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Weather in Saint Croix for September 2025

Your guide to Saint Croix weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Hydrologic Outlook - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Saint Croix is slightly cooler than the historical average by -0.7 °C.

  • The forecast for the next days in Saint Croix predicts temperatures to be around 30 °C, close to the historical average.

  • In general, the average temperature in Saint Croix 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.

    • Rain 🌧️

  • Saint Croix experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 88.6 mm.

Average dry days
8
Dry days
Average rainy days
22
Rainy days
Average snowy days
0
Snow days
Average temperatures
30°/27°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Saint Croix Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy rain possible
30°
2
Moderate rain
30°
3
Moderate rain at times
31°
4
Overcast
30°
5
Partly cloudy
30°
6
Moderate rain
31°
7
Torrential rain shower
30°
8
Light rain shower
30°
9
Thundery outbreaks possible
31°
10
Light rain shower
31°
11
Patchy rain possible
31°
12
Cloudy
30°
13
Light rain shower
30°
14
Light rain shower
30°
15
Patchy light rain with thunder
31°
16
Patchy rain possible
31°
17
Weather Alert Heavy rain
29°
18
Heavy rain
29°
19
Moderate rain
30°
20
Patchy rain possible
30°
21
Patchy rain possible
30°
22
Patchy rain possible
29°
23
Sunny
30°
24
Patchy rain possible
30°
25
Patchy rain possible
29°
26
Patchy rain possible
30°
27
Patchy rain possible
30°
28
Patchy rain possible
30°
29
Patchy rain possible
30°
30
Patchy rain possible
32°

Temperatures trend during September in Saint Croix

See the weather trend as well as the moving average line

September weather in Saint Croix day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 1 mm 7
2 Sept. Moderate rain
Moderate rain
 30° /27° 7.3 mm 6
3 Sept. Moderate rain at times
Moderate rain at times
 31° /27° 3.8 mm 7
4 Sept. Overcast
Overcast
 30° /27° 4 mm 7
5 Sept. Partly cloudy
Partly cloudy
 30° /27° 2.3 mm 7
6 Sept. Moderate rain
Moderate rain
 31° /27° 5.7 mm 7
7 Sept. Torrential rain shower
Torrential rain shower
 30° /27° 4.6 mm 7
8 Sept. Light rain shower
Light rain shower
 30° /27° 13.6 mm 6
9 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 31° /27° 6.5 mm 7
10 Sept. Light rain shower
Light rain shower
 31° /27° 2.7 mm 7
11 Sept. Patchy rain possible
Patchy rain possible
 31° /27° 1 mm 7
12 Sept. Cloudy
Cloudy
 30° /27° 1.7 mm 7
13 Sept. Light rain shower
Light rain shower
 30° /27° 1.6 mm 7
14 Sept. Light rain shower
Light rain shower
 30° /27° 2.8 mm 7
15 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 31° /27° 2.2 mm 7
16 Sept. Patchy rain possible
Patchy rain possible
 31° /27° 0.7 mm 7
17 Sept. Heavy rain
Heavy rain
 29° /27° 41.9 mm 2.4
18 Sept. Heavy rain
Heavy rain
 29° /28° 66.8 mm 2.6
19 Sept. Moderate rain
Moderate rain
 30° /27° 5.4 mm 2.7
20 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 0.7 mm 0.2
21 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 0.1 mm 6
22 Sept. Patchy rain possible
Patchy rain possible
 29° /26° 0.1 mm 6
23 Sept. Sunny
Sunny
 30° /26° 0 mm 7
24 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 0.4 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
 29° /27° 1.8 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
 30° /26° 1.8 mm 6
27 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 0.1 mm 6
28 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 0.6 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
 30° /27° 0.2 mm 6
30 Sept. Patchy rain possible
Patchy rain possible
 32° /27° 1 mm 7
Next
Important Notice
Our weather forecast for Saint Croix 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 forecast closer to your planned date for the most up-to-date weather information.
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Saint Croix in September - FAQ

What are the expected maximum and minimum temperatures in Saint Croix 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 during September?
Moderate rainfall is anticipated in Saint Croix 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 during September?
The average wind speed in Saint Croix during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Saint Croix

Explore the daily rainfall trends and prepare for Saint Croixs September weather 💧

UV exposure in Saint Croix during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Saint Croix?

Get accurate weather forecasts for Saint Croix, located at latitude 17.728 and longitude -64.747. Stay updated with localized weather information tailored for Saint Croix.

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