December Weather in Ko Yao, Thailand

Last updated: August 27, 2025

The average temperature in Ko Yao, Thailand during December is a warm 27°C (80°F). Expect a comfortable range, with minimums dipping to 24°C (75°F) and maximums reaching up to 30°C (87°F). Just a heads up, there’s an average precipitation of 124 mm (4.9 in) spread across about 13 days, and humidity hovers around a muggy 84%.

December Temperature in Ko Yao

In December in Ko Yao, the average temperature is 27°C (80°F). Maximums can reach 30°C (87°F) and minimums can be as low as 24°C (75°F). This mild climate makes Ko Yao an ideal destination for travelers seeking warm weather and pleasant outdoor activities.

December Weather in Ko Yao: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Ko Yao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ko Yao, December typically has an average temperature of 27°C (80°F), with highs reaching up to 30°C (87°F) and lows dropping to around 24°C (75°F).

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

December Precipitation in Ko Yao

In Ko Yao in December, the total precipitation amount is 124 mm (4.9 in) over a span of 13 days.

December Precipitation Trends in Ko Yao

The chart displays monthly precipitation patterns in Ko Yao, 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 Ko Yao, December typically receives around 124 mm (4.9 inches) of precipitation spread over approximately 13 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 Ko Yao

In Ko Yao in December, humidity is 84%. With an average temperature of 27°C (80°F), this humidity feels like a thick, warm blanket enveloping you, making travel feel sluggish and exhausting.

December Average Humidity in Ko Yao

This chart illustrates the average monthly humidity levels in Ko Yao, 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 Ko Yao is approximately 84%, 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 Ko Yao

In Ko Yao in December, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Ko Yao.

Maximum UV Index Levels in Ko Yao for December

The chart shows the monthly maximum UV Index (UVI) for Ko Yao 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 Ko Yao typically reaches 11, which falls under the extreme exposure category.

Data source: Ko Yao 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 Ko Yao Compares to Other Months

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

This table compares monthly weather conditions in Ko Yao, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	111 mm (4.4 inches)	76%	extreme
February Weather	27°C (82°F)	13 mm (0.5 inches)	73%	extreme
March Weather	28°C (83°F)	38 mm (1.5 inches)	74%	extreme
April Weather	28°C (83°F)	166 mm (6.6 inches)	71%	extreme
May Weather	28°C (83°F)	267 mm (10.5 inches)	72%	extreme
June Weather	28°C (83°F)	275 mm (10.8 inches)	79%	extreme
July Weather	28°C (83°F)	237 mm (9.3 inches)	79%	extreme
August Weather	28°C (82°F)	265 mm (10.4 inches)	82%	extreme
September Weather	27°C (81°F)	309 mm (12.2 inches)	84%	extreme
October Weather	27°C (81°F)	319 mm (12.6 inches)	83%	extreme
November Weather	27°C (81°F)	199 mm (7.8 inches)	84%	extreme
December Weather	27°C (80°F)	124 mm (4.9 inches)	84%	extreme