S
M
T
W
T
F
S
26
82°
71°
27
82°
72°
28
80°
73°
29
80°
74°
30
77°
74°
1
79°
66°
2
71°
63°
3
72°
66°
4
75°
64°
5
78°
68°
6
82°
74°
7
80°
75°
8
81°
71°
9
78°
67°
10
77°
71°
11
75°
70°
12
77°
71°
13
80°
71°
14
84°
73°
15
82°
72°
16
82°
71°
17
83°
74°
18
83°
76°
19
85°
77°
20
85°
76°
21
83°
77°
22
83°
78°
23
83°
75°
24
82°
72°
25
78°
71°
26
82°
74°
27
85°
75°
28
80°
73°
29
86°
78°
30
86°
79°
31
86°
76°
1
89°
75°
2
81°
73°
3
84°
74°
4
83°
72°
5
84°
71°
6
85°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Sulphur
Port Sulphur's May 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 71° and 79°. The average high for May is 84° 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 May weather will actually feel in Port Sulphur. See also: June | July | August.
