°
61°
5
78°
60°
6
77°
59°
7
72°
55°
8
71°
60°
9
71°
58°
10
72°
53°
11
72°
53°
12
73°
52°
13
71°
54°
14
70°
53°
15
72°
54°
16
74°
53°
17
72°
53°
18
71°
51°
19
73°
52°
20
74°
56°
21
75°
53°
22
75°
53°
23
74°
55°
24
74°
57°
25
75°
57°
26
74°
56°
27
73°
57°
28
74°
54°
29
68°
55°
30
67°
50°
31
67°
52°
1
68°
50°
2
67°
49°
3
68°
51°
4
67°
51°
5
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Luxembourg
Luxembourg's August 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 49° and 61°. The average high for August is 73° with an average low of 54°. 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 Luxembourg. See also: September | October | November.