S
M
T
W
T
F
S
30
77°
66°
31
75°
64°
1
78°
67°
2
80°
66°
3
80°
66°
4
79°
69°
5
79°
70°
6
80°
65°
7
79°
65°
8
75°
66°
9
76°
67°
10
75°
69°
11
75°
66°
12
76°
67°
13
77°
68°
14
76°
67°
15
77°
71°
16
77°
67°
17
76°
69°
18
79°
72°
19
80°
68°
20
76°
69°
21
Hist. Avg.
80°
63°
22
Hist. Avg.
80°
63°
23
Hist. Avg.
80°
63°
24
Hist. Avg.
80°
64°
25
Hist. Avg.
80°
64°
26
Hist. Avg.
80°
64°
27
Hist. Avg.
80°
64°
28
Hist. Avg.
81°
64°
29
Hist. Avg.
81°
64°
30
Hist. Avg.
81°
65°
1
Hist. Avg.
81°
65°
2
Hist. Avg.
81°
65°
3
Hist. Avg.
81°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Whitsundays
Whitsundays's September 2026 forecast shows daily high temperatures ranging from 75° to 80°, with overnight lows between 64° and 72°. The average high for September is 77° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Whitsundays. See also: October | November | December.