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Weather in Saint Croix Island for September 2025

Your guide to Saint Croix Island weather in September - trends and predictions
  • In general, the average temperature in Saint Croix Island at the beginning of September is 30.4 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 30.7 °C by the end of September.

  • Saint Croix Island experiences an exceptionally high level of rainfall in September, with more than 24 rainy days on average.

  • Is September a good time to visit Saint Croix Island? check out the best time to travel to Saint Croix Island page.

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
4
Dry days
Average rainy days
26
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/27°
Temperatures
Average wind speed
22 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Saint Croix Island in September average weather

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Temperatures trend during September in Saint Croix Island

See the weather trend as well as the moving average line
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September weather day by day

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Date Weather Temperatures Rain UV More
1 Sept. Patchy rain possible
Patchy rain possible
30° /26° 1.5 mm 7
2 Sept. Moderate rain
Moderate rain
30° /27° 9.2 mm 7
3 Sept. Moderate rain at times
Moderate rain at times
31° /27° 5.7 mm 7
4 Sept. Overcast
Overcast
30° /27° 2.8 mm 7
5 Sept. Partly cloudy
Partly cloudy
30° /26° 1.9 mm 8
6 Sept. Moderate rain
Moderate rain
31° /26° 5 mm 7
7 Sept. Torrential rain shower
Torrential rain shower
31° /27° 6.9 mm 7
8 Sept. Light rain shower
Light rain shower
31° /27° 4.3 mm 7
9 Sept. Thundery outbreaks possible
Thundery outbreaks possible
31° /27° 9.8 mm 7
10 Sept. Patchy rain possible
Patchy rain possible
30° /26° 1.4 mm 7
11 Sept. Patchy rain possible
Patchy rain possible
31° /27° 1.5 mm 7
12 Sept. Cloudy
Cloudy
30° /27° 2.6 mm 7
13 Sept. Light rain shower
Light rain shower
30° /27° 2.4 mm 7
14 Sept. Overcast
Overcast
31° /27° 0.7 mm 7
15 Sept. Patchy light rain with thunder
Patchy light rain with thunder
31° /27° 0.9 mm 7
16 Sept. Patchy rain possible
Patchy rain possible
31° /27° 0.7 mm 7
17 Sept. Patchy rain possible
Patchy rain possible
29° /27° 1.2 mm 7
18 Sept. Partly cloudy
Partly cloudy
30° /27° 0.2 mm 8
19 Sept. Partly cloudy
Partly cloudy
31° /27° 0 mm 8
20 Sept. Patchy rain possible
Patchy rain possible
31° /27° 0.4 mm 8
21 Sept. Light rain shower
Light rain shower
31° /27° 2.2 mm 8
22 Sept. Patchy rain possible
Patchy rain possible
31° /27° 0.5 mm 8
23 Sept. Light rain shower
Light rain shower
31° /27° 1.2 mm 7
24 Sept. Light rain shower
Light rain shower
30° /27° 4.5 mm 7
25 Sept. Light rain shower
Light rain shower
30° /28° 1.7 mm 8
26 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
30° /28° 7.3 mm 7
27 Sept. Patchy rain possible
Patchy rain possible
31° /27° 6.6 mm 7
28 Sept. Patchy rain possible
Patchy rain possible
31° /28° 4.1 mm 7
29 Sept. Patchy rain possible
Patchy rain possible
31° /27° 0.3 mm 8
30 Sept. Patchy rain possible
Patchy rain possible
32° /27° 1 mm 7
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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.

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 31° 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 74.5 mm spread over approximately 26 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.

What to pack to Saint Croix Island in September?

As you prepare for your trip to Saint Croix Island in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Saint Croix Island, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
    • Sandals/Flip-flops: Comfortable for warm climates
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips
    • Insect Repellent: For destinations with mosquitos or other insects

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 ☀️
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Location coordinates 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.

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