S
M
T
W
T
F
S
26
88°
81°
27
89°
80°
28
88°
81°
29
87°
80°
30
87°
79°
31
89°
79°
1
88°
78°
2
89°
78°
3
89°
80°
4
88°
79°
5
88°
81°
6
87°
79°
7
89°
79°
8
88°
80°
9
88°
79°
10
89°
79°
11
88°
80°
12
88°
78°
13
87°
79°
14
87°
79°
15
86°
80°
16
86°
79°
17
87°
80°
18
87°
81°
19
86°
81°
20
Hist. Avg.
90°
80°
21
Hist. Avg.
90°
80°
22
Hist. Avg.
90°
80°
23
Hist. Avg.
90°
80°
24
Hist. Avg.
90°
80°
25
Hist. Avg.
90°
80°
26
Hist. Avg.
90°
80°
27
Hist. Avg.
90°
80°
28
Hist. Avg.
90°
80°
29
Hist. Avg.
90°
80°
30
Hist. Avg.
90°
79°
31
Hist. Avg.
90°
79°
1
Hist. Avg.
90°
79°
2
Hist. Avg.
89°
79°
3
Hist. Avg.
89°
79°
4
Hist. Avg.
89°
79°
5
Hist. Avg.
89°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Port Aransas
Port Aransas's August 2026 forecast shows daily high temperatures ranging from 86° to 89°, with overnight lows between 78° and 81°. The average high for August is 88° with an average low of 80°. 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 Port Aransas. See also: September | October | November.