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January Weather in San Mateo, Guatemala

Last updated: August 23, 2025

In January, the average temperature in San Mateo, Guatemala is a comfortable 17°C (63°F), with lows dipping to 10°C (51°F) and highs reaching up to 24°C (75°F). Expect some light rain, as 32 mm (1.2 in) of precipitation is typically recorded over 9 days. The air carries a average humidity of 76%, making it a pleasantly cool and refreshing time to visit!

January Temperature in San Mateo

In January in San Mateo, the average temperature is 17°C (63°F). The maximum can reach 24°C (75°F), and the minimum can be as low as 10°C (51°F). This mild climate makes it an ideal time for travelers to explore the vibrant surroundings and enjoy outdoor activities.

January Weather in San Mateo: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Mateo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Mateo, January typically has an average temperature of 17°C (63°F), with highs reaching up to 24°C (75°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec636364646565666565656463
Data source: Temperature data for San Mateo 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.

January Precipitation in San Mateo

In San Mateo in January, the total precipitation amount is 32 mm (1.2 in), distributed over a span of 9 days.

January Precipitation Trends in San Mateo

The chart displays monthly precipitation patterns in San Mateo, 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 San Mateo, January typically receives around 32 mm (1.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec325911024664447725841445737312248
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in San Mateo

In San Mateo in January humidity is 76%. With an average temperature of 17°C (63°F), this humidity feels like traveling through a warm, enveloping blanket, making every outdoor adventure feel sticky and heavy, yet pleasantly refreshing when you find a cool breeze.

January Average Humidity in San Mateo

This chart illustrates the average monthly humidity levels in San Mateo, 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 San Mateo 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 San Mateo

In San Mateo 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 San Mateo.

Maximum UV Index Levels in San Mateo for January

The chart shows the monthly maximum UV Index (UVI) for San Mateo 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 San Mateo typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131415141414141413119
Data source: San Mateo 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 San Mateo Compares to Other Months

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

This table compares monthly weather conditions in San Mateo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)32 mm (1.2 inches)76%extreme
February Weather17°C (63°F)59 mm (2.3 inches)68%extreme
March Weather18°C (64°F)110 mm (4.3 inches)59%extreme
April Weather18°C (65°F)246 mm (9.7 inches)57%extreme
May Weather18°C (65°F)644 mm (25.4 inches)65%extreme
June Weather18°C (65°F)477 mm (18.8 inches)66%extreme
July Weather19°C (66°F)258 mm (10.2 inches)75%extreme
August Weather18°C (65°F)414 mm (16.3 inches)82%extreme
September Weather18°C (65°F)457 mm (18.0 inches)82%extreme
October Weather18°C (65°F)373 mm (14.7 inches)83%extreme
November Weather18°C (64°F)122 mm (4.8 inches)80%extreme
December Weather17°C (63°F)48 mm (1.9 inches)76%very high

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