Weather in Caribbean in September

Typical Weather in September

September temperatures in the Caribbean range from an average low of 77.4 degrees to an average high of 87.7 degrees . During the month of September, it rains an average of 11.6 days , with an average total rainfall of about 6.5 inches . Nevertheless, all precipitation, no matter how slight, is included in these tables.

 

September Weather in the Caribbean: Key Facts
Monthly Averages
High Low Rainfall
(inches)
No. of Days
with Rain
87.7° F 77.4° F 6.54545 11.57143

 

Temperature

During the early morning hours of an average September day in the Caribbean, you can expect the temperature will be in the vicinity of 79.3 degrees. Temperatures in the Caribbean typically rise during the day, to an average of 86.5 degrees in the early afternoon. The temperature in the Caribbean will typically decline by early evening, to approximately 81.1 degrees. Overall, temperatures in the Caribbean during September average around 82.2 degrees.

 

September Temperatures in the Caribbean by Time of Day
Early Morning Late Morning Early Afternoon Late Afternoon Early Evening Overall
79.3° F 85.2° F 86.5° F 84.7° F 81.1° F 82.2° F

 

Rain

Rain is most likely to occur around 4:00 PM during the month of September, and it is least likely to occur around 6:00 PM. In the Caribbean during September, thunderstorms when they occur -- are most likely sometime around 6:00 AM.

 

September Rainfall in the Caribbean by Time of Day
  Percent Frequencies of Hourly Observations
Hour Rain
and/or
Drizzle
Thunder-
storms
12:00 AM (midnight) 11.4 % 4.3 %
1:00 AM 8.9 % 2.0 %
2:00 AM 9.0 % 2.4 %
3:00 AM 9.8 % 3.5 %
4:00 AM 8.0 % 1.5 %
5:00 AM 9.9 % 2.7 %
6:00 AM 11.4 % 5.8 %
7:00 AM 11.6 % 2.3 %
8:00 AM 13.5 % 2.0 %
9:00 AM 7.8 % 3.3 %
10:00 AM 10.4 % 1.5 %
11:00 AM 13.3 % 2.8 %
12:00 PM (noon) 6.4 % 2.4 %
1:00 PM 13.7 % 4.9 %
2:00 PM 16.5 % 5.8 %
3:00 PM 6.9 % 2.5 %
4:00 PM 17.3 % 5.4 %
5:00 PM 12.9 % 5.2 %
6:00 PM 4.2 % 0.8 %
7:00 PM 12.0 % 3.8 %
8:00 PM 9.6 % 3.6 %
9:00 PM 4.4 % 1.2 %
10:00 PM 10.9 % 3.4 %
11:00 PM 9.0 % 2.3 %
ALL 12.0 % 3.4 %

 

Island Rankings

For help choosing your perfect island destination, check out these other pages, in which the islands of the region are listed; ranked for the month of September by the weather conditions listed below.

 

 

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