S
M
T
W
T
F
S
26
56°
50°
27
59°
46°
28
61°
46°
29
62°
48°
30
60°
52°
1
59°
53°
2
61°
55°
3
62°
51°
4
63°
54°
5
62°
54°
6
61°
53°
7
66°
49°
8
65°
48°
9
68°
49°
10
64°
51°
11
68°
50°
12
64°
49°
13
63°
48°
14
64°
49°
15
63°
50°
16
66°
52°
17
67°
53°
18
67°
52°
19
66°
53°
20
68°
53°
21
67°
51°
22
66°
51°
23
67°
53°
24
68°
53°
25
68°
52°
26
67°
51°
27
63°
52°
28
61°
52°
29
62°
53°
30
62°
52°
31
63°
53°
1
65°
53°
2
67°
52°
3
65°
53°
4
62°
52°
5
62°
51°
6
61°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Seaside-Monterey
Seaside-Monterey's May 2026 forecast shows daily high temperatures ranging from 61° to 68°, with overnight lows between 48° and 55°. The average high for May is 65° with an average low of 52°. 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 Seaside-Monterey. See also: June | July | August.