With tropical storm season in full swing and more than 9 inches of rain expected this month, visitors should take precautions if vacationing in Dominica in September. Local forecasts will prove invaluable for learning about current conditions.
On any given day during September in Dominica, you can expect early morning temperatures to be around 81.2 degrees.
In September, temperatures typically rise to around 86.7 degrees by early afternoon.
By the early evening hours in September the temperature will generally fall to somewhere in the vicinity of 79.4 degrees.
For the month of September as a whole, temperatures in Dominica average around 80.8 degrees.
| Early Morning | Late Morning | Early Afternoon | Late Afternoon | Early Evening | Overall |
| 81.2° F |
86.6° F |
86.7° F |
83.9° F |
79.4° F |
80.8° F |
|
Rain
During September, rain is most likely to occur around 2:00 PM, and least likely to occur around 8:00 PM.
To the extent thunderstorms occur in Dominica during September, they are most likely to occur around 2:00 PM, as shown in the following table.
| Percent Frequencies of Hourly Observations | | Hour | Rain
and/or
Drizzle | Thunder-
storms |
| 2:00 AM |
19.4 % |
3 % |
| 5:00 AM |
18.2 % |
3 % |
| 8:00 AM |
21.6 % |
2.8 % |
| 11:00 AM |
21.2 % |
4.6 % |
| 2:00 PM |
25 % |
7.8 % |
| 5:00 PM |
21 % |
5 % |
| 8:00 PM |
15.8 % |
3.2 % |
| 11:00 PM |
17.4 % |
2.6 % |
| ALL |
19.8 % |
3.9 % |
|
