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September Weather in Santa Lucia, Mexico

Last updated: August 27, 2025

In September, the average temperature in Santa Lucia, Mexico hovers around 21°C (70°F), offering a pleasant climate for outdoor activities. You can expect a minimum temperature of 14°C (57°F), with highs reaching up to 31°C (88°F). However, be prepared for some rain, as precipitation averages 224 mm (8.8 in) over 28 days. With an average humidity of 83%, the air is sure to feel warm and tropical!

September Temperature in Santa Lucia

In September in Santa Lucia, the average temperature is 21°C (70°F). Maximums can reach 31°C (88°F) and minimums can be as low as 14°C (57°F). This pleasant climate makes Santa Lucia an ideal destination for travelers looking to enjoy mild weather and outdoor activities.

September Weather in Santa Lucia: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Lucia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Lucia, September typically has an average temperature of 21°C (70°F), with highs reaching up to 31°C (88°F) and lows dropping to around 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec586064677072707170696459
Data source: Temperature data for Santa Lucia 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 Santa Lucia

In Santa Lucia in September, the total precipitation amount is 224 mm (8.8 in) that falls over the course of 28 days.

September Precipitation Trends in Santa Lucia

The chart displays monthly precipitation patterns in Santa Lucia, 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 Santa Lucia, September typically receives around 224 mm (8.8 inches) of precipitation spread over approximately 28 days.
JanFebMarAprMayJunJulAugSepOctNovDec203643161483263182241132037
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Lucia

In Santa Lucia in September humidity is 83%. With an average temperature of 21°C (70°F), this humidity feels like you’re enveloped in a warm, tropical embrace, making it essential to stay hydrated and take breaks during your travels.

September Average Humidity in Santa Lucia

This chart illustrates the average monthly humidity levels in Santa Lucia, 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 Santa Lucia is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%66%61%56%61%73%82%83%83%79%77%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Lucia

In Santa Lucia 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 Santa Lucia.

Maximum UV Index Levels in Santa Lucia for September

The chart shows the monthly maximum UV Index (UVI) for Santa Lucia 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 Santa Lucia typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811121414131313131297
Data source: Santa Lucia 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 Santa Lucia Compares to Other Months

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

This table compares monthly weather conditions in Santa Lucia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)20 mm (0.8 inches)74%very high
February Weather16°C (61°F)36 mm (1.4 inches)66%extreme
March Weather18°C (64°F)4 mm (0.2 inches)61%extreme
April Weather19°C (67°F)3 mm (0.1 inches)56%extreme
May Weather21°C (71°F)16 mm (0.6 inches)61%extreme
June Weather22°C (72°F)147 mm (5.8 inches)73%extreme
July Weather21°C (71°F)325 mm (12.8 inches)82%extreme
August Weather22°C (71°F)318 mm (12.5 inches)83%extreme
September Weather21°C (70°F)224 mm (8.8 inches)83%extreme
October Weather21°C (69°F)113 mm (4.4 inches)78%extreme
November Weather18°C (64°F)20 mm (0.8 inches)77%very high
December Weather15°C (60°F)37 mm (1.5 inches)78%high

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