January Weather in Sia, Vietnam

Last updated: August 28, 2025

In January, the average temperature in Sia, Vietnam is a pleasant 22°C (71°F), with minimums dipping to 14°C (57°F) and maximums reaching up to 29°C (85°F). Expect 181 mm (7.1 in) of precipitation spread over 18 days, contributing to an average humidity of 77%. Perfect for those who enjoy a tropical climate!

January Temperature in Sia

In January in Sia, the average temperature is 22°C (71°F). Maximums can reach 29°C (85°F), while minimums can be as low as 14°C (57°F). This pleasant climate makes Sia an ideal destination for travelers seeking mild weather and outdoor activities.

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

The chart illustrates January temperature patterns in Sia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sia, January typically has an average temperature of 22°C (71°F), with highs reaching up to 29°C (85°F) and lows dropping to around 14°C (57°F).

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

January Precipitation in Sia

In Sia in January, the precipitation amount is 181 mm (7.1 in) spread over 18 days.

January Precipitation Trends in Sia

The chart displays monthly precipitation patterns in Sia, 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 Sia, January typically receives around 181 mm (7.1 inches) of precipitation spread over approximately 18 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Sia

In Sia in January, humidity is 77%. With an average temperature of 22°C (71°F), this humidity feels like a warm, enveloping blanket that can make walking around feel a bit stifling, requiring frequent breaks in shaded areas and plenty of hydration.

January Average Humidity in Sia

This chart illustrates the average monthly humidity levels in Sia, 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 Sia is approximately 77%, 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 Sia

In Sia 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 Sia.

Maximum UV Index Levels in Sia for January

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

Data source: Sia 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 Sia Compares to Other Months

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

This table compares monthly weather conditions in Sia, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (71°F)	181 mm (7.1 inches)	77%	very high
February Weather	22°C (72°F)	96 mm (3.8 inches)	73%	extreme
March Weather	25°C (77°F)	81 mm (3.2 inches)	64%	extreme
April Weather	26°C (80°F)	132 mm (5.2 inches)	60%	extreme
May Weather	29°C (84°F)	175 mm (6.9 inches)	73%	extreme
June Weather	30°C (87°F)	146 mm (5.7 inches)	82%	extreme
July Weather	30°C (86°F)	220 mm (8.7 inches)	90%	extreme
August Weather	30°C (86°F)	189 mm (7.4 inches)	92%	extreme
September Weather	28°C (83°F)	274 mm (10.8 inches)	87%	extreme
October Weather	26°C (80°F)	585 mm (23.0 inches)	85%	extreme
November Weather	25°C (76°F)	605 mm (23.8 inches)	84%	very high
December Weather	22°C (72°F)	351 mm (13.8 inches)	83%	very high