Charlestown
September
Weather in Charlestown for September 2025
Your guide to Charlestown weather in September - trends and predictions
In general, the average temperature in Charlestown 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.
Charlestown experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 86.3 mm.
Is September a good time to visit Charlestown? check out the best time to travel to Charlestown page.
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Temperatures
Rain 🌧️
More
8
Dry days
22
Rainy days
0
Snow days
29°/28°
Temperatures
26 km/h
Avg max wind
75 %
Avg humidity
Charlestown 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 28° | 14 29° |
| 15 29° | 16 29° | 17 29° | 18  29° | 19 29° | 20 29° | 21 29° |
| 22 29° | 23 29° | 24 29° | 25 29° | 26 29° | 27 30° | 28 29° |
| 29 29° | 30 29° |
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Temperatures trend during September in Charlestown
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. | Light rain shower | 29° /28° | 2.3 mm | 6 | |
| 2 Sept. | Light rain shower | 29° /28° | 9.9 mm | 6 | |
| 3 Sept. | Light rain shower | 29° /28° | 2.1 mm | 6 | |
| 4 Sept. | Light rain shower | 29° /28° | 1.2 mm | 6 | |
| 5 Sept. | Patchy light drizzle | 29° /28° | 2.3 mm | 6 | |
| 6 Sept. | Light rain shower | 29° /28° | 0.9 mm | 6 | |
| 7 Sept. | Light rain shower | 29° /28° | 2.2 mm | 6 | |
| 8 Sept. | Patchy light rain | 29° /28° | 11.8 mm | 6 | |
| 9 Sept. | Moderate or heavy rain shower | 29° /28° | 13.4 mm | 6 | |
| 10 Sept. | Light rain shower | 29° /28° | 3.4 mm | 6 | |
| 11 Sept. | Light drizzle | 29° /28° | 1.5 mm | 6 | |
| 12 Sept. | Patchy rain possible | 29° /28° | 0.7 mm | 6 | |
| 13 Sept. | Moderate or heavy rain shower | 28° /28° | 9.4 mm | 6 | |
| 14 Sept. | Patchy light drizzle | 29° /28° | 2.3 mm | 6 | |
| 15 Sept. | Patchy rain possible | 29° /28° | 0.6 mm | 6 | |
| 16 Sept. | Patchy rain possible | 29° /28° | 1.6 mm | 6 | |
| 17 Sept. | Patchy rain possible | 29° /28° | 0.9 mm | 6 | |
| 18 Sept. | Partly cloudy | 29° /28° | 0.1 mm | 7 | |
| 19 Sept. | Patchy rain possible | 29° /28° | 1 mm | 7 | |
| 20 Sept. | Patchy light drizzle | 29° /28° | 0.5 mm | 7 | |
| 21 Sept. | Light rain shower | 29° /28° | 2.8 mm | 7 | |
| 22 Sept. | Patchy rain possible | 29° /28° | 0.4 mm | 7 | |
| 23 Sept. | Patchy rain possible | 29° /28° | 0.9 mm | 7 | |
| 24 Sept. | Light rain shower | 29° /28° | 0.7 mm | 6 | |
| 25 Sept. | Patchy rain possible | 29° /28° | 1.2 mm | 6 | |
| 26 Sept. | Patchy rain possible | 29° /28° | 2.9 mm | 6 | |
| 27 Sept. | Light rain shower | 30° /28° | 2.5 mm | 7 | |
| 28 Sept. | Patchy rain possible | 29° /28° | 0.9 mm | 6 | |
| 29 Sept. | Patchy rain possible | 29° /28° | 3.5 mm | 6 | |
| 30 Sept. | Patchy light rain | 29° /28° | 2.4 mm | 6 | |
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Important Notice
Our weather forecast for Charlestown 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 Charlestown forecast closer to your planned date for the most up-to-date weather information.
Charlestown in September - FAQ
What are the expected maximum and minimum temperatures in Charlestown during September?
During September, expect a variety of temperatures with highs around 29° and lows near 28°, suitable for diverse activities and preferences.
How much rainfall should be expected in Charlestown during September?
Moderate rainfall is anticipated in Charlestown during September, with a total of 86.3 mm spread over approximately 22 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Charlestown during September?
The average wind speed in Charlestown during September is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Charlestown in September?
As you prepare for your trip to Charlestown 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 Charlestown, 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 Charlestown
Explore the daily rainfall trends and prepare for Charlestowns September weather 💧
UV exposure in Charlestown during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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