S
M
T
W
T
F
S
26
89°
73°
27
91°
72°
28
89°
72°
29
91°
73°
30
92°
74°
31
92°
76°
1
93°
76°
2
93°
74°
3
92°
74°
4
94°
75°
5
93°
75°
6
94°
74°
7
94°
76°
8
93°
75°
9
93°
75°
10
94°
74°
11
93°
75°
12
93°
74°
13
91°
74°
14
91°
75°
15
94°
75°
16
92°
74°
17
93°
75°
18
94°
74°
19
92°
75°
20
92°
75°
21
94°
74°
22
94°
75°
23
93°
74°
24
92°
75°
25
93°
74°
26
92°
75°
27
93°
75°
28
93°
74°
29
92°
74°
30
92°
73°
31
93°
72°
1
94°
74°
2
93°
73°
3
94°
74°
4
91°
74°
5
91°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Nuevo Vallarta
Nuevo Vallarta's August 2026 forecast shows daily high temperatures ranging from 89° to 94°, with overnight lows between 72° and 76°. The average high for August is 93° with an average low of 74°. 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 Nuevo Vallarta. See also: September | October | November.