S
M
T
W
T
F
S
26
63°
37°
27
66°
41°
28
68°
45°
29
68°
46°
30
70°
46°
1
77°
45°
2
75°
55°
3
63°
55°
4
64°
54°
5
N/A
6
55°
45°
7
62°
46°
8
66°
49°
9
71°
53°
10
68°
55°
11
66°
51°
12
60°
48°
13
58°
45°
14
60°
48°
15
63°
51°
16
65°
49°
17
64°
50°
18
65°
50°
19
61°
47°
20
60°
46°
21
60°
46°
22
61°
47°
23
61°
47°
24
63°
51°
25
66°
51°
26
69°
54°
27
70°
54°
28
64°
52°
29
66°
48°
30
66°
51°
31
71°
55°
1
71°
53°
2
70°
54°
3
71°
52°
4
70°
54°
5
72°
56°
6
72°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Zaventem
Zaventem's May 2026 forecast shows daily high temperatures ranging from 55° to 72°, with overnight lows between 45° and 57°. The average high for May is 65° 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 Zaventem. See also: June | July | August.