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September Weather in Susticacan, Mexico

Last updated: August 27, 2025

In September, the average temperature in Susticacan, Mexico is a pleasant 18°C (65°F), with temperatures ranging from a cool 9°C (49°F) to a warm 28°C (82°F). Be prepared for some rain, as 125 mm (4.9 in) of precipitation typically falls over 17 days. Additionally, you can expect high humidity levels, averaging around 86%, contributing to a tropical ambiance.

September Temperature in Susticacan

In September in Susticacan, the average temperature is 18°C (65°F). Maximums can reach 28°C (82°F), and minimums can be as low as 9°C (49°F). This mild climate makes it an ideal time for outdoor activities and sightseeing in Susticacan.

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

The chart illustrates September temperature patterns in Susticacan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Susticacan, September typically has an average temperature of 18°C (65°F), with highs reaching up to 28°C (82°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec545863667070666764635955
Data source: Temperature data for Susticacan 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 Susticacan

In Susticacan in September, the precipitation amount is 125 mm (4.9 in) spread over 17 days.

September Precipitation Trends in Susticacan

The chart displays monthly precipitation patterns in Susticacan, 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 Susticacan, September typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec141143159417099126411410
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Susticacan

In Susticacan in September humidity is 86%. With an average temperature of 18°C (65°F), this humidity feels like you’re wrapped in a warm, heavy blanket, making outdoor activities feel quite muggy and sticky for traveling.

September Average Humidity in Susticacan

This chart illustrates the average monthly humidity levels in Susticacan, 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 Susticacan is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%64%49%47%55%77%82%83%86%83%80%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Susticacan

In Susticacan 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 Susticacan, you can check here.

Maximum UV Index Levels in Susticacan for September

The chart shows the monthly maximum UV Index (UVI) for Susticacan 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 Susticacan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9111315151414141412108
Data source: Susticacan 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 Susticacan Compares to Other Months

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

This table compares monthly weather conditions in Susticacan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)14 mm (0.5 inches)71%very high
February Weather14°C (58°F)11 mm (0.4 inches)64%extreme
March Weather17°C (64°F)4 mm (0.2 inches)49%extreme
April Weather19°C (67°F)3 mm (0.1 inches)47%extreme
May Weather21°C (70°F)15 mm (0.6 inches)55%extreme
June Weather21°C (71°F)94 mm (3.7 inches)77%extreme
July Weather19°C (67°F)170 mm (6.7 inches)82%extreme
August Weather19°C (67°F)99 mm (3.9 inches)83%extreme
September Weather18°C (65°F)125 mm (4.9 inches)86%extreme
October Weather17°C (64°F)40 mm (1.6 inches)83%extreme
November Weather15°C (60°F)14 mm (0.5 inches)80%very high
December Weather13°C (55°F)10 mm (0.4 inches)83%very high

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