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December Weather in San Ignacio, Mexico

Last updated: August 26, 2025

In December, the average temperature in San Ignacio, Mexico is a comfortable 12°C (54°F). However, temperatures can vary significantly, with a minimum of -2°C (29°F) and a maximum of 27°C (80°F). Expect about 31 mm (1.2 in) of precipitation over 4 days, and enjoy the moderately high average humidity of 81%.

December Temperature in San Ignacio

In December in San Ignacio, the average temperature is 12°C (54°F). Maximums can reach 27°C (80°F), while minimums can drop as low as -2°C (29°F). Be sure to pack accordingly for a mix of cool and warm weather during your travels!

December Weather in San Ignacio: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in San Ignacio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Ignacio, December typically has an average temperature of 12°C (54°F), with highs reaching up to 27°C (80°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec525460697585838279726354
Data source: Temperature data for San Ignacio 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.

December Precipitation in San Ignacio

In San Ignacio in December, the total precipitation amount is 31 mm (1.2 in) over a span of 4 days.

December Precipitation Trends in San Ignacio

The chart displays monthly precipitation patterns in San Ignacio, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In San Ignacio, December typically receives around 31 mm (1.2 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec424027338956358154231
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Ignacio

In San Ignacio in December humidity is 81%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket enveloping you, making travel sluggish and uncomfortable as you battle the stickiness while trying to enjoy your surroundings.

December Average Humidity in San Ignacio

This chart illustrates the average monthly humidity levels in San Ignacio, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in San Ignacio is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%71%60%43%32%28%38%60%72%66%74%81%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Ignacio

In San Ignacio in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in San Ignacio.

Maximum UV Index Levels in San Ignacio for December

The chart shows the monthly maximum UV Index (UVI) for San Ignacio in December, 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 December, the maximum UV index in San Ignacio typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec5710121212121211965
Data source: San Ignacio December 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 December Weather in San Ignacio Compares to Other Months

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

This table compares monthly weather conditions in San Ignacio, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather11°C (53°F)42 mm (1.6 inches)74%moderate
February Weather12°C (54°F)40 mm (1.6 inches)71%high
March Weather16°C (60°F)27 mm (1.1 inches)60%very high
April Weather21°C (69°F)3 mm (0.1 inches)43%extreme
May Weather24°C (75°F)3 mm (0.1 inches)32%extreme
June Weather29°C (85°F)8 mm (0.3 inches)28%extreme
July Weather28°C (83°F)95 mm (3.7 inches)38%extreme
August Weather28°C (83°F)63 mm (2.5 inches)60%extreme
September Weather26°C (79°F)58 mm (2.3 inches)72%extreme
October Weather22°C (72°F)14 mm (0.6 inches)66%very high
November Weather17°C (64°F)42 mm (1.7 inches)74%high
December Weather12°C (54°F)31 mm (1.2 inches)81%moderate

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