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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Sanibel Causeway, FL
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September
Average Temperature
High
31°
Feels 36
Low
25°
Feels 27
Average Precipitation
19 Days
Rain amount
159mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
31°
16
31°
17
31°
18
31°
19
30°
20
30°
21
29°
22
29°
23
29°
24
30°
25
30°
26
29°
27
30°
28
30°
29
30°
30
Forecast
Tuesday, September 15, 2026
Day
31°
Feels 36
Wind
13 km/h E
Gust
20 km/h
Humidity
62%
P.O.P
40%
Rain
<1 mm
Night
25°
Feels 26
Wind
18 km/h NE
Gust
27 km/h
Humidity
92%
P.O.P
40%
Rain
~1 mm
Historical Averages
Sep 15
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.