S
M
T
W
T
F
S
29
43°
25°
30
53°
42°
31
52°
45°
1
49°
41°
2
41°
38°
3
49°
39°
4
56°
39°
5
51°
40°
6
50°
37°
7
50°
30°
8
40°
29°
9
44°
26°
10
54°
35°
11
56°
42°
12
49°
33°
13
54°
43°
14
73°
47°
15
66°
51°
16
65°
49°
17
56°
45°
18
49°
44°
19
54°
38°
20
46°
34°
21
42°
35°
22
51°
41°
23
51°
41°
24
49°
40°
25
49°
42°
26
51°
45°
27
49°
43°
28
51°
44°
29
54°
43°
30
51°
44°
1
51°
45°
2
52°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Wellfleet by the Sea
Wellfleet by the Sea's April 2026 forecast shows daily high temperatures ranging from 42° to 65°, with overnight lows between 34° and 49°. The average high for April is 51° 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 Wellfleet by the Sea. See also: May | June | July.