S
M
T
W
T
F
S
29
50°
36°
30
45°
36°
31
48°
34°
1
48°
32°
2
57°
32°
3
59°
45°
4
62°
45°
5
72°
47°
6
65°
42°
7
72°
46°
8
69°
44°
9
64°
43°
10
57°
42°
11
53°
37°
12
56°
39°
13
58°
43°
14
59°
43°
15
61°
42°
16
54°
34°
17
61°
37°
18
61°
38°
19
55°
36°
20
55°
36°
21
56°
35°
22
56°
37°
23
57°
36°
24
56°
36°
25
57°
37°
26
59°
37°
27
62°
38°
28
66°
38°
29
66°
40°
30
64°
39°
1
63°
40°
2
64°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Basel
Basel's April 2026 forecast shows daily high temperatures ranging from 53° to 72°, with overnight lows between 34° and 47°. The average high for April is 61° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Basel. See also: May | June | July.