S
M
T
W
T
F
S
30
87°
74°
31
86°
74°
1
87°
73°
2
86°
73°
3
86°
74°
4
87°
74°
5
86°
73°
6
87°
72°
7
86°
73°
8
87°
72°
9
86°
73°
10
87°
74°
11
87°
75°
12
87°
72°
13
85°
73°
14
85°
72°
15
85°
73°
16
Hist. Avg.
85°
75°
17
Hist. Avg.
85°
75°
18
Hist. Avg.
85°
75°
19
Hist. Avg.
85°
75°
20
Hist. Avg.
85°
75°
21
Hist. Avg.
85°
75°
22
Hist. Avg.
85°
75°
23
Hist. Avg.
85°
75°
24
Hist. Avg.
85°
75°
25
Hist. Avg.
85°
75°
26
Hist. Avg.
85°
75°
27
Hist. Avg.
85°
75°
28
Hist. Avg.
85°
75°
29
Hist. Avg.
85°
75°
30
Hist. Avg.
85°
75°
1
Hist. Avg.
85°
75°
2
Hist. Avg.
85°
74°
3
Hist. Avg.
85°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Po'ipu
Po'ipu's September 2026 forecast shows daily high temperatures ranging from 85° to 87°, with overnight lows between 72° and 75°. The average high for September is 86° with an average low of 73°. 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 Po'ipu. See also: October | November | December.