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December Weather in Sai Mun, Thailand

Last updated: August 27, 2025

In Sai Mun, Thailand, the average temperature in December hovers around 24°C (75°F), offering a pleasant climate. However, temperatures can vary significantly, with minimums plummeting to 12°C (54°F) and maximums rising to 35°C (96°F). Expect a light precipitation of about 6 mm (0.3 in) over 1 day, and enjoy an average humidity level of 68%, creating a comfortable atmosphere for outdoor activities.

December Temperature in Sai Mun

In December in Sai Mun, the average temperature is 24°C (75°F). The maximum can reach 35°C (96°F) and the minimum can be as low as 12°C (54°F). This weather makes it ideal for travelers seeking pleasant, warm conditions with opportunities to enjoy both the sun and cooler evenings.

December Weather in Sai Mun: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Sai Mun, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sai Mun, December typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (96°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec767783848584838282817975
Data source: Temperature data for Sai Mun 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 Sai Mun

In Sai Mun in December, the precipitation amount is 6 mm (0.3 in) over the course of 1 day.

December Precipitation Trends in Sai Mun

The chart displays monthly precipitation patterns in Sai Mun, 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 Sai Mun, December typically receives around 6 mm (0.3 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec393161152166319262295166267
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sai Mun

In Sai Mun in December, humidity is 68%. With an average temperature of 24°C (75°F), this humidity feels like a warm, enveloping embrace that can leave travelers feeling sticky and slightly fatigued, making it essential to stay hydrated and take breaks in shaded areas.

December Average Humidity in Sai Mun

This chart illustrates the average monthly humidity levels in Sai Mun, 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 Sai Mun is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec56%50%41%44%71%84%87%90%89%83%74%68%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Sai Mun

In Sai Mun 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 Sai Mun.

Maximum UV Index Levels in Sai Mun for December

The chart shows the monthly maximum UV Index (UVI) for Sai Mun 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 Sai Mun typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10131415151315141412109
Data source: Sai Mun 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 Sai Mun Compares to Other Months

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

This table compares monthly weather conditions in Sai Mun, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)3 mm (0.1 inches)56%very high
February Weather25°C (78°F)9 mm (0.4 inches)50%extreme
March Weather28°C (84°F)31 mm (1.2 inches)41%extreme
April Weather29°C (85°F)61 mm (2.4 inches)44%extreme
May Weather29°C (85°F)152 mm (6.0 inches)71%extreme
June Weather29°C (85°F)166 mm (6.6 inches)83%extreme
July Weather28°C (83°F)319 mm (12.5 inches)87%extreme
August Weather28°C (83°F)262 mm (10.3 inches)90%extreme
September Weather28°C (83°F)295 mm (11.6 inches)89%extreme
October Weather27°C (81°F)166 mm (6.5 inches)83%extreme
November Weather26°C (79°F)26 mm (1.0 inches)74%very high
December Weather24°C (75°F)6 mm (0.3 inches)68%very high

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