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September Weather in San Pedro, Mexico

Last updated: August 27, 2025

In San Pedro, Mexico, the average temperature in September hovers around 27°C (81°F). However, be prepared for a range of temperatures, with a minimum of 16°C (62°F) and a scorching maximum of 39°C (103°F). During this time, you can expect precipitation of around 33 mm (1.3 in) occurring over 5 days, and a notable average humidity level of 82%. Stay hydrated and enjoy the warmth!

September Temperature in San Pedro

In September in San Pedro, the average temperature is 27°C (81°F). Maximum temperatures can reach 39°C (103°F), while the minimum can drop to as low as 16°C (62°F). This range makes it an ideal time for travelers to enjoy both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in San Pedro, 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, September typically has an average temperature of 27°C (81°F), with highs reaching up to 39°C (103°F) and lows dropping to around 16°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec596672798586858580756761
Data source: Temperature data for San Pedro 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

In San Pedro in September, the precipitation amount is 33 mm (1.3 in) over the course of 5 days.

September Precipitation Trends in San Pedro

The chart displays monthly precipitation patterns in San Pedro, 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, September typically receives around 33 mm (1.3 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec45924122283325511
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Pedro

In San Pedro in September humidity is 82%. With an average temperature of 27°C (81°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel more exhausting, and leaving you longing for the relief of air-conditioned spaces during your travels.

September Average Humidity in San Pedro

This chart illustrates the average monthly humidity levels in San Pedro, 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 is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%62%53%48%52%64%73%71%82%83%82%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Pedro

In San Pedro in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Pedro.

Maximum UV Index Levels in San Pedro for September

The chart shows the monthly maximum UV Index (UVI) for San Pedro 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 typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec710121313131313131187
Data source: San Pedro 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 Compares to Other Months

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

This table compares monthly weather conditions in San Pedro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)4 mm (0.1 inches)70%high
February Weather19°C (67°F)5 mm (0.2 inches)62%very high
March Weather22°C (73°F)9 mm (0.3 inches)53%extreme
April Weather26°C (79°F)2 mm (0.1 inches)48%extreme
May Weather29°C (85°F)4 mm (0.2 inches)52%extreme
June Weather30°C (86°F)12 mm (0.5 inches)64%extreme
July Weather29°C (85°F)22 mm (0.9 inches)73%extreme
August Weather30°C (85°F)8 mm (0.3 inches)71%extreme
September Weather27°C (81°F)33 mm (1.3 inches)82%extreme
October Weather24°C (76°F)24 mm (1.0 inches)83%extreme
November Weather19°C (67°F)5 mm (0.2 inches)82%very high
December Weather16°C (61°F)11 mm (0.4 inches)84%high

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