S
M
T
W
T
F
S
26
68°
54°
27
70°
47°
28
70°
45°
29
71°
44°
30
71°
48°
1
71°
59°
2
71°
61°
3
70°
59°
4
70°
55°
5
69°
51°
6
71°
49°
7
70°
49°
8
72°
62°
9
71°
62°
10
72°
54°
11
71°
56°
12
70°
54°
13
73°
53°
14
72°
56°
15
73°
61°
16
72°
63°
17
71°
55°
18
70°
54°
19
77°
47°
20
77°
48°
21
73°
60°
22
70°
62°
23
71°
62°
24
71°
54°
25
71°
56°
26
70°
61°
27
69°
55°
28
70°
49°
29
71°
54°
30
72°
57°
31
74°
58°
1
74°
59°
2
72°
60°
3
73°
59°
4
74°
61°
5
73°
62°
6
71°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Oceanside
South Oceanside's May 2026 forecast shows daily high temperatures ranging from 71° to 74°, with overnight lows between 57° and 64°. The average high for May is 73° with an average low of 60°. 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 South Oceanside. See also: June | July | August.
