Weather on St. Kitts in September

The threat of facing inclement weather from tropical storms is a real possibility for those on St. Kitts and Nevis during the month of September. Temperatures are beginning to break, providing a welcome relief from the heat, but rain and storms present a potential problem for international visitors. Particularly during September, staying informed about local conditions is an absolute must for travelers.

Typical Weather in September

September temperatures on St. Kitts range from an average low of 79.0 degrees to an average high of 88.0 degrees . During the month of September, it rains an average of 13.0 days , with an average total rainfall of about 5.6 inches . Nevertheless, all precipitation, no matter how slight, is included in these tables.


St. Kitts in September: Key Facts
Monthly Averages
High Low Rainfall
No. of Days
with Rain
88.0° F 79.0° F 5.6 13.0


On a typical September day, during the early morning hours you will probably find the temperature will be around 82.4 degrees. In September, temperatures typically rise to around 87.3 degrees by early afternoon. By the early evening hours in September the temperature will generally fall to somewhere in the vicinity of 80.5 degrees. Overall, temperatures on St. Kitts during September average around 82.6 degrees.


September Temperatures on St. Kitts by Time of Day
Early Morning Late Morning Early Afternoon Late Afternoon Early Evening Overall
82.4° F 87.0° F 87.3° F 84.2° F 80.5° F 82.6° F



During September, rain is most likely to occur around 5:00 AM, and least likely to occur around 2:00 AM. To the extent thunderstorms occur on St. Kitts during September, they are most likely to occur around 2:00 AM, as shown in the following table.


September Rainfall on St. Kitts by Time of Day
  Percent Frequencies of Hourly Observations
Hour Rain
2:00 AM 5.2 % 1.5 %
5:00 AM 11.1 % 0.2 %
8:00 AM 8.1 % 0 %
11:00 AM 8 % 0.5 %
2:00 PM 7.3 % 1.5 %
5:00 PM 7.6 % 0.5 %
8:00 PM 7.4 % 0.3 %
11:00 PM 10.1 % 0.4 %
ALL 8.1 % 0.6 %


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