nomadseason

January Weather in Casillas, Guatemala

Last updated: August 23, 2025

In January, the average temperature in Casillas, Guatemala is a pleasant 18°C (64°F). However, temperatures can vary significantly, with minimums dipping to 8°C (46°F) and maximums soaring to 30°C (86°F). Expect light precipitation, averaging around 8 mm (0.3 in) over 2 days, and a comfortable average humidity of 76%. Enjoy the mild climate!

January Temperature in Casillas

In January in Casillas, the average temperature is 18°C (64°F). Maximums can reach 30°C (86°F) and minimums can be as low as 8°C (46°F). This pleasant temperature range makes it an ideal time for travelers to explore and enjoy outdoor activities in Casillas.

January Weather in Casillas: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Casillas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Casillas, January typically has an average temperature of 18°C (64°F), with highs reaching up to 30°C (86°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec646668706968686868676664
Data source: Temperature data for Casillas generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Casillas

In Casillas in January, the precipitation amount is 8 mm (0.3 in) over the course of 2 days.

January Precipitation Trends in Casillas

The chart displays monthly precipitation patterns in Casillas, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Casillas, January typically receives around 8 mm (0.3 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec997622573781712583142875217
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Casillas

In Casillas in January, humidity is 76%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel steamy and invigorating—perfect for exploring charming streets, though you might want to take breaks in the shade.

January Average Humidity in Casillas

This chart illustrates the average monthly humidity levels in Casillas, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Casillas is approximately 76%, 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 January generated using information from the Copernicus Climate Change Service.

January UV Index in Casillas

In Casillas in January, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Casillas.

Maximum UV Index Levels in Casillas for January

The chart shows the monthly maximum UV Index (UVI) for Casillas in January, 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 January, the maximum UV index in Casillas typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111314151414141414131010
Data source: Casillas January 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 January Weather in Casillas Compares to Other Months

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

This table compares monthly weather conditions in Casillas, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)8 mm (0.3 inches)76%extreme
February Weather19°C (66°F)9 mm (0.4 inches)68%extreme
March Weather20°C (68°F)7 mm (0.3 inches)59%extreme
April Weather21°C (70°F)62 mm (2.5 inches)57%extreme
May Weather21°C (69°F)257 mm (10.1 inches)65%extreme
June Weather20°C (68°F)378 mm (14.9 inches)66%extreme
July Weather20°C (68°F)170 mm (6.7 inches)75%extreme
August Weather20°C (68°F)258 mm (10.2 inches)82%extreme
September Weather20°C (68°F)314 mm (12.4 inches)82%extreme
October Weather19°C (67°F)287 mm (11.3 inches)83%extreme
November Weather19°C (66°F)52 mm (2.0 inches)80%very high
December Weather18°C (65°F)17 mm (0.7 inches)76%very high

Compare Casillas's Climate with Cities Worldwide