S
M
T
W
T
F
S
26
83°
77°
27
83°
77°
28
84°
78°
29
84°
77°
30
84°
78°
1
78°
62°
2
76°
58°
3
79°
64°
4
82°
72°
5
83°
76°
6
81°
69°
7
75°
73°
8
82°
75°
9
83°
77°
10
85°
76°
11
81°
72°
12
83°
74°
13
82°
77°
14
81°
78°
15
82°
76°
16
81°
77°
17
82°
75°
18
83°
78°
19
82°
76°
20
80°
77°
21
82°
76°
22
85°
77°
23
82°
78°
24
81°
77°
25
80°
78°
26
81°
78°
27
80°
74°
28
80°
74°
29
81°
75°
30
81°
74°
31
82°
76°
1
82°
75°
2
83°
76°
3
81°
75°
4
82°
78°
5
83°
79°
6
84°
80°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Aransas
Port Aransas's May 2026 forecast shows daily high temperatures ranging from 75° to 85°, with overnight lows between 69° and 80°. The average high for May is 82° with an average low of 76°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Port Aransas. See also: June | July | August.