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September Weather in San Carlos Alzatate, Guatemala

Last updated: August 23, 2025

In San Carlos Alzatate, Guatemala, the average temperature in September hovers around 21°C (70°F), with daytime highs peaking at 29°C (85°F) and lows dipping to 15°C (59°F). Expect a whopping 253 mm (10.0 in) of precipitation spread over 27 days, resulting in an average humidity of 82%. Prepare for a delightful yet humid month!

September Temperature in San Carlos Alzatate

In September in San Carlos Alzatate, the average temperature is 21°C (70°F). Maximums can reach 29°C (85°F), while minimums can drop to as low as 15°C (59°F). This pleasant climate makes it an ideal time for travelers to explore outdoor activities and enjoy the local attractions.

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

The chart illustrates September temperature patterns in San Carlos Alzatate, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Carlos Alzatate, September typically has an average temperature of 21°C (70°F), with highs reaching up to 29°C (85°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec656769717170707069696765
Data source: Temperature data for San Carlos Alzatate 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 Carlos Alzatate

In San Carlos Alzatate in September, the precipitation amount is 253 mm (10.0 in) during a period of 27 days.

September Precipitation Trends in San Carlos Alzatate

The chart displays monthly precipitation patterns in San Carlos Alzatate, 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 Carlos Alzatate, September typically receives around 253 mm (10.0 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec546642252951592192532334911
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Carlos Alzatate

In San Carlos Alzatate in September, humidity is 82%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace that can quickly lead to discomfort for travelers, making outdoor activities less enjoyable and requiring frequent breaks for hydration.

September Average Humidity in San Carlos Alzatate

This chart illustrates the average monthly humidity levels in San Carlos Alzatate, 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 Carlos Alzatate is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%68%59%57%65%66%75%82%82%83%80%76%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Carlos Alzatate

In San Carlos Alzatate 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 San Carlos Alzatate, you can check here.

Maximum UV Index Levels in San Carlos Alzatate for September

The chart shows the monthly maximum UV Index (UVI) for San Carlos Alzatate 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 Carlos Alzatate typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315151414141414131010
Data source: San Carlos Alzatate 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 Carlos Alzatate Compares to Other Months

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

This table compares monthly weather conditions in San Carlos Alzatate, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)5 mm (0.2 inches)76%extreme
February Weather19°C (67°F)4 mm (0.2 inches)68%extreme
March Weather20°C (69°F)6 mm (0.2 inches)59%extreme
April Weather22°C (71°F)64 mm (2.5 inches)57%extreme
May Weather22°C (71°F)225 mm (8.8 inches)65%extreme
June Weather21°C (70°F)295 mm (11.6 inches)66%extreme
July Weather21°C (70°F)159 mm (6.3 inches)75%extreme
August Weather21°C (70°F)219 mm (8.6 inches)82%extreme
September Weather21°C (70°F)253 mm (10.0 inches)82%extreme
October Weather20°C (69°F)233 mm (9.2 inches)83%extreme
November Weather19°C (67°F)49 mm (1.9 inches)80%very high
December Weather18°C (65°F)11 mm (0.5 inches)76%very high

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