The long, warm days of September are punctuated by brief rain showers that occur mainly in the morning and afternoon. Oftentimes these showers help to break a little of the heat that Anguilla is experiencing which is fortunate, as daytime temperatures can reach as high as 88 degrees Fahrenheit.
During the early morning hours of an average September day in Anguilla, you can expect the temperature will be in the vicinity of 83.1 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 82.1 degrees.
Overall, temperatures in Anguilla during September average around 84.0 degrees.
| Early Morning | Late Morning | Early Afternoon | Late Afternoon | Early Evening | Overall |
| 83.1° F |
86.7° F |
87.3° F |
84.9° F |
82.1° F |
84.0° F |
|
Rain
Rain is most likely to occur around 7:00 AM
during the month of September, and it is least likely to occur around 4:00 AM.
As shown below, if a thunderstorm occurs in September, it is most likely to occur around 10:00 PM.
| Percent Frequencies of Hourly Observations | | Hour | Rain and/or Drizzle | Thunder- storms |
| 1:00 AM |
13.7 % |
2.6 % |
| 4:00 AM |
12 % |
1.7 % |
| 7:00 AM |
18.5 % |
1.9 % |
| 10:00 AM |
16 % |
1.3 % |
| 1:00 PM |
15.2 % |
1.6 % |
| 4:00 PM |
16.7 % |
1.1 % |
| 7:00 PM |
13.9 % |
2.4 % |
| 10:00 PM |
15.7 % |
2.9 % |
| ALL |
15.6 % |
1.9 % |
|