S
M
T
W
T
F
S
26
82°
66°
27
80°
68°
28
79°
68°
29
79°
69°
30
80°
67°
31
80°
67°
1
82°
66°
2
81°
69°
3
80°
69°
4
78°
68°
5
79°
68°
6
81°
67°
7
82°
68°
8
81°
67°
9
80°
68°
10
81°
68°
11
80°
67°
12
80°
68°
13
81°
67°
14
73°
63°
15
78°
64°
16
78°
64°
17
75°
61°
18
76°
62°
19
78°
65°
20
79°
63°
21
79°
64°
22
81°
65°
23
81°
65°
24
80°
64°
25
81°
65°
26
81°
64°
27
80°
65°
28
81°
65°
29
80°
64°
30
81°
65°
31
81°
65°
1
80°
64°
2
81°
64°
3
78°
63°
4
77°
64°
5
77°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Oceanside
Oceanside's August 2026 forecast shows daily high temperatures ranging from 73° to 82°, with overnight lows between 61° and 69°. The average high for August is 80° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Oceanside. See also: September | October | November.
