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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Grand Cayman, NS
Content continues below
September
Average Temperature
High
30°
Feels 37
Low
28°
Feels 32
Average Precipitation
22 Days
Rain amount
193.5mm
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
31°
10
31°
11
31°
12
30°
13
31°
14
31°
15
30°
16
30°
17
30°
18
31°
19
30°
20
30°
21
30°
22
30°
23
30°
24
25
26
27
28
29
30
Forecast
Wednesday, September 9, 2026
Day
31°
Feels 37
Wind
37 km/h NE
Gust
56 km/h
Humidity
72%
P.O.P
90%
Rain
1-3 mm
Night
28°
Feels 32
Wind
18 km/h E
Gust
27 km/h
Humidity
84%
P.O.P
40%
Rain
~1 mm
Historical Averages
Sep 9
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.