S
M
T
W
T
F
S
26
93°
68°
27
90°
70°
28
90°
70°
29
90°
66°
30
86°
68°
31
72°
61°
1
82°
61°
2
82°
59°
3
82°
61°
4
70°
52°
5
77°
46°
6
79°
57°
7
77°
54°
8
77°
50°
9
81°
63°
10
82°
55°
11
84°
63°
12
86°
61°
13
78°
61°
14
81°
66°
15
80°
61°
16
80°
54°
17
80°
62°
18
80°
63°
19
79°
59°
20
80°
58°
21
79°
62°
22
78°
57°
23
77°
56°
24
76°
56°
25
79°
58°
26
78°
57°
27
82°
62°
28
81°
62°
29
82°
63°
30
84°
65°
31
84°
63°
1
83°
62°
2
82°
63°
3
83°
63°
4
83°
62°
5
82°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in St. Martin
St. Martin's August 2026 forecast shows daily high temperatures ranging from 76° to 84°, with overnight lows between 54° and 66°. The average high for August is 80° with an average low of 61°. 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 St. Martin. See also: September | October | November.