September
Weather in Roseau for September 2025
Your guide to Roseau weather in September - trends and predictions
In general, the average temperature in Roseau at the beginning of September is 29 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 29.1 °C by the end of September.
Roseau experiences an exceptionally high level of rainfall in September, with more than 20 rainy days on average.
Is September a good time to visit Roseau? check out the best time to travel to Roseau page.
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6
Dry days
24
Rainy days
0
Snow days
29°/27°
Temperatures
17 km/h
Avg max wind
74 %
Avg humidity
Roseau in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  29° | 2 29° | 3 29° | 4 29° | 5 29° | 6 29° | 7 29° |
| 8 29° | 9 29° | 10 29° | 11 29° | 12  29° | 13 29° | 14 29° |
| 15 30° | 16  29° | 17 29° | 18 29° | 19 29° | 20 30° | 21 30° |
| 22 29° | 23 29° | 24 29° | 25 29° | 26 30° | 27 29° | 28 29° |
| 29 29° | 30 29° |
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Temperatures trend during September in Roseau
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Patchy rain possible | 29° /27° | 3.1 mm | 6 | |
| 2 Sept. | Patchy rain possible | 29° /27° | 5.3 mm | 6 | |
| 3 Sept. | Patchy rain possible | 29° /27° | 3.6 mm | 6 | |
| 4 Sept. | Patchy rain possible | 29° /27° | 1.7 mm | 6 | |
| 5 Sept. | Patchy rain possible | 29° /27° | 0.7 mm | 6 | |
| 6 Sept. | Patchy rain possible | 29° /27° | 2.2 mm | 6 | |
| 7 Sept. | Patchy rain possible | 29° /27° | 2.7 mm | 6 | |
| 8 Sept. | Patchy rain possible | 29° /27° | 5.4 mm | 6 | |
| 9 Sept. | Patchy rain possible | 29° /27° | 5.6 mm | 6 | |
| 10 Sept. | Patchy rain possible | 29° /27° | 1.2 mm | 6 | |
| 11 Sept. | Patchy rain possible | 29° /27° | 5.3 mm | 6 | |
| 12 Sept. | Partly cloudy | 29° /27° | 1.7 mm | 7 | |
| 13 Sept. | Partly cloudy | 29° /27° | 4 mm | 7 | |
| 14 Sept. | Partly cloudy | 29° /27° | 2.8 mm | 7 | |
| 15 Sept. | Partly cloudy | 30° /28° | 0.6 mm | 7 | |
| 16 Sept. | Sunny | 29° /27° | 1 mm | 7 | |
| 17 Sept. | Patchy rain possible | 29° /27° | 1.9 mm | 6 | |
| 18 Sept. | Patchy rain possible | 29° /27° | 0.4 mm | 6 | |
| 19 Sept. | Patchy rain possible | 29° /27° | 1.5 mm | 6 | |
| 20 Sept. | Patchy rain possible | 30° /27° | 2.5 mm | 7 | |
| 21 Sept. | Light rain shower | 30° /28° | 4.3 mm | 6 | |
| 22 Sept. | Light rain shower | 29° /28° | 1.3 mm | 6 | |
| 23 Sept. | Patchy rain possible | 29° /27° | 1.4 mm | 6 | |
| 24 Sept. | Light rain shower | 29° /28° | 5.4 mm | 6 | |
| 25 Sept. | Light rain shower | 29° /28° | 3.9 mm | 6 | |
| 26 Sept. | Patchy rain possible | 30° /27° | 4.7 mm | 6 | |
| 27 Sept. | Light rain shower | 29° /27° | 4.3 mm | 6 | |
| 28 Sept. | Light rain shower | 29° /27° | 3.4 mm | 6 | |
| 29 Sept. | Patchy rain possible | 29° /27° | 0.2 mm | 6 | |
| 30 Sept. | Patchy rain possible | 29° /27° | 0.8 mm | 6 | |
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Important Notice
Our weather forecast for Roseau 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 Roseau forecast closer to your planned date for the most up-to-date weather information.
Roseau in September - FAQ
What are the expected maximum and minimum temperatures in Roseau during September?
During September, expect a variety of temperatures with highs around 29° and lows near 27°, suitable for diverse activities and preferences.
How much rainfall should be expected in Roseau during September?
Moderate rainfall is anticipated in Roseau during September, with a total of 70.7 mm spread over approximately 24 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Roseau during September?
The average wind speed in Roseau during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Roseau in September?
As you prepare for your trip to Roseau 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 Roseau, 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
September rainfall patterns in Roseau
Explore the daily rainfall trends and prepare for Roseaus September weather 💧
UV exposure in Roseau during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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