S
M
T
W
T
F
S
27
68°
46°
28
72°
45°
29
75°
45°
30
79°
46°
1
82°
48°
2
82°
52°
3
77°
56°
4
63°
48°
5
52°
45°
6
54°
45°
7
57°
43°
8
61°
45°
9
64°
39°
10
72°
39°
11
75°
41°
12
66°
52°
13
70°
51°
14
75°
48°
15
70°
45°
16
68°
39°
17
70°
41°
18
72°
43°
19
77°
43°
20
72°
57°
21
72°
55°
22
63°
50°
23
64°
43°
24
64°
39°
25
72°
54°
26
66°
52°
27
70°
50°
28
64°
57°
29
73°
55°
30
86°
54°
31
90°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Basel
Basel's May 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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.