January Weather in Rattanaburi, Thailand

Last updated: August 27, 2025

In Rattanaburi, Thailand, the average temperature in January is a pleasant 25°C (77°F). However, be prepared for fluctuations, as temperatures can dip to a cool 11°C (52°F) and soar to a sizzling 36°C (97°F). Rainfall is minimal, with an average precipitation of just 6 mm (0.2 in) occurring over 1 day. You'll also enjoy a comfortable average humidity of 56%.

January Temperature in Rattanaburi

In January in Rattanaburi, the average temperature is 25°C (77°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop to as low as 11°C (52°F). This range makes it an ideal time for travelers to enjoy both warm days and cooler evenings.

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

The chart illustrates January temperature patterns in Rattanaburi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rattanaburi, January typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (52°F).

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

January Precipitation in Rattanaburi

In Rattanaburi in January, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

January Precipitation Trends in Rattanaburi

The chart displays monthly precipitation patterns in Rattanaburi, 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 Rattanaburi, January typically receives around 6 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.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Rattanaburi

In Rattanaburi 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 Rattanaburi

This chart illustrates the average monthly humidity levels in Rattanaburi, 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 Rattanaburi 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 Rattanaburi

In Rattanaburi 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 Rattanaburi.

Maximum UV Index Levels in Rattanaburi for January

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

Data source: Rattanaburi 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 Rattanaburi Compares to Other Months

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

This table compares monthly weather conditions in Rattanaburi, 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)	6 mm (0.2 inches)	56%	very high
February Weather	26°C (78°F)	13 mm (0.5 inches)	50%	extreme
March Weather	29°C (84°F)	30 mm (1.2 inches)	41%	extreme
April Weather	29°C (85°F)	71 mm (2.8 inches)	44%	extreme
May Weather	29°C (85°F)	157 mm (6.2 inches)	71%	extreme
June Weather	29°C (85°F)	123 mm (4.8 inches)	83%	extreme
July Weather	29°C (84°F)	235 mm (9.3 inches)	87%	extreme
August Weather	28°C (83°F)	259 mm (10.2 inches)	90%	extreme
September Weather	28°C (83°F)	303 mm (11.9 inches)	89%	extreme
October Weather	27°C (81°F)	177 mm (7.0 inches)	83%	extreme
November Weather	26°C (79°F)	35 mm (1.4 inches)	74%	very high
December Weather	24°C (76°F)	11 mm (0.4 inches)	68%	very high