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September Weather in Frontera, Mexico

Last updated: August 27, 2025

In Frontera, Mexico, the average temperature in September is a pleasant 26°C (80°F). However, be prepared for fluctuations, as temperatures can dip to a minimum of 15°C (58°F) and soar up to a scorching 40°C (104°F). Expect some rain, with an average precipitation of 107 mm (4.2 in) over 11 days, accompanied by an average humidity of 77%.

September Temperature in Frontera

In September in Frontera, the average temperature is 26°C (80°F), with maximums reaching up to 40°C (104°F) and minimums dropping as low as 15°C (58°F). This makes it a great time to visit for those who enjoy warm weather and mild evenings.

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

The chart illustrates September temperature patterns in Frontera, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Frontera, September typically has an average temperature of 26°C (80°F), with highs reaching up to 40°C (104°F) and lows dropping to around 15°C (58°F).
JanFebMarAprMayJunJulAugSepOctNovDec566170768285858680736459
Data source: Temperature data for Frontera 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 Frontera

In Frontera in September, the precipitation amount is 107 mm (4.2 in) spread over a period of 11 days.

September Precipitation Trends in Frontera

The chart displays monthly precipitation patterns in Frontera, 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 Frontera, September typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec87141434306133107391517
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Frontera

In Frontera in September, humidity is 77%. With an average temperature of 26°C (80°F), this humidity feels like walking through a warm, damp blanket, making traveling somewhat uncomfortable and necessitating frequent breaks to stay hydrated and cool.

September Average Humidity in Frontera

This chart illustrates the average monthly humidity levels in Frontera, 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 Frontera is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%74%75%74%79%77%64%61%77%83%85%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Frontera

In Frontera in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Frontera.

Maximum UV Index Levels in Frontera for September

The chart shows the monthly maximum UV Index (UVI) for Frontera 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 Frontera typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec69101212121212121076
Data source: Frontera 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 Frontera Compares to Other Months

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

This table compares monthly weather conditions in Frontera, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (57°F)8 mm (0.3 inches)83%high
February Weather16°C (62°F)7 mm (0.3 inches)74%very high
March Weather21°C (70°F)14 mm (0.6 inches)75%very high
April Weather24°C (76°F)14 mm (0.6 inches)74%extreme
May Weather28°C (83°F)34 mm (1.3 inches)79%extreme
June Weather30°C (86°F)30 mm (1.2 inches)77%extreme
July Weather30°C (86°F)61 mm (2.4 inches)64%extreme
August Weather30°C (86°F)33 mm (1.3 inches)61%extreme
September Weather26°C (80°F)107 mm (4.2 inches)77%extreme
October Weather23°C (73°F)39 mm (1.5 inches)83%very high
November Weather18°C (64°F)15 mm (0.6 inches)85%high
December Weather15°C (59°F)17 mm (0.7 inches)89%high

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