January Weather in Jamaica, United States

Last updated: June 24, 2025

In January, the average temperature in Jamaica, United States hovers around -5°C (23°F), with extreme variations where the minimum can plummet to -28°C (-19°F) and the maximum can reach up to 15°C (60°F). Additionally, residents can expect 81 mm (3.2 in) of precipitation spread over about 9 days, coupled with a high average humidity of 89%.

January Temperature in Jamaica

In January in Jamaica, the average temperature is -5°C (23°F), with maximums reaching 15°C (60°F) and minimums dropping as low as -28°C (-19°F). It's essential to pack warm clothing if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Jamaica, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jamaica, January typically has an average temperature of -5°C (23°F), with highs reaching up to 15°C (60°F) and lows dropping to around -28°C (-19°F).

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

January Precipitation in Jamaica

In Jamaica in January, the precipitation amount is 81 mm (3.2 in) spread over a duration of 9 days.

January Precipitation Trends in Jamaica

The chart displays monthly precipitation patterns in Jamaica, 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 Jamaica, January typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 9 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 Jamaica

In Jamaica in January, humidity is 89%. With an average temperature of -5°C (23°F), this humidity feels like a biting chill that seeps into your bones, making outdoor activities uncomfortable and prompting frequent breaks to warm up indoors.

January Average Humidity in Jamaica

This chart illustrates the average monthly humidity levels in Jamaica, 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 Jamaica is approximately 89%, 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 Jamaica

In Jamaica in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Jamaica, you can check the information here.

Maximum UV Index Levels in Jamaica for January

The chart shows the monthly maximum UV Index (UVI) for Jamaica 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 Jamaica typically reaches 3, which falls under the moderate exposure category.

Data source: Jamaica 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 Jamaica Compares to Other Months

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

This table compares monthly weather conditions in Jamaica, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	81 mm (3.2 inches)	89%	moderate
February Weather	-4°C (25°F)	97 mm (3.8 inches)	88%	moderate
March Weather	0°C (32°F)	80 mm (3.1 inches)	86%	high
April Weather	6°C (44°F)	142 mm (5.6 inches)	84%	very high
May Weather	13°C (56°F)	105 mm (4.1 inches)	76%	very high
June Weather	18°C (65°F)	109 mm (4.3 inches)	72%	very high
July Weather	21°C (70°F)	164 mm (6.5 inches)	66%	very high
August Weather	20°C (68°F)	127 mm (5.0 inches)	64%	very high
September Weather	16°C (61°F)	105 mm (4.1 inches)	72%	high
October Weather	10°C (50°F)	166 mm (6.5 inches)	81%	high
November Weather	2°C (36°F)	106 mm (4.2 inches)	87%	moderate
December Weather	-3°C (27°F)	116 mm (4.6 inches)	84%	low