Castries Weather: September
 |
Average Day Temperature: | 90.9°F |
|
Average Night Temperature: | 85.3°F |
|
Sea Water Temperature: | 88.7°F |
|
Number of Sunny Days: | 4 days |
| Sunshine Hours: | 12.0 - 12.4 hours | |
|
Number of Rainy Days: | 5 days |
| Precipitation Totals: | 3.5 in | |
| detailed information | ||
forecast
| Castries |
Temperature
| Castries |
Air Temperature in September, °F
The highest day temperature in September 2025 was 92°F. The lowest night temperature was 84°F. The average values for day and night temperatures during September were 89.9°F и 85.0°F respectivly.
Castries Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Castries was 89.5°F. The maximum and minimum values were 88.8°F and 89.8°F respectively.
Most of the days in September are cloudy but you can also expect sunny or gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Castries is 3.5 in. It makes september one of the most rainy months of the year.
The average wind speed in September is 10.7 mph. It makes September the most windless month of the year for Castries.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Castries in September is 6.4 hours.
Castries on the Weather Map
| 0300 |  |
80°F | W 16 mph |
| 0600 |  |
82°F | W 15 mph |
| 0900 | |
84°F | W 17 mph |
| 1200 |  |
84°F | W 17 mph |
| 1500 | |
82°F | W 19 mph |
| 1800 |  |
82°F | W 17 mph |
| 2100 | |
82°F | W 19 mph |
| 0000 | |
82°F | W 19 mph |