S
M
T
W
T
F
S
26
58°
50°
27
60°
46°
28
65°
50°
29
69°
53°
30
64°
50°
1
60°
49°
2
58°
53°
3
59°
52°
4
60°
49°
5
60°
50°
6
68°
48°
7
65°
53°
8
64°
51°
9
64°
49°
10
65°
50°
11
56°
51°
12
55°
49°
13
63°
54°
14
63°
48°
15
61°
49°
16
65°
48°
17
61°
48°
18
68°
52°
19
75°
52°
20
75°
50°
21
67°
50°
22
64°
52°
23
65°
54°
24
64°
55°
25
65°
54°
26
66°
53°
27
66°
56°
28
66°
54°
29
68°
53°
30
67°
52°
31
68°
53°
1
71°
57°
2
71°
57°
3
70°
56°
4
70°
57°
5
70°
57°
6
70°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cayucos
Cayucos's May 2026 forecast shows daily high temperatures ranging from 64° to 75°, with overnight lows between 50° and 57°. The average high for May is 68° with an average low of 54°. 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 Cayucos. See also: June | July | August.