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September Weather in San Pedro Viejo, Mexico

Last updated: August 27, 2025

In San Pedro Viejo, Mexico, the average temperature in September is a warm 30°C (87°F), making it an ideal time for outdoor activities. However, be prepared for a range, as temperatures can drop to a minimum of 19°C (67°F) and soar to a maximum of 43°C (109°F). During this month, expect 76 mm (3.0 in) of precipitation spread over approximately 11 days, contributing to a notably high average humidity of 82%.

September Temperature in San Pedro Viejo

In September in San Pedro Viejo, the average temperature is 30°C (87°F), with maximums reaching up to 43°C (109°F) and minimums dropping as low as 19°C (67°F). This range makes it essential for travelers to pack accordingly and stay hydrated while exploring the vibrant surroundings.

September Weather in San Pedro Viejo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Pedro Viejo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Pedro Viejo, September typically has an average temperature of 30°C (87°F), with highs reaching up to 43°C (109°F) and lows dropping to around 19°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec646670758087898886837466
Data source: Temperature data for San Pedro Viejo 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 San Pedro Viejo

In San Pedro Viejo in September, the total precipitation amount is 76 mm (3.0 in), recorded over a period of 11 days.

September Precipitation Trends in San Pedro Viejo

The chart displays monthly precipitation patterns in San Pedro Viejo, 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 San Pedro Viejo, September typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec15960018589076172819
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Pedro Viejo

In San Pedro Viejo in September humidity is 82%. With an average temperature of 30°C (87°F), this humidity feels like stepping into a warm, damp embrace, making traveling feel sticky and oppressive, as each breath carries the weight of the air, leaving you yearning for shade and cool breezes.

September Average Humidity in San Pedro Viejo

This chart illustrates the average monthly humidity levels in San Pedro Viejo, 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 San Pedro Viejo is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%67%60%51%47%50%70%82%82%78%78%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Pedro Viejo

In San Pedro Viejo 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 San Pedro Viejo.

Maximum UV Index Levels in San Pedro Viejo for September

The chart shows the monthly maximum UV Index (UVI) for San Pedro Viejo 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 San Pedro Viejo typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810121212121211975
Data source: San Pedro Viejo 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 San Pedro Viejo Compares to Other Months

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

This table compares monthly weather conditions in San Pedro Viejo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)15 mm (0.6 inches)74%high
February Weather19°C (66°F)9 mm (0.4 inches)67%very high
March Weather21°C (70°F)6 mm (0.2 inches)60%very high
April Weather24°C (75°F)0 mm (0.0 inches)51%extreme
May Weather27°C (80°F)0 mm (0.0 inches)47%extreme
June Weather30°C (87°F)18 mm (0.7 inches)50%extreme
July Weather32°C (89°F)58 mm (2.3 inches)70%extreme
August Weather31°C (89°F)90 mm (3.5 inches)81%extreme
September Weather30°C (87°F)76 mm (3.0 inches)82%extreme
October Weather28°C (83°F)17 mm (0.7 inches)78%very high
November Weather24°C (75°F)28 mm (1.1 inches)78%high
December Weather19°C (66°F)19 mm (0.7 inches)80%moderate

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