S
M
T
W
T
F
S
26
88°
77°
27
88°
75°
28
93°
77°
29
93°
81°
30
95°
75°
31
90°
75°
1
91°
81°
2
88°
73°
3
88°
75°
4
88°
75°
5
84°
75°
6
86°
77°
7
90°
77°
8
84°
77°
9
88°
75°
10
91°
73°
11
93°
75°
12
97°
75°
13
99°
75°
14
93°
75°
15
95°
77°
16
93°
77°
17
100°
77°
18
99°
81°
19
95°
81°
20
93°
79°
21
91°
79°
22
93°
72°
23
90°
76°
24
93°
79°
25
90°
77°
26
86°
77°
27
85°
74°
28
88°
73°
29
82°
75°
30
87°
75°
31
88°
75°
1
90°
75°
2
91°
75°
3
92°
74°
4
91°
75°
5
89°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in James Island
James Island's August 2026 forecast shows daily high temperatures ranging from 82° to 92°, with overnight lows between 74° and 75°. The average high for August is 89° with an average low of 75°. 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 James Island. See also: September | October | November.
