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September Weather in Rockport, United States

Last updated: June 24, 2025

In September, the average temperature in Rockport, United States is a pleasant 23°C (73°F). Temperatures can vary significantly, with a minimum of 9°C (48°F) and a scorching maximum of 35°C (95°F). Expect 89 mm (3.5 in) of precipitation spread over 8 days, contributing to an average humidity of 71%.

September Temperature in Rockport

In September in Rockport, the average temperature is 23°C (73°F). The maximum can reach 35°C (95°F), while the minimum can drop to as low as 9°C (48°F). This variety in temperatures makes Rockport an ideal destination for travelers seeking a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Rockport, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rockport, September typically has an average temperature of 23°C (73°F), with highs reaching up to 35°C (95°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec364049576977807773614642
Data source: Temperature data for Rockport generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Rockport

In Rockport in September, the precipitation amount is 89 mm (3.5 in) over a span of 8 days.

September Precipitation Trends in Rockport

The chart displays monthly precipitation patterns in Rockport, 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 Rockport, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec9312913712513512184858912194107
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rockport

In Rockport in September humidity is 71%. With an average temperature of 23°C (73°F), this humidity feels like a warm, sticky embrace, making outdoor exploration slightly uncomfortable but still manageable if you stay hydrated and plan for breaks in shaded areas.

September Average Humidity in Rockport

This chart illustrates the average monthly humidity levels in Rockport, 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 Rockport is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rockport

In Rockport in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Rockport.

Maximum UV Index Levels in Rockport for September

The chart shows the monthly maximum UV Index (UVI) for Rockport 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 Rockport typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3571010111099743
Data source: Rockport 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 Rockport Compares to Other Months

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

This table compares monthly weather conditions in Rockport, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (36°F)93 mm (3.6 inches)87%moderate
February Weather4°C (40°F)129 mm (5.1 inches)86%moderate
March Weather9°C (49°F)137 mm (5.4 inches)86%high
April Weather14°C (57°F)125 mm (4.9 inches)82%very high
May Weather20°C (69°F)135 mm (5.3 inches)82%very high
June Weather25°C (77°F)121 mm (4.8 inches)83%extreme
July Weather27°C (80°F)84 mm (3.3 inches)80%very high
August Weather25°C (78°F)84 mm (3.3 inches)74%very high
September Weather23°C (73°F)89 mm (3.5 inches)71%very high
October Weather16°C (62°F)121 mm (4.8 inches)78%high
November Weather8°C (46°F)94 mm (3.7 inches)88%moderate
December Weather5°C (42°F)107 mm (4.2 inches)88%moderate

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