S
M
T
W
T
F
S
26
90°
78°
27
91°
78°
28
90°
77°
29
91°
78°
30
91°
78°
31
88°
77°
1
89°
78°
2
91°
78°
3
88°
77°
4
91°
77°
5
90°
78°
6
88°
77°
7
91°
74°
8
90°
76°
9
91°
77°
10
92°
76°
11
93°
77°
12
94°
76°
13
93°
76°
14
93°
75°
15
92°
77°
16
93°
76°
17
93°
75°
18
92°
75°
19
92°
74°
20
91°
76°
21
88°
76°
22
88°
75°
23
89°
76°
24
90°
76°
25
92°
75°
26
92°
76°
27
91°
76°
28
92°
75°
29
91°
74°
30
88°
75°
31
87°
74°
1
88°
73°
2
88°
71°
3
87°
70°
4
87°
71°
5
88°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Long Beach
Long Beach's August 2026 forecast shows daily high temperatures ranging from 87° to 94°, with overnight lows between 70° and 78°. The average high for August is 90° with an average low of 76°. 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 Long Beach. See also: September | October | November.