S
M
T
W
T
F
S
26
58°
42°
27
55°
50°
28
54°
40°
29
62°
36°
30
68°
50°
1
56°
47°
2
64°
49°
3
82°
49°
4
61°
52°
5
59°
54°
6
57°
52°
7
59°
46°
8
59°
45°
9
70°
46°
10
62°
50°
11
68°
51°
12
65°
50°
13
60°
52°
14
57°
48°
15
55°
45°
16
56°
46°
17
61°
40°
18
62°
47°
19
62°
52°
20
60°
50°
21
63°
55°
22
60°
53°
23
59°
51°
24
57°
49°
25
54°
46°
26
59°
47°
27
60°
48°
28
60°
47°
29
61°
47°
30
61°
46°
31
62°
48°
1
60°
47°
2
66°
52°
3
65°
50°
4
64°
50°
5
59°
46°
6
64°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Oceanside
Oceanside's May 2026 forecast shows daily high temperatures ranging from 54° to 66°, with overnight lows between 46° and 55°. The average high for May is 61° with an average low of 49°. 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 Oceanside. See also: June | July | August.
