S
M
T
W
T
F
S
29
73°
48°
30
68°
50°
31
67°
60°
1
65°
55°
2
63°
53°
3
74°
50°
4
81°
48°
5
74°
53°
6
70°
54°
7
68°
51°
8
67°
53°
9
71°
59°
10
70°
56°
11
69°
56°
12
65°
54°
13
65°
53°
14
71°
51°
15
70°
52°
16
71°
54°
17
72°
55°
18
70°
55°
19
71°
54°
20
69°
54°
21
73°
53°
22
72°
50°
23
68°
48°
24
67°
49°
25
67°
48°
26
68°
49°
27
66°
47°
28
66°
47°
29
67°
48°
30
67°
48°
1
68°
49°
2
71°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in San Clemente
San Clemente's April 2026 forecast shows daily high temperatures ranging from 65° to 73°, with overnight lows between 47° and 59°. The average high for April is 69° with an average low of 52°. 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 San Clemente. See also: May | June | July.