S
M
T
W
T
F
S
26
73°
58°
27
74°
59°
28
74°
59°
29
73°
58°
30
74°
59°
31
74°
59°
1
73°
58°
2
73°
59°
3
74°
59°
4
74°
58°
5
73°
58°
6
74°
59°
7
74°
60°
8
75°
59°
9
75°
60°
10
74°
60°
11
75°
59°
12
74°
59°
13
74°
58°
14
75°
59°
15
74°
58°
16
73°
58°
17
71°
57°
18
72°
58°
19
72°
57°
20
73°
58°
21
75°
59°
22
75°
58°
23
74°
57°
24
75°
55°
25
71°
52°
26
70°
51°
27
71°
51°
28
70°
52°
29
70°
56°
30
70°
57°
31
72°
57°
1
74°
55°
2
69°
51°
3
69°
54°
4
70°
55°
5
72°
55°
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 69° to 75°, with overnight lows between 51° and 60°. The average high for August is 73° with an average low of 57°. 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.