S
M
T
W
T
F
S
30
87°
79°
31
88°
77°
1
87°
78°
2
87°
77°
3
88°
78°
4
85°
79°
5
88°
77°
6
88°
77°
7
Hist. Avg.
87°
75°
8
Hist. Avg.
87°
75°
9
Hist. Avg.
87°
75°
10
Hist. Avg.
87°
75°
11
Hist. Avg.
87°
75°
12
Hist. Avg.
87°
75°
13
Hist. Avg.
87°
75°
14
Hist. Avg.
87°
75°
15
Hist. Avg.
87°
75°
16
Hist. Avg.
87°
75°
17
Hist. Avg.
87°
75°
18
Hist. Avg.
87°
75°
19
Hist. Avg.
87°
75°
20
Hist. Avg.
87°
75°
21
Hist. Avg.
87°
75°
22
Hist. Avg.
87°
75°
23
Hist. Avg.
87°
75°
24
Hist. Avg.
87°
75°
25
Hist. Avg.
87°
75°
26
Hist. Avg.
87°
75°
27
Hist. Avg.
87°
75°
28
Hist. Avg.
87°
75°
29
Hist. Avg.
87°
75°
30
Hist. Avg.
87°
74°
1
Hist. Avg.
87°
74°
2
Hist. Avg.
87°
74°
3
Hist. Avg.
87°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Singapore
Singapore's September 2026 forecast shows daily high temperatures ranging from 85° to 88°, with overnight lows between 77° and 79°. The average high for September is 87° with an average low of 78°. 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 Singapore. See also: October | November | December.
