January Weather in Portmore, Jamaica

Last updated: August 23, 2025

In Portmore, Jamaica, the average temperature in January is a pleasant 25°C (77°F). You can expect a minimum of 20°C (68°F) and a comfortable maximum of 30°C (86°F). With an average humidity of 76%, the climate can feel quite warm and inviting. However, be prepared for some rain, as the region typically receives about 25 mm (1.0 in) of precipitation over 5 days.

January Temperature in Portmore

In January in Portmore, the average temperature is 25°C (77°F). The maximum can reach 30°C (86°F), and the minimum can be as low as 20°C (68°F). This mild weather makes it an ideal time for outdoor activities and exploring the local attractions.

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

The chart illustrates January temperature patterns in Portmore, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portmore, January typically has an average temperature of 25°C (77°F), with highs reaching up to 30°C (86°F) and lows dropping to around 20°C (68°F).

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

January Precipitation in Portmore

In Portmore in January, the total precipitation amount is 25 mm (1.0 in) over a span of 5 days.

January Precipitation Trends in Portmore

The chart displays monthly precipitation patterns in Portmore, 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 Portmore, January typically receives around 25 mm (1.0 inches) of precipitation spread over approximately 5 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 Portmore

In Portmore in January, humidity is 76%. With an average temperature of 25°C (77°F), this humidity feels like a warm, heavy blanket wrapping around you, making traveling feel muggy and requiring frequent breaks to stay refreshed.

January Average Humidity in Portmore

This chart illustrates the average monthly humidity levels in Portmore, 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 Portmore is approximately 76%, 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 Portmore

In Portmore 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 Portmore.

Maximum UV Index Levels in Portmore for January

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

Data source: Portmore 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 Portmore Compares to Other Months

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

This table compares monthly weather conditions in Portmore, 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)	25 mm (1.0 inches)	76%	very high
February Weather	25°C (77°F)	24 mm (0.9 inches)	76%	extreme
March Weather	25°C (77°F)	37 mm (1.4 inches)	75%	extreme
April Weather	25°C (78°F)	71 mm (2.8 inches)	76%	extreme
May Weather	26°C (79°F)	112 mm (4.4 inches)	77%	extreme
June Weather	27°C (81°F)	49 mm (1.9 inches)	79%	extreme
July Weather	28°C (82°F)	37 mm (1.5 inches)	79%	extreme
August Weather	28°C (82°F)	90 mm (3.6 inches)	78%	extreme
September Weather	27°C (81°F)	122 mm (4.8 inches)	77%	extreme
October Weather	26°C (79°F)	185 mm (7.3 inches)	76%	extreme
November Weather	26°C (79°F)	110 mm (4.3 inches)	78%	very high
December Weather	25°C (78°F)	28 mm (1.1 inches)	77%	very high