S
M
T
W
T
F
S
26
52°
39°
27
46°
39°
28
52°
32°
29
54°
28°
30
50°
28°
1
54°
28°
2
70°
28°
3
70°
43°
4
59°
36°
5
48°
27°
6
45°
27°
7
59°
25°
8
72°
32°
9
57°
39°
10
59°
37°
11
68°
30°
12
68°
48°
13
73°
36°
14
77°
52°
15
84°
48°
16
75°
45°
17
72°
50°
18
61°
48°
19
50°
36°
20
61°
30°
21
66°
37°
22
54°
48°
23
63°
45°
24
82°
45°
25
88°
57°
26
90°
59°
27
91°
59°
28
86°
59°
29
88°
61°
30
82°
59°
31
74°
60°
1
74°
58°
2
80°
60°
3
82°
61°
4
77°
59°
5
78°
56°
6
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Martin
St. Martin's May 2026 forecast shows daily high temperatures ranging from 74° to 82°, with overnight lows between 56° and 61°. The average high for May is 78° with an average low of 59°. 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 St. Martin. See also: June | July | August.