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December Weather in Oyama, Mexico

Last updated: August 27, 2025

The average temperature in Oyama, Mexico during December is a comfortable 18°C (65°F). However, be prepared for a temperature range that can swing from a crisp 0°C (32°F) to a warm 34°C (93°F). Expect some light rain, with an average precipitation of 14 mm (0.5 in) falling over 2 days. Don't forget, the air can feel quite humid, with an average humidity level of 86%.

December Temperature in Oyama

In December in Oyama, the average temperature is 18°C (65°F). Maximums can reach 34°C (93°F), and minimums can be as low as 0°C (32°F). It's wise to prepare for a range of temperatures when traveling to Oyama during this time.

December Weather in Oyama: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Oyama, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oyama, December typically has an average temperature of 18°C (65°F), with highs reaching up to 34°C (93°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec636773788385868782776965
Data source: Temperature data for Oyama 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 Oyama

In Oyama in December, the precipitation amount reaches 14 mm (0.5 in) over a span of 2 days.

December Precipitation Trends in Oyama

The chart displays monthly precipitation patterns in Oyama, 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 Oyama, December typically receives around 14 mm (0.5 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec1814285673626021124611814
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Oyama

In Oyama in December humidity is 86%. With an average temperature of 18°C (65°F), this humidity feels like you’re wrapped in a warm, heavy blanket, making outdoor activities feel quite muggy and sticky for traveling.

December Average Humidity in Oyama

This chart illustrates the average monthly humidity levels in Oyama, 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 Oyama is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%78%81%82%74%68%67%75%78%83%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Oyama

In Oyama in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Oyama, you can refer to this Hourly UV Index in Oyama.

Maximum UV Index Levels in Oyama for December

The chart shows the monthly maximum UV Index (UVI) for Oyama 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 Oyama typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec79111212121212121086
Data source: Oyama 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 Oyama Compares to Other Months

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

This table compares monthly weather conditions in Oyama, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)18 mm (0.7 inches)84%high
February Weather19°C (67°F)14 mm (0.5 inches)83%very high
March Weather23°C (73°F)28 mm (1.1 inches)78%extreme
April Weather25°C (78°F)56 mm (2.2 inches)81%extreme
May Weather28°C (83°F)73 mm (2.9 inches)82%extreme
June Weather29°C (85°F)62 mm (2.4 inches)74%extreme
July Weather30°C (86°F)60 mm (2.4 inches)68%extreme
August Weather30°C (87°F)21 mm (0.8 inches)67%extreme
September Weather28°C (82°F)124 mm (4.9 inches)75%extreme
October Weather25°C (77°F)61 mm (2.4 inches)78%very high
November Weather21°C (69°F)17 mm (0.7 inches)83%very high
December Weather18°C (65°F)14 mm (0.5 inches)86%high

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