September Weather in Seabrook, United States

Last updated: June 24, 2025

In Seabrook, United States, the average temperature in September hovers around 27°C (81°F), with fluctuations ranging from a cool 14°C (58°F) to a warm 35°C (96°F). Visitors can expect 216 mm (8.5 in) of precipitation over approximately 16 days, contributing to a comfortable average humidity of 73%. Whether you're exploring local attractions or soaking in the scenery, be prepared for a diverse climate experience!

September Temperature in Seabrook

In September in Seabrook, the average temperature is 27°C (81°F), with maximums reaching up to 35°C (96°F) and minimums dipping as low as 14°C (58°F). This pleasant climate makes Seabrook an ideal destination for travelers seeking warm and enjoyable weather.

September Weather in Seabrook: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Seabrook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seabrook, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (96°F) and lows dropping to around 14°C (58°F).

Data source: Temperature data for Seabrook generated using information from the Copernicus Climate Change Service.

September Precipitation in Seabrook

In Seabrook in September, the precipitation amount is 216 mm (8.5 in) over the course of 16 days.

September Precipitation Trends in Seabrook

The chart displays monthly precipitation patterns in Seabrook, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Seabrook, September typically receives around 216 mm (8.5 inches) of precipitation spread over approximately 16 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Seabrook

In Seabrook in September, humidity is 73%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel sticky and heavy, while also requiring frequent hydration breaks to stay comfortable during your travels.

September Average Humidity in Seabrook

This chart illustrates the average monthly humidity levels in Seabrook, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Seabrook is approximately 73%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Seabrook

In Seabrook in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Seabrook.

Maximum UV Index Levels in Seabrook for September

The chart shows the monthly maximum UV Index (UVI) for Seabrook in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Seabrook typically reaches 10, which falls under the very high exposure category.

Data source: Seabrook September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Seabrook Compares to Other Months

Weather in Seabrook varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Seabrook, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Seabrook, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	78 mm (3.1 inches)	78%	moderate
February Weather	15°C (59°F)	86 mm (3.4 inches)	81%	very high
March Weather	19°C (66°F)	68 mm (2.7 inches)	76%	very high
April Weather	21°C (70°F)	98 mm (3.9 inches)	79%	extreme
May Weather	25°C (77°F)	168 mm (6.6 inches)	79%	extreme
June Weather	28°C (82°F)	166 mm (6.5 inches)	74%	extreme
July Weather	28°C (83°F)	150 mm (5.9 inches)	71%	extreme
August Weather	29°C (84°F)	208 mm (8.2 inches)	68%	extreme
September Weather	27°C (81°F)	216 mm (8.5 inches)	73%	very high
October Weather	23°C (73°F)	121 mm (4.7 inches)	75%	very high
November Weather	17°C (63°F)	78 mm (3.1 inches)	78%	high
December Weather	15°C (59°F)	104 mm (4.1 inches)	84%	moderate