S
M
T
W
T
F
S
26
78°
69°
27
76°
70°
28
77°
69°
29
78°
70°
30
78°
69°
31
78°
70°
1
76°
69°
2
77°
70°
3
76°
69°
4
77°
69°
5
77°
67°
6
76°
68°
7
78°
68°
8
78°
68°
9
78°
68°
10
78°
68°
11
77°
68°
12
77°
67°
13
77°
68°
14
77°
68°
15
78°
68°
16
79°
69°
17
76°
67°
18
78°
70°
19
80°
70°
20
79°
70°
21
78°
68°
22
76°
67°
23
78°
66°
24
76°
68°
25
78°
66°
26
77°
68°
27
78°
69°
28
74°
65°
29
73°
69°
30
74°
68°
31
70°
69°
1
70°
69°
2
71°
68°
3
71°
69°
4
74°
69°
5
75°
68°
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 80°, with overnight lows between 65° and 70°. The average high for August is 76° with an average low of 68°. 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.
