S
M
T
W
T
F
S
26
90°
81°
27
89°
82°
28
89°
83°
29
90°
83°
30
89°
82°
31
90°
82°
1
89°
82°
2
87°
81°
3
91°
83°
4
90°
82°
5
91°
84°
6
90°
82°
7
90°
81°
8
89°
82°
9
88°
81°
10
89°
83°
11
89°
81°
12
88°
81°
13
90°
82°
14
90°
81°
15
89°
80°
16
91°
82°
17
87°
81°
18
86°
82°
19
88°
82°
20
89°
81°
21
89°
82°
22
88°
82°
23
88°
81°
24
89°
82°
25
90°
82°
26
89°
81°
27
90°
82°
28
90°
82°
29
89°
81°
30
90°
82°
31
90°
82°
1
89°
81°
2
87°
81°
3
88°
80°
4
90°
81°
5
89°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Port Aransas
Port Aransas's August 2026 forecast shows daily high temperatures ranging from 86° to 91°, with overnight lows between 80° and 84°. The average high for August is 89° with an average low of 82°. 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.