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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 an exceptionally high level of rainfall in September, with more than 24 rainy days on average.

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

  • New! Chat with our AI weatherman - it’s amazing and free.
Average dry days
1
Dry days
Average rainy days
29
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/28°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Charlestown in September average weather

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Temperatures trend during September in Charlestown

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. Light rain shower
Light rain shower
29° /28° 2.3 mm 6
2 Sept. Light rain shower
Light rain shower
29° /28° 9.9 mm 6
3 Sept. Light rain shower
Light rain shower
29° /28° 2.1 mm 6
4 Sept. Light rain shower
Light rain shower
29° /28° 1.2 mm 6
5 Sept. Patchy light drizzle
Patchy light drizzle
29° /28° 2.3 mm 6
6 Sept. Light rain shower
Light rain shower
29° /28° 0.9 mm 6
7 Sept. Light rain shower
Light rain shower
29° /28° 2.2 mm 6
8 Sept. Patchy light rain
Patchy light rain
29° /28° 11.8 mm 6
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
29° /28° 13.4 mm 6
10 Sept. Light rain shower
Light rain shower
29° /28° 3.4 mm 6
11 Sept. Light drizzle
Light drizzle
29° /28° 1.5 mm 6
12 Sept. Patchy rain possible
Patchy rain possible
29° /28° 0.7 mm 6
13 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
28° /28° 9.4 mm 6
14 Sept. Patchy light drizzle
Patchy light drizzle
29° /28° 2.3 mm 6
15 Sept. Patchy rain possible
Patchy rain possible
29° /28° 0.6 mm 6
16 Sept. Patchy rain possible
Patchy rain possible
29° /28° 1.6 mm 6
17 Sept. Patchy rain possible
Patchy rain possible
29° /28° 0.9 mm 6
18 Sept. Partly cloudy
Partly cloudy
29° /28° 0.1 mm 7
19 Sept. Patchy rain possible
Patchy rain possible
29° /28° 1 mm 7
20 Sept. Patchy light drizzle
Patchy light drizzle
29° /28° 0.5 mm 7
21 Sept. Light rain shower
Light rain shower
29° /28° 2.8 mm 7
22 Sept. Patchy rain possible
Patchy rain possible
29° /28° 0.4 mm 7
23 Sept. Patchy rain possible
Patchy rain possible
29° /28° 0.9 mm 7
24 Sept. Light rain shower
Light rain shower
29° /28° 0.7 mm 6
25 Sept. Patchy rain possible
Patchy rain possible
29° /28° 1.2 mm 6
26 Sept. Patchy rain possible
Patchy rain possible
29° /28° 2.9 mm 6
27 Sept. Light rain shower
Light rain shower
30° /28° 2.5 mm 7
28 Sept. Patchy rain possible
Patchy rain possible
29° /28° 0.9 mm 6
29 Sept. Patchy rain possible
Patchy rain possible
29° /28° 3.5 mm 6
30 Sept. Patchy light rain
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 87.5 mm spread over approximately 29 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 27 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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Location coordinates Where is Charlestown?

Get accurate weather forecasts for Charlestown, located at latitude 17.133 and longitude -62.617. Stay updated with localized weather information tailored for Charlestown.

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