S
M
T
W
T
F
S
29
48°
34°
30
46°
34°
31
50°
37°
1
52°
34°
2
54°
38°
3
56°
51°
4
60°
51°
5
58°
39°
6
56°
37°
7
63°
44°
8
61°
44°
9
56°
41°
10
54°
39°
11
53°
39°
12
54°
39°
13
56°
41°
14
57°
42°
15
57°
43°
16
52°
38°
17
57°
45°
18
55°
44°
19
53°
40°
20
52°
37°
21
53°
42°
22
53°
38°
23
54°
38°
24
53°
38°
25
55°
44°
26
56°
44°
27
60°
43°
28
62°
47°
29
63°
42°
30
61°
44°
1
64°
48°
2
63°
47°
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 52° to 64°, with overnight lows between 37° and 51°. The average high for April is 57° with an average low of 42°. 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.