September
Weather in Saint Lucia for September 2026
Your guide to Saint Lucia weather in September - trends and predictions
Until now, September 2026 in Saint Lucia has been nearly identical to the historical average, with a temperature of 29.5 °C (showing only a slight deviation of 0.5 °C).
The forecast for the next days in Saint Lucia predicts temperatures to be around 30 °C, close to the historical average.
In general, the average temperature in Saint Lucia at the beginning of September is 30 °C. As the month progressed, temperatures tended to remain steady, reaching an average of 30 °C by the end of September.
Saint Lucia in September brings notable rainfall, with an average of 19 rainy days and a total precipitation of 99.8 mm.
Temperatures
Rain 🌧️
11
Dry days
19
Rainy days
0
Snow days
30°/27°
Temperatures
20 km/h
Avg max wind
73 %
Avg humidity
Saint Lucia Weather September
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Temperatures trend during September in Saint Lucia
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September weather in Saint Lucia day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Patchy rain possible | 30° /26° | 2.9 mm | 5 | |
| 2 Sept. | Patchy rain possible | 30° /26° | 5.7 mm | 6 | |
| 3 Sept. | Light rain shower | 30° /26° | 1.7 mm | 8 | |
| 4 Sept. | Patchy rain possible | 30° /27° | 2.6 mm | 7 | |
| 5 Sept. | Patchy rain possible | 30° /26° | 3.7 mm | 6 | |
| 6 Sept. | Patchy rain possible | 30° /27° | 0.9 mm | 6 | |
| 7 Sept. | Patchy rain possible | 30° /27° | 1.5 mm | 7 | |
| 8 Sept. | Patchy rain possible | 30° /26° | 1.7 mm | 6 | |
| 9 Sept. | Patchy rain possible | 30° /26° | 4.4 mm | 6 | |
| 10 Sept. | Patchy rain possible | 30° /27° | 7.9 mm | 6 | |
| 11 Sept. | Patchy rain possible | 30° /27° | 3 mm | 7 | |
| 12 Sept. | Patchy rain possible | 30° /26° | 2.3 mm | 6 | |
| 13 Sept. | Light rain shower | 30° /26° | 4 mm | 6 | |
| 14 Sept. | Patchy rain possible | 30° /26° | 1.8 mm | 6 | |
| 15 Sept. |  Overcast | 29° /26° | 1.8 mm | 11.8 | |
| 16 Sept. | Light rain shower | 29° /27° | 4.9 mm | 11.8 | |
| 17 Sept. | Light rain shower | 29° /27° | 5.2 mm | 7 | |
| 18 Sept. | Patchy rain possible | 30° /27° | 0.6 mm | 7 | |
| 19 Sept. | Patchy rain possible | 30° /26° | 1.7 mm | 7 | |
| 20 Sept. | Patchy rain possible | 30° /27° | 3.8 mm | 6 | |
| 21 Sept. | Overcast | 30° /27° | 0 mm | 7 | |
| 22 Sept. | Patchy rain possible | 30° /27° | 0.2 mm | 7 | |
| 23 Sept. | Patchy rain possible | 30° /26° | 9.6 mm | 7 | |
| 24 Sept. | Patchy rain possible | 29° /26° | 0.1 mm | 7 | |
| 25 Sept. | Patchy rain possible | 30° /26° | 2.8 mm | 7 | |
| 26 Sept. | Overcast | 30° /27° | 0.3 mm | 6 | |
| 27 Sept. | Overcast | 30° /27° | 0 mm | 6 | |
| 28 Sept. | Patchy rain possible | 30° /27° | 0 mm | 8 | |
| 29 Sept. | Patchy rain possible | 31° /27° | 0.6 mm | 7 | |
| 30 Sept. | Patchy rain possible | 30° /26° | 1.4 mm | 6 | |
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Important Notice
Our weather forecast for Saint Lucia 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 Lucia forecast closer to your planned date for the most up-to-date weather information.
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Saint Lucia in September - FAQ
What are the expected maximum and minimum temperatures in Saint Lucia 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 Lucia during September?
Moderate rainfall is anticipated in Saint Lucia during September, with a total of 99.8 mm spread over approximately 19 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Saint Lucia during September?
The average wind speed in Saint Lucia during September is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Saint Lucia
Explore the daily rainfall trends and prepare for Saint Lucias September weather 💧
Typically, Saint Lucia has 19 rainy days in September with a total of 99.8 mm of rainfall.
UV exposure in Saint Lucia during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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