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December Weather in San Francisco Coatlan, Mexico

Last updated: August 27, 2025

In December, the average temperature in San Francisco Coatlan, Mexico is a comfortable 18°C (65°F). Temperatures can vary, dipping to a cool 8°C (46°F) and soaring to a warm 29°C (85°F). Visitors can expect around 17 mm (0.7 in) of precipitation spread over 4 days, along with a high average humidity of 88%.

December Temperature in San Francisco Coatlan

In December in San Francisco Coatlan, the average temperature is 18°C (65°F). Maximums can reach 29°C (85°F), while minimums can drop as low as 8°C (46°F). This pleasant range makes it an ideal time for travel, allowing for comfortable exploration and outdoor activities.

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

The chart illustrates December temperature patterns in San Francisco Coatlan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Francisco Coatlan, December typically has an average temperature of 18°C (65°F), with highs reaching up to 29°C (85°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec646668707068686868686664
Data source: Temperature data for San Francisco Coatlan 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 Francisco Coatlan

In San Francisco Coatlan in December, the precipitation amount is 17 mm (0.7 in) over a span of 4 days.

December Precipitation Trends in San Francisco Coatlan

The chart displays monthly precipitation patterns in San Francisco Coatlan, 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 Francisco Coatlan, December typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 4 days.
JanFebMarAprMayJunJulAugSepOctNovDec171020532164313024484412432217
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Francisco Coatlan

In San Francisco Coatlan in December, humidity is 88%. With an average temperature of 18°C (65°F), this humidity feels like a warm blanket wrapping around you, making travel feel slightly sticky and the air thick, which can be quite tiring when exploring the area.

December Average Humidity in San Francisco Coatlan

This chart illustrates the average monthly humidity levels in San Francisco Coatlan, 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 Francisco Coatlan is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%73%67%72%73%76%80%84%89%88%88%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Francisco Coatlan

In San Francisco Coatlan in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Francisco Coatlan.

Maximum UV Index Levels in San Francisco Coatlan for December

The chart shows the monthly maximum UV Index (UVI) for San Francisco Coatlan 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 Francisco Coatlan typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec11131515151515141413119
Data source: San Francisco Coatlan 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 Francisco Coatlan Compares to Other Months

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

This table compares monthly weather conditions in San Francisco Coatlan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)17 mm (0.7 inches)84%extreme
February Weather19°C (66°F)10 mm (0.4 inches)80%extreme
March Weather20°C (68°F)20 mm (0.8 inches)73%extreme
April Weather21°C (70°F)53 mm (2.1 inches)67%extreme
May Weather21°C (70°F)216 mm (8.5 inches)72%extreme
June Weather20°C (69°F)431 mm (17.0 inches)73%extreme
July Weather20°C (69°F)302 mm (11.9 inches)76%extreme
August Weather20°C (68°F)448 mm (17.7 inches)80%extreme
September Weather20°C (68°F)441 mm (17.3 inches)84%extreme
October Weather20°C (68°F)243 mm (9.6 inches)89%extreme
November Weather19°C (67°F)22 mm (0.8 inches)88%extreme
December Weather18°C (65°F)17 mm (0.7 inches)88%very high

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