December Weather in Si Nakhon, Thailand

Last updated: August 27, 2025

In December, the average temperature in Si Nakhon, Thailand hovers around 25°C (78°F), making it a delightful time to explore. Temperatures can vary, dipping to a cool 12°C (54°F) at night or soaring up to a sizzling 37°C (98°F) during the day. Expect about 14 mm (0.6 in) of precipitation spread over 2 days, with an average humidity level of 55%. Whatever your plans, be sure to enjoy the diverse climate this month has to offer!

December Temperature in Si Nakhon

In December in Si Nakhon, the average temperature is 25°C (78°F). Maximums can reach 37°C (98°F) and minimums can be as low as 12°C (54°F). This range makes it a perfect time to explore and enjoy outdoor activities in Si Nakhon.

December Weather in Si Nakhon: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Si Nakhon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Si Nakhon, December typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (98°F) and lows dropping to around 12°C (54°F).

Data source: Temperature data for Si Nakhon generated using information from the Copernicus Climate Change Service.

December Precipitation in Si Nakhon

In Si Nakhon in December, the precipitation amount is 14 mm (0.6 in) over a period of 2 days.

December Precipitation Trends in Si Nakhon

The chart displays monthly precipitation patterns in Si Nakhon, 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 Si Nakhon, December typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 2 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Si Nakhon

In Si Nakhon in December humidity is 55%. With an average temperature of 25°C (78°F), this humidity feels like a warm embrace, making it a great time for leisurely strolls and outdoor adventures, but travelers should stay hydrated to fully enjoy the experience.

December Average Humidity in Si Nakhon

This chart illustrates the average monthly humidity levels in Si Nakhon, 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 Si Nakhon is approximately 55%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Si Nakhon

In Si Nakhon 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 Si Nakhon.

Maximum UV Index Levels in Si Nakhon for December

The chart shows the monthly maximum UV Index (UVI) for Si Nakhon 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 Si Nakhon typically reaches 8, which falls under the very high exposure category.

Data source: Si Nakhon 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 Si Nakhon Compares to Other Months

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

This table compares monthly weather conditions in Si Nakhon, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (78°F)	26 mm (1.0 inches)	51%	very high
February Weather	27°C (81°F)	13 mm (0.5 inches)	48%	extreme
March Weather	31°C (88°F)	7 mm (0.3 inches)	45%	extreme
April Weather	32°C (90°F)	82 mm (3.2 inches)	49%	extreme
May Weather	32°C (89°F)	171 mm (6.7 inches)	71%	extreme
June Weather	30°C (87°F)	211 mm (8.3 inches)	84%	extreme
July Weather	30°C (86°F)	226 mm (8.9 inches)	84%	extreme
August Weather	29°C (85°F)	319 mm (12.6 inches)	87%	extreme
September Weather	29°C (85°F)	239 mm (9.4 inches)	84%	extreme
October Weather	29°C (84°F)	150 mm (5.9 inches)	71%	extreme
November Weather	28°C (83°F)	24 mm (0.9 inches)	62%	very high
December Weather	25°C (78°F)	14 mm (0.6 inches)	55%	very high