S
M
T
W
T
F
S
26
66°
41°
27
66°
45°
28
68°
48°
29
64°
45°
30
63°
41°
1
70°
43°
2
75°
48°
3
63°
50°
4
59°
46°
5
59°
50°
6
54°
46°
7
55°
45°
8
63°
46°
9
70°
46°
10
70°
52°
11
54°
39°
12
48°
36°
13
54°
41°
14
52°
41°
15
54°
41°
16
52°
37°
17
59°
47°
18
59°
40°
19
57°
52°
20
66°
48°
21
70°
47°
22
74°
51°
23
77°
54°
24
74°
52°
25
73°
53°
26
76°
54°
27
74°
54°
28
75°
52°
29
74°
53°
30
65°
48°
31
63°
47°
1
62°
47°
2
62°
46°
3
63°
46°
4
65°
50°
5
64°
55°
6
67°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Luxembourg
Luxembourg's May 2026 forecast shows daily high temperatures ranging from 57° to 77°, with overnight lows between 40° and 55°. The average high for May is 68° with an average low of 50°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Luxembourg. See also: June | July | August.
