S
M
T
W
T
F
S
26
76°
55°
27
74°
53°
28
74°
54°
29
66°
55°
30
66°
52°
31
71°
53°
1
68°
54°
2
66°
53°
3
64°
49°
4
64°
49°
5
65°
55°
6
69°
56°
7
73°
57°
8
69°
55°
9
69°
59°
10
70°
59°
11
67°
59°
12
69°
62°
13
69°
60°
14
71°
58°
15
69°
57°
16
69°
57°
17
70°
57°
18
71°
57°
19
69°
56°
20
71°
55°
21
71°
57°
22
75°
57°
23
76°
56°
24
71°
56°
25
72°
58°
26
85°
61°
27
87°
62°
28
80°
59°
29
74°
55°
30
68°
58°
31
66°
55°
1
66°
51°
2
69°
53°
3
68°
56°
4
70°
55°
5
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Pismo Beach
Pismo Beach's August 2026 forecast shows daily high temperatures ranging from 66° to 80°, with overnight lows between 51° and 59°. The average high for August is 70° with an average low of 55°. 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 Pismo Beach. See also: September | October | November.