The threat of facing inclement weather from tropical storms is a real possibility for those in 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 in 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.
| Monthly Averages | | High | Low | Rainfall (inches) | 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 in St. Kitts during September average around 82.6 degrees.
| 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 |
|
Rain
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 in St. Kitts during September, they are most likely to occur around 2:00 AM, as shown in the following table.
| Percent Frequencies of Hourly Observations | | Hour | Rain and/or Drizzle | Thunder- storms |
| 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 % |
|