Saint Croix Island (Saint Croix)
September
Weather in Saint Croix Island for September 2025
Your guide to Saint Croix Island weather in September - trends and predictions
Hydrologic Outlook - See hour by hour.
Until now, September 2025 in Saint Croix Island is slightly cooler than the historical average by -0.7 °C.
The forecast for the next days in Saint Croix Island predicts temperatures to be around 30 °C, close to the historical average.
In general, the average temperature in Saint Croix Island at the beginning of September is 30.3 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 30.1 °C by the end of September.
Saint Croix Island experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 88.6 mm.
Official Weather Alert ⚠️
Temperatures
Rain 🌧️
8
Dry days
22
Rainy days
0
Snow days
30°/27°
Temperatures
22 km/h
Avg max wind
77 %
Avg humidity
Saint Croix Island Weather September
Move between months or click on a day
Temperatures trend during September in Saint Croix Island
See the weather trend as well as the moving average line
September weather in Saint Croix Island day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 30° /27° | 1 mm | 7 | |
| 2 Sept. |  Moderate rain | 30° /27° | 7.3 mm | 6 | |
| 3 Sept. |  Moderate rain at times | 31° /27° | 3.8 mm | 7 | |
| 4 Sept. |  Overcast | 30° /27° | 4 mm | 7 | |
| 5 Sept. |  Partly cloudy | 30° /27° | 2.3 mm | 7 | |
| 6 Sept. | Moderate rain | 31° /27° | 5.7 mm | 7 | |
| 7 Sept. |  Torrential rain shower | 30° /27° | 4.6 mm | 7 | |
| 8 Sept. | Light rain shower | 30° /27° | 13.6 mm | 6 | |
| 9 Sept. |  Thundery outbreaks possible | 31° /27° | 6.5 mm | 7 | |
| 10 Sept. | Light rain shower | 31° /27° | 2.7 mm | 7 | |
| 11 Sept. | Patchy rain possible | 31° /27° | 1 mm | 7 | |
| 12 Sept. |  Cloudy | 30° /27° | 1.7 mm | 7 | |
| 13 Sept. | Light rain shower | 30° /27° | 1.6 mm | 7 | |
| 14 Sept. | Light rain shower | 30° /27° | 2.8 mm | 7 | |
| 15 Sept. |  Patchy light rain with thunder | 31° /27° | 2.2 mm | 7 | |
| 16 Sept. | Patchy rain possible | 31° /27° | 0.7 mm | 7 | |
| 17 Sept. | Heavy rain | 29° /27° | 41.9 mm | 2.4 | |
| 18 Sept. | Heavy rain | 29° /28° | 66.8 mm | 2.6 | |
| 19 Sept. | Moderate rain | 30° /27° | 5.4 mm | 2.7 | |
| 20 Sept. | Patchy rain possible | 30° /27° | 0.7 mm | 0.2 | |
| 21 Sept. | Patchy rain possible | 30° /27° | 0.1 mm | 6 | |
| 22 Sept. | Patchy rain possible | 29° /26° | 0.1 mm | 6 | |
| 23 Sept. |  Sunny | 30° /26° | 0 mm | 7 | |
| 24 Sept. | Patchy rain possible | 30° /27° | 0.4 mm | 6 | |
| 25 Sept. | Patchy rain possible | 29° /27° | 1.8 mm | 6 | |
| 26 Sept. | Patchy rain possible | 30° /26° | 1.8 mm | 6 | |
| 27 Sept. | Patchy rain possible | 30° /27° | 0.1 mm | 6 | |
| 28 Sept. | Patchy rain possible | 30° /27° | 0.6 mm | 6 | |
| 29 Sept. | Patchy rain possible | 30° /27° | 0.2 mm | 6 | |
| 30 Sept. | Patchy rain possible | 32° /27° | 1 mm | 7 | |
| Next | |||||
Important Notice
Our weather forecast for Saint Croix Island in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Saint Croix Island forecast closer to your planned date for the most up-to-date weather information.
Change Month
Saint Croix Island in September - FAQ
What are the expected maximum and minimum temperatures in Saint Croix Island during September?
During September, expect a variety of temperatures with highs around 30° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Saint Croix Island during September?
Moderate rainfall is anticipated in Saint Croix Island during September, with a total of 88.6 mm spread over approximately 22 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Saint Croix Island during September?
The average wind speed in Saint Croix Island during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saint Croix Island
Explore the daily rainfall trends and prepare for Saint Croix Islands September weather 💧
UV exposure in Saint Croix Island during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Provinces in Saint Croix Island
Select a province for an accurate weather forecast
Top locations in Saint Croix Island
Select a location for an accurate weather forecast
More Locations Quick links
More Saint Croix Island weather pages
You are here
Where is Saint Croix Island?Get accurate weather forecasts for Saint Croix Island, located at latitude 17.728 and longitude -64.747. Stay updated with localized weather information tailored for Saint Croix Island.
Found a mistake?
We appreciate your attention to details. Tell us here.