January Weather in Tan Sum, Thailand

Last updated: August 27, 2025

In January, the average temperature in Tan Sum, Thailand is a comfortable 25°C (78°F). Temperatures can vary, with a minimum of 12°C (54°F) and a maximum soaring to 35°C (96°F). Visitors can expect 5 mm (0.2 in) of precipitation over 1 day, accompanied by an average humidity level of 74%, creating a pleasantly warm atmosphere.

January Temperature in Tan Sum

In January in Tan Sum, the average temperature is 25°C (78°F), with maximums reaching 35°C (96°F) and minimums dipping as low as 12°C (54°F). This climate makes it an ideal destination for travelers seeking pleasant weather and a range of outdoor activities.

January Weather in Tan Sum: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Tan Sum, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tan Sum, January typically has an average temperature of 25°C (78°F), with highs reaching up to 35°C (96°F) and lows dropping to around 12°C (54°F).

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

January Precipitation in Tan Sum

In Tan Sum in January, the precipitation amount is 5 mm (0.2 in) over a duration of 1 day.

January Precipitation Trends in Tan Sum

The chart displays monthly precipitation patterns in Tan Sum, 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 Tan Sum, January typically receives around 5 mm (0.2 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 Tan Sum

In Tan Sum in January humidity is 74%. With an average temperature of 25°C (78°F), this humidity feels like you're enveloped in a warm, thick blanket, making outdoor activities feel more strenuous and necessitating frequent breaks and hydration for comfortable travel.

January Average Humidity in Tan Sum

This chart illustrates the average monthly humidity levels in Tan Sum, 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 Tan Sum is approximately 74%, 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 Tan Sum

In Tan Sum 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 Tan Sum.

Maximum UV Index Levels in Tan Sum for January

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

Data source: Tan Sum 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 Tan Sum Compares to Other Months

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

This table compares monthly weather conditions in Tan Sum, 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 (78°F)	5 mm (0.2 inches)	74%	very high
February Weather	26°C (79°F)	5 mm (0.2 inches)	65%	extreme
March Weather	29°C (85°F)	28 mm (1.1 inches)	53%	extreme
April Weather	29°C (85°F)	77 mm (3.0 inches)	49%	extreme
May Weather	29°C (85°F)	168 mm (6.6 inches)	72%	extreme
June Weather	29°C (84°F)	201 mm (7.9 inches)	86%	extreme
July Weather	28°C (83°F)	311 mm (12.2 inches)	91%	extreme
August Weather	28°C (82°F)	319 mm (12.5 inches)	93%	extreme
September Weather	28°C (82°F)	322 mm (12.7 inches)	91%	extreme
October Weather	27°C (81°F)	194 mm (7.6 inches)	88%	extreme
November Weather	26°C (80°F)	46 mm (1.8 inches)	85%	very high
December Weather	25°C (77°F)	7 mm (0.3 inches)	82%	very high