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December Weather in San Sai, Thailand

Last updated: August 27, 2025

In San Sai, Thailand, the average temperature in December hovers around 21°C (71°F). Expect a pleasant range, with minimums dipping to 6°C (43°F) and maximums soaring to 33°C (91°F). During this period, you can anticipate a total precipitation of 13 mm (0.5 in) over a single day, along with an average humidity level of 56%. Enjoy the mild climate!

December Temperature in San Sai

In December in San Sai, the average temperature is 21°C (71°F). The maximum can reach 33°C (91°F) and the minimum can be as low as 6°C (43°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities in San Sai.

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

The chart illustrates December temperature patterns in San Sai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Sai, December typically has an average temperature of 21°C (71°F), with highs reaching up to 33°C (91°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec727582848684828181797670
Data source: Temperature data for San Sai 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 Sai

In San Sai in December, the precipitation amount is 13 mm (0.5 in) over the course of 1 day.

December Precipitation Trends in San Sai

The chart displays monthly precipitation patterns in San Sai, 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 Sai, December typically receives around 13 mm (0.5 inches) of precipitation spread over approximately 1 days.
JanFebMarAprMayJunJulAugSepOctNovDec102142821452182681981562413
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in San Sai

In San Sai in December, humidity is 56%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls and outdoor exploration, albeit with a slight stickiness that may encourage travelers to seek shade during the midday sun.

December Average Humidity in San Sai

This chart illustrates the average monthly humidity levels in San Sai, 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 Sai is approximately 56%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec51%46%38%36%64%81%83%91%83%67%61%56%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in San Sai

In San Sai in December, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in San Sai.

Maximum UV Index Levels in San Sai for December

The chart shows the monthly maximum UV Index (UVI) for San Sai 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 Sai typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9101313141414141413108
Data source: San Sai 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 Sai Compares to Other Months

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

This table compares monthly weather conditions in San Sai, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)10 mm (0.4 inches)51%very high
February Weather24°C (75°F)2 mm (0.1 inches)46%very high
March Weather28°C (82°F)1 mm (0.1 inches)38%extreme
April Weather29°C (85°F)42 mm (1.7 inches)36%extreme
May Weather30°C (86°F)82 mm (3.2 inches)63%extreme
June Weather29°C (84°F)145 mm (5.7 inches)81%extreme
July Weather28°C (83°F)218 mm (8.6 inches)83%extreme
August Weather27°C (81°F)268 mm (10.5 inches)91%extreme
September Weather27°C (81°F)198 mm (7.8 inches)83%extreme
October Weather26°C (80°F)156 mm (6.1 inches)67%extreme
November Weather25°C (77°F)24 mm (0.9 inches)60%very high
December Weather21°C (71°F)13 mm (0.5 inches)56%very high

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