S
M
T
W
T
F
S
26
73°
37°
27
73°
37°
28
70°
45°
29
73°
50°
30
72°
41°
1
77°
37°
2
81°
46°
3
77°
54°
4
68°
48°
5
64°
50°
6
57°
48°
7
64°
48°
8
72°
45°
9
75°
46°
10
68°
50°
11
61°
46°
12
57°
41°
13
63°
39°
14
57°
45°
15
54°
41°
16
57°
39°
17
64°
41°
18
63°
46°
19
64°
45°
20
70°
52°
21
77°
46°
22
82°
48°
23
86°
52°
24
90°
54°
25
90°
57°
26
90°
62°
27
90°
60°
28
86°
58°
29
88°
59°
30
88°
62°
31
79°
60°
1
77°
59°
2
78°
59°
3
77°
58°
4
73°
56°
5
72°
56°
6
77°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Basel
Basel's May 2026 forecast shows daily high temperatures ranging from 72° to 90°, with overnight lows between 56° and 62°. The average high for May is 81° with an average low of 59°. 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 Basel. See also: June | July | August.
