S
M
T
W
T
F
S
26
69°
53°
27
70°
53°
28
70°
54°
29
69°
53°
30
70°
54°
1
70°
54°
2
69°
53°
3
70°
53°
4
70°
54°
5
69°
55°
6
71°
55°
7
71°
54°
8
70°
54°
9
70°
55°
10
71°
55°
11
70°
54°
12
70°
55°
13
69°
54°
14
68°
55°
15
71°
54°
16
71°
53°
17
69°
54°
18
70°
51°
19
70°
51°
20
69°
52°
21
67°
51°
22
69°
55°
23
70°
54°
24
71°
50°
25
70°
52°
26
69°
51°
27
67°
52°
28
68°
49°
29
68°
51°
30
69°
52°
31
70°
55°
1
70°
56°
2
71°
56°
3
71°
55°
4
70°
55°
5
70°
54°
6
69°
57°
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 67° to 71°, with overnight lows between 49° and 57°. The average high for May is 70° 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.