S
M
T
W
T
F
S
26
85°
52°
27
88°
54°
28
87°
55°
29
86°
53°
30
88°
55°
31
85°
53°
1
83°
50°
2
87°
53°
3
89°
55°
4
89°
55°
5
88°
54°
6
89°
55°
7
88°
55°
8
88°
54°
9
89°
56°
10
81°
49°
11
82°
48°
12
82°
48°
13
83°
49°
14
82°
48°
15
81°
51°
16
82°
54°
17
87°
54°
18
88°
53°
19
89°
48°
20
88°
49°
21
87°
47°
22
83°
48°
23
80°
52°
24
86°
52°
25
86°
48°
26
85°
52°
27
85°
51°
28
84°
45°
29
79°
49°
30
80°
49°
31
84°
45°
1
83°
44°
2
77°
47°
3
79°
50°
4
83°
49°
5
83°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Stuart Island
Stuart Island's August 2026 forecast shows daily high temperatures ranging from 77° to 89°, with overnight lows between 44° and 56°. The average high for August is 85° with an average low of 51°. 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 Stuart Island. See also: September | October | November.