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December Weather in O Mon, Vietnam

Last updated: August 28, 2025

In December, the average temperature in O Mon, Vietnam reaches a pleasant 27°C (80°F), with minimums dipping to 20°C (68°F) and maximums soaring up to 33°C (92°F). Expect around 83 mm (3.3 in) of precipitation across 10 days, resulting in an average humidity of 85%. Enjoy the warm atmosphere, but don’t forget your umbrella!

December Temperature in O Mon

In December in O Mon, the average temperature is 27°C (80°F), with maximums reaching 33°C (92°F) and minimums dipping as low as 20°C (68°F). Be prepared for warm and pleasant weather, making it an ideal time for outdoor activities and exploration.

December Weather in O Mon: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in O Mon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In O Mon, December typically has an average temperature of 27°C (80°F), with highs reaching up to 33°C (92°F) and lows dropping to around 20°C (68°F).
JanFebMarAprMayJunJulAugSepOctNovDec798083848482828282818180
Data source: Temperature data for O Mon 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 O Mon

In O Mon in December, the total precipitation amount is 83 mm (3.3 in) over a span of 10 days.

December Precipitation Trends in O Mon

The chart displays monthly precipitation patterns in O Mon, 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 O Mon, December typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec48212911121925227627330528816683
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in O Mon

In O Mon in December, humidity is 85%. With an average temperature of 27°C (80°F), this humidity feels like a warm blanket wrapped around you, making travel feel sticky and heavy, but also inviting you to seek out refreshing drinks and cool shade.

December Average Humidity in O Mon

This chart illustrates the average monthly humidity levels in O Mon, 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 O Mon is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%75%76%78%80%82%83%85%85%83%86%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in O Mon

In O Mon in December, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in O Mon.

Maximum UV Index Levels in O Mon for December

The chart shows the monthly maximum UV Index (UVI) for O Mon 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 O Mon typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec101315141413131414131110
Data source: O Mon 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 O Mon Compares to Other Months

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

This table compares monthly weather conditions in O Mon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (80°F)48 mm (1.9 inches)77%very high
February Weather27°C (80°F)21 mm (0.8 inches)75%extreme
March Weather28°C (83°F)29 mm (1.1 inches)76%extreme
April Weather29°C (84°F)111 mm (4.4 inches)78%extreme
May Weather29°C (84°F)219 mm (8.6 inches)80%extreme
June Weather28°C (83°F)252 mm (9.9 inches)82%extreme
July Weather28°C (82°F)276 mm (10.8 inches)83%extreme
August Weather28°C (82°F)273 mm (10.8 inches)85%extreme
September Weather28°C (82°F)305 mm (12.0 inches)85%extreme
October Weather27°C (82°F)288 mm (11.3 inches)83%extreme
November Weather27°C (82°F)166 mm (6.5 inches)86%extreme
December Weather27°C (80°F)83 mm (3.3 inches)85%very high

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