S
M
T
W
T
F
S
26
79°
55°
27
76°
54°
28
75°
54°
29
76°
53°
30
69°
52°
31
71°
53°
1
76°
53°
2
70°
52°
3
76°
53°
4
77°
52°
5
70°
52°
6
68°
51°
7
72°
53°
8
77°
54°
9
79°
53°
10
75°
51°
11
72°
50°
12
67°
50°
13
67°
49°
14
69°
51°
15
76°
52°
16
76°
52°
17
67°
43°
18
71°
44°
19
74°
44°
20
75°
48°
21
76°
51°
22
77°
49°
23
74°
40°
24
66°
43°
25
67°
49°
26
65°
49°
27
73°
45°
28
66°
48°
29
70°
46°
30
70°
45°
31
64°
38°
1
63°
42°
2
68°
45°
3
72°
46°
4
73°
39°
5
63°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Jarvis Bay
Jarvis Bay's August 2026 forecast shows daily high temperatures ranging from 63° to 79°, with overnight lows between 38° and 55°. The average high for August is 72° with an average low of 49°. 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 Jarvis Bay. See also: September | October | November.