January Weather in Si Thep, Thailand

Last updated: August 27, 2025

In January, the average temperature in Si Thep, Thailand is a pleasant 26°C (80°F). Expect temperatures to range from a cool 13°C (56°F) to a warm 36°C (98°F). With an average humidity of 50%, the climate feels comfortable. You might encounter some light rain, with an average precipitation of 7 mm (0.3 in) over the course of 1 day.

January Temperature in Si Thep

In January in Si Thep, the average temperature is 26°C (80°F). Maximum temperatures can reach 36°C (98°F), while minimums can drop as low as 13°C (56°F). Be sure to pack for both warm days and cool nights during your travels!

January Weather in Si Thep: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Si Thep, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Si Thep, January typically has an average temperature of 26°C (80°F), with highs reaching up to 36°C (98°F) and lows dropping to around 13°C (56°F).

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

January Precipitation in Si Thep

In Si Thep in January, the precipitation amount is 7 mm (0.3 in) over the course of 1 day.

January Precipitation Trends in Si Thep

The chart displays monthly precipitation patterns in Si Thep, 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 Si Thep, January typically receives around 7 mm (0.3 inches) of precipitation spread over approximately 1 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 Si Thep

In Si Thep in January, humidity is 50%. With an average temperature of 26°C (80°F), this humidity feels like a comfortable embrace, making it pleasant for traveling as long as you stay hydrated and enjoy the warm breezes.

January Average Humidity in Si Thep

This chart illustrates the average monthly humidity levels in Si Thep, 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 Si Thep is approximately 50%, 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 Si Thep

In Si Thep in January, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Si Thep.

Maximum UV Index Levels in Si Thep for January

The chart shows the monthly maximum UV Index (UVI) for Si Thep 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 Si Thep typically reaches 9, which falls under the very high exposure category.

Data source: Si Thep 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 Si Thep Compares to Other Months

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

This table compares monthly weather conditions in Si Thep, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (80°F)	7 mm (0.3 inches)	50%	very high
February Weather	27°C (82°F)	18 mm (0.7 inches)	47%	extreme
March Weather	30°C (86°F)	30 mm (1.2 inches)	41%	extreme
April Weather	30°C (87°F)	83 mm (3.3 inches)	51%	extreme
May Weather	30°C (86°F)	130 mm (5.1 inches)	76%	extreme
June Weather	30°C (86°F)	159 mm (6.3 inches)	83%	extreme
July Weather	29°C (84°F)	245 mm (9.6 inches)	80%	extreme
August Weather	28°C (83°F)	266 mm (10.5 inches)	85%	extreme
September Weather	28°C (83°F)	251 mm (9.9 inches)	88%	extreme
October Weather	28°C (83°F)	177 mm (7.0 inches)	79%	extreme
November Weather	27°C (82°F)	15 mm (0.6 inches)	68%	very high
December Weather	26°C (79°F)	7 mm (0.3 inches)	59%	very high