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September Weather in Sinton, United States

Last updated: June 24, 2025

In Sinton, United States, the average temperature in September is a pleasant 27°C (82°F). Expect a minimum of 15°C (59°F) and a maximum that can reach up to 36°C (97°F). Be prepared for some rain, as the area receives about 132 mm (5.2 in) of precipitation over 15 days. With an average humidity of 73%, it's advisable to stay hydrated and enjoy the warm atmosphere!

September Temperature in Sinton

In September in Sinton, the average temperature is 27°C (82°F). The maximum can reach 36°C (97°F), and the minimum can be as low as 15°C (59°F). This makes it an ideal time for travelers seeking warm weather while still having some cooler moments to enjoy.

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

The chart illustrates September temperature patterns in Sinton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sinton, September typically has an average temperature of 27°C (82°F), with highs reaching up to 36°C (97°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec586068737983848581756661
Data source: Temperature data for Sinton 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 Sinton

In Sinton in September, the precipitation amount is 132 mm (5.2 in), occurring over a span of 15 days.

September Precipitation Trends in Sinton

The chart displays monthly precipitation patterns in Sinton, 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 Sinton, September typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec3832624712416011394132675650
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sinton

In Sinton in September, humidity is 73%. With an average temperature of 27°C (82°F), this humidity feels like you're walking through a warm, thick blanket, making travel feel sticky and requiring frequent breaks to stay refreshed.

September Average Humidity in Sinton

This chart illustrates the average monthly humidity levels in Sinton, 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 Sinton is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%76%77%80%73%66%65%73%76%80%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sinton

In Sinton in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Sinton.

Maximum UV Index Levels in Sinton for September

The chart shows the monthly maximum UV Index (UVI) for Sinton 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 Sinton typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5810111112121211975
Data source: Sinton 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 Sinton Compares to Other Months

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

This table compares monthly weather conditions in Sinton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (58°F)38 mm (1.5 inches)83%moderate
February Weather16°C (61°F)32 mm (1.2 inches)79%very high
March Weather20°C (68°F)62 mm (2.4 inches)76%very high
April Weather23°C (73°F)47 mm (1.9 inches)77%extreme
May Weather26°C (80°F)124 mm (4.9 inches)80%extreme
June Weather28°C (83°F)160 mm (6.3 inches)73%extreme
July Weather29°C (84°F)113 mm (4.5 inches)66%extreme
August Weather29°C (85°F)94 mm (3.7 inches)65%extreme
September Weather27°C (82°F)132 mm (5.2 inches)73%extreme
October Weather24°C (75°F)66 mm (2.6 inches)76%very high
November Weather19°C (66°F)56 mm (2.2 inches)80%high
December Weather16°C (61°F)50 mm (2.0 inches)86%moderate

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