S
M
T
W
T
F
S
26
61°
52°
27
62°
49°
28
65°
46°
29
64°
46°
30
64°
50°
1
64°
56°
2
70°
57°
3
67°
54°
4
67°
53°
5
67°
55°
6
69°
54°
7
78°
56°
8
80°
55°
9
78°
56°
10
77°
55°
11
74°
57°
12
76°
57°
13
73°
56°
14
75°
57°
15
74°
54°
16
73°
56°
17
76°
57°
18
77°
58°
19
77°
58°
20
76°
57°
21
77°
58°
22
77°
58°
23
78°
59°
24
78°
59°
25
77°
58°
26
76°
59°
27
75°
58°
28
70°
57°
29
69°
56°
30
69°
57°
31
70°
58°
1
71°
59°
2
73°
58°
3
72°
59°
4
71°
58°
5
70°
58°
6
70°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Clemente
San Clemente's May 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 53° and 59°. The average high for May is 74° with an average low of 57°. 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 San Clemente. See also: June | July | August.
