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September Weather in San Juan Atitan, Guatemala

Last updated: August 23, 2025

In September, the average temperature in San Juan Atitan, Guatemala is a mild 15°C (59°F), with a comfortable range between a minimum of 7°C (45°F) and a maximum of 23°C (74°F). Expect rain with an average precipitation of 239 mm (9.4 in) spread over 26 days, resulting in a humid atmosphere with an average humidity level of 82%.

September Temperature in San Juan Atitan

In September, in San Juan Atitan, the average temperature is 15°C (59°F). Maximums can reach 23°C (74°F), while minimums can drop as low as 7°C (45°F). This pleasant range makes San Juan Atitan an ideal destination for travelers seeking comfortable weather.

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

The chart illustrates September temperature patterns in San Juan Atitan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan Atitan, September typically has an average temperature of 15°C (59°F), with highs reaching up to 23°C (74°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec545657606059595959595755
Data source: Temperature data for San Juan Atitan 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 Juan Atitan

In San Juan Atitan in September, the precipitation amount is 239 mm (9.4 in) over a span of 26 days.

September Precipitation Trends in San Juan Atitan

The chart displays monthly precipitation patterns in San Juan Atitan, 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 Juan Atitan, September typically receives around 239 mm (9.4 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec3324251082743221362152392409929
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Juan Atitan

In San Juan Atitan in September, humidity is 82%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and uncomfortable for travelers.

September Average Humidity in San Juan Atitan

This chart illustrates the average monthly humidity levels in San Juan Atitan, 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 Juan Atitan 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 Juan Atitan

In San Juan Atitan in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in San Juan Atitan.

Maximum UV Index Levels in San Juan Atitan for September

The chart shows the monthly maximum UV Index (UVI) for San Juan Atitan 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 Juan Atitan typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111315161515151515131110
Data source: San Juan Atitan 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 Juan Atitan Compares to Other Months

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

This table compares monthly weather conditions in San Juan Atitan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (55°F)33 mm (1.3 inches)76%extreme
February Weather13°C (56°F)24 mm (0.9 inches)68%extreme
March Weather14°C (58°F)25 mm (1.0 inches)59%extreme
April Weather15°C (60°F)108 mm (4.3 inches)57%extreme
May Weather16°C (60°F)274 mm (10.8 inches)65%extreme
June Weather15°C (60°F)322 mm (12.7 inches)66%extreme
July Weather15°C (59°F)136 mm (5.4 inches)75%extreme
August Weather15°C (59°F)215 mm (8.4 inches)82%extreme
September Weather15°C (59°F)239 mm (9.4 inches)82%extreme
October Weather15°C (59°F)239 mm (9.4 inches)83%extreme
November Weather14°C (57°F)99 mm (3.9 inches)80%extreme
December Weather13°C (55°F)29 mm (1.1 inches)76%very high

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