January Weather in Siao, Thailand

Last updated: August 27, 2025

In January, the average temperature in Siao, Thailand hovers around 25°C (77°F). Expect a range from a cool 11°C (53°F) to a warm 35°C (96°F). During this time, you'll encounter an average precipitation of 3 mm (0.1 in) over just 1 day, while the air maintains an average humidity of 56%.

January Temperature in Siao

In January in Siao, the average temperature is 25°C (77°F). Maximums can reach 35°C (96°F), while minimums can be as low as 11°C (53°F). This range makes it an ideal time for travelers looking to enjoy moderate weather while exploring the area.

January Weather in Siao: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Siao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siao, January typically has an average temperature of 25°C (77°F), with highs reaching up to 35°C (96°F) and lows dropping to around 11°C (53°F).

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

January Precipitation in Siao

In Siao in January, the precipitation amount is 3 mm (0.1 in) over the course of 1 day.

January Precipitation Trends in Siao

The chart displays monthly precipitation patterns in Siao, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Siao, January typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 1 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Siao

In Siao in January humidity is 56%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace, making traveling somewhat sticky but still enjoyable, as long as you stay hydrated and take breaks in the shade.

January Average Humidity in Siao

This chart illustrates the average monthly humidity levels in Siao, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Siao is approximately 56%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Siao

In Siao in January, 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 Siao.

Maximum UV Index Levels in Siao for January

The chart shows the monthly maximum UV Index (UVI) for Siao in January, 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 January, the maximum UV index in Siao typically reaches 10, which falls under the very high exposure category.

Data source: Siao January 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 January Weather in Siao Compares to Other Months

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

This table compares monthly weather conditions in Siao, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	3 mm (0.1 inches)	56%	very high
February Weather	26°C (79°F)	5 mm (0.2 inches)	50%	extreme
March Weather	29°C (84°F)	36 mm (1.4 inches)	41%	extreme
April Weather	29°C (85°F)	64 mm (2.5 inches)	44%	extreme
May Weather	29°C (85°F)	148 mm (5.8 inches)	71%	extreme
June Weather	29°C (84°F)	155 mm (6.1 inches)	83%	extreme
July Weather	28°C (83°F)	204 mm (8.0 inches)	87%	extreme
August Weather	28°C (83°F)	202 mm (8.0 inches)	90%	extreme
September Weather	28°C (82°F)	265 mm (10.4 inches)	89%	extreme
October Weather	27°C (81°F)	169 mm (6.7 inches)	83%	extreme
November Weather	26°C (79°F)	55 mm (2.2 inches)	74%	extreme
December Weather	24°C (76°F)	13 mm (0.5 inches)	68%	very high