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September Weather in Primero de Mayo, Mexico

Last updated: August 27, 2025

In Primero de Mayo, Mexico, the average temperature in September hovers around 20°C (68°F), making it a delightful time to visit. Expect minimum temperatures of 13°C (55°F) and highs reaching up to 28°C (82°F). However, be prepared for precipitation that totals 232 mm (9.1 in) over 24 days, accompanied by an average humidity of 77%. Embrace the refreshing atmosphere while exploring this vibrant destination!

September Temperature in Primero de Mayo

In September in Primero de Mayo, the average temperature is 20°C (68°F). Maximums can reach 28°C (82°F), and minimums can be as low as 13°C (55°F). This pleasant weather makes it an ideal time to explore Primero de Mayo.

September Weather in Primero de Mayo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Primero de Mayo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Primero de Mayo, September typically has an average temperature of 20°C (68°F), with highs reaching up to 28°C (82°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec626465697068686868676462
Data source: Temperature data for Primero de Mayo 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 Primero de Mayo

In Primero de Mayo in September, the total precipitation amount is 232 mm (9.1 in) spread over 24 days.

September Precipitation Trends in Primero de Mayo

The chart displays monthly precipitation patterns in Primero de Mayo, 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 Primero de Mayo, September typically receives around 232 mm (9.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec23161438157260911602321865518
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Primero de Mayo

In Primero de Mayo in September, humidity is 77%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace, making it essential for travelers to stay hydrated and take breaks in shaded areas to avoid feeling sluggish in the heat.

September Average Humidity in Primero de Mayo

This chart illustrates the average monthly humidity levels in Primero de Mayo, 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 Primero de Mayo is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%73%59%53%54%55%61%71%77%78%82%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Primero de Mayo

In Primero de Mayo in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Primero de Mayo, you can check here.

Maximum UV Index Levels in Primero de Mayo for September

The chart shows the monthly maximum UV Index (UVI) for Primero de Mayo 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 Primero de Mayo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315151515151414131110
Data source: Primero de Mayo 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 Primero de Mayo Compares to Other Months

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

This table compares monthly weather conditions in Primero de Mayo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (62°F)23 mm (0.9 inches)84%extreme
February Weather18°C (64°F)15 mm (0.6 inches)73%extreme
March Weather18°C (66°F)14 mm (0.6 inches)59%extreme
April Weather21°C (69°F)38 mm (1.5 inches)52%extreme
May Weather21°C (70°F)157 mm (6.2 inches)53%extreme
June Weather20°C (68°F)260 mm (10.2 inches)55%extreme
July Weather20°C (68°F)91 mm (3.6 inches)61%extreme
August Weather20°C (68°F)159 mm (6.3 inches)71%extreme
September Weather20°C (68°F)232 mm (9.1 inches)77%extreme
October Weather19°C (67°F)186 mm (7.3 inches)78%extreme
November Weather18°C (65°F)54 mm (2.1 inches)82%extreme
December Weather17°C (63°F)18 mm (0.7 inches)86%very high

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