S
M
T
W
T
F
S
26
72°
67°
27
74°
67°
28
76°
68°
29
76°
69°
30
75°
69°
31
76°
68°
1
75°
69°
2
75°
68°
3
76°
68°
4
76°
67°
5
75°
68°
6
73°
69°
7
70°
67°
8
70°
69°
9
74°
67°
10
76°
68°
11
76°
67°
12
75°
65°
13
74°
63°
14
72°
63°
15
71°
68°
16
73°
69°
17
76°
69°
18
78°
68°
19
78°
68°
20
77°
66°
21
77°
64°
22
75°
65°
23
73°
64°
24
72°
65°
25
72°
67°
26
74°
69°
27
76°
69°
28
77°
68°
29
77°
67°
30
75°
66°
31
76°
68°
1
77°
69°
2
77°
69°
3
76°
68°
4
77°
69°
5
76°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Newport Beach
Newport Beach's August 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 63° and 69°. The average high for August is 75° with an average low of 67°. 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 Newport Beach. See also: September | October | November.
