S
M
T
W
T
F
S
26
60°
48°
27
62°
47°
28
64°
46°
29
66°
49°
30
65°
52°
1
59°
53°
2
60°
54°
3
61°
52°
4
65°
49°
5
67°
50°
6
69°
51°
7
68°
52°
8
69°
51°
9
78°
53°
10
80°
54°
11
75°
53°
12
74°
52°
13
76°
51°
14
75°
53°
15
72°
51°
16
72°
51°
17
71°
50°
18
75°
54°
19
76°
54°
20
75°
53°
21
73°
54°
22
73°
54°
23
75°
55°
24
75°
55°
25
74°
54°
26
73°
54°
27
71°
53°
28
68°
54°
29
68°
54°
30
71°
53°
31
70°
54°
1
73°
55°
2
72°
54°
3
73°
55°
4
71°
54°
5
69°
54°
6
68°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oceano Beach
Oceano Beach's May 2026 forecast shows daily high temperatures ranging from 65° to 80°, with overnight lows between 49° and 55°. The average high for May is 72° with an average low of 53°. 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 Oceano Beach. See also: June | July | August.