Galveston County (Bolivar Peninsula)
September
Weather in Galveston County for September 2025
Your guide to Galveston County weather in September - trends and predictions
In general, the average temperature in Galveston County at the beginning of September is 27.9 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 29.4 °F by the end of September.
The climate of Galveston County in September is notably wet, with an average of 15 rainy days, and a total of 198.3 mm of precipitation.
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Temperatures
Rain 🌧️
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15
Dry days
15
Rainy days
0
Snow days
28°/25°
Temperatures
23 km/h
Avg max wind
77 %
Avg humidity
Galveston County Weather September
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  27° | 2 29° | 3  29° | 4 27° | 5 27° | 6  27° | |
| 7  29° | 8 28° | 9  28° | 10 27° | 11 26° | 12 27° | 13 28° |
| 14 30° | 15 29° | 16 29° | 17 29° | 18 27° | 19 27° | 20 28° |
| 21 29° | 22  30° | 23 29° | 24 28° | 25 30° | 26 29° | 27 30° |
| 28 30° | 29 29° | 30 30° |
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Temperatures trend during September in Galveston County
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 |
|---|---|---|---|---|---|
| Sept. 1 | Moderate or heavy rain shower | 27° /25° | 23.3 mm | 6 | |
| Sept. 2 | Moderate or heavy rain shower | 29° /25° | 26.3 mm | 6 | |
| Sept. 3 | Overcast | 29° /26° | 0 mm | 6 | |
| Sept. 4 | Moderate or heavy rain shower | 27° /25° | 43.2 mm | 6 | |
| Sept. 5 | Moderate or heavy rain shower | 27° /24° | 43.2 mm | 6 | |
| Sept. 6 | Patchy rain possible | 27° /23° | 2.6 mm | 6 | |
| Sept. 7 | Partly cloudy | 29° /23° | 0 mm | 7 | |
| Sept. 8 | Partly cloudy | 28° /22° | 0 mm | 7 | |
| Sept. 9 | Sunny | 28° /20° | 0 mm | 7 | |
| Sept. 10 | Moderate or heavy rain shower | 27° /23° | 3.4 mm | 6 | |
| Sept. 11 | Moderate or heavy rain shower | 26° /23° | 34.9 mm | 6 | |
| Sept. 12 | Patchy rain possible | 27° /22° | 0.9 mm | 6 | |
| Sept. 13 | Sunny | 28° /23° | 0 mm | 7 | |
| Sept. 14 | Sunny | 30° /25° | 0 mm | 8 | |
| Sept. 15 | Sunny | 29° /25° | 0 mm | 7 | |
| Sept. 16 | Patchy rain possible | 29° /25° | 0.1 mm | 6 | |
| Sept. 17 | Overcast | 29° /26° | 0 mm | 6 | |
| Sept. 18 | Patchy rain possible | 27° /25° | 0.3 mm | 6 | |
| Sept. 19 | Overcast | 27° /25° | 0 mm | 6 | |
| Sept. 20 | Moderate rain at times | 28° /25° | 0.9 mm | 6 | |
| Sept. 21 | Moderate or heavy rain shower | 29° /26° | 2.9 mm | 6 | |
| Sept. 22 | Cloudy | 30° /27° | 0 mm | 7 | |
| Sept. 23 | Patchy rain possible | 29° /27° | 0.9 mm | 6 | |
| Sept. 24 | Patchy rain possible | 28° /26° | 6.1 mm | 6 | |
| Sept. 25 | Moderate rain at times | 30° /26° | 5 mm | 7 | |
| Sept. 26 | Partly cloudy | 29° /24° | 4.3 mm | 7 | |
| Sept. 27 | Sunny | 30° /24° | 0 mm | 8 | |
| Sept. 28 | Sunny | 30° /24° | 0 mm | 8 | |
| Sept. 29 | Partly cloudy | 29° /24° | 0 mm | 7 | |
| Sept. 30 | Sunny | 30° /26° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Galveston County 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 Galveston County forecast closer to your planned date for the most up-to-date weather information.
Galveston County in September - FAQ
What are the expected maximum and minimum temperatures in Galveston County during September?
During September, expect a variety of temperatures with highs around 28° and lows near 25°, suitable for diverse activities and preferences.
How much rainfall should be expected in Galveston County during September?
Significant rainfall exceeding 198.3 mm is expected in Galveston County during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Galveston County during September?
The average wind speed in Galveston County during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Galveston County
Explore the daily rainfall trends and prepare for Galveston Countys September weather 💧
UV exposure in Galveston County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Galveston County?Get accurate weather forecasts for Galveston County, located at latitude 29.478 and longitude -94.58. Stay updated with localized weather information tailored for Galveston County.
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