January Weather in Port Saint Lucie, United States

Last updated: June 24, 2025

In Port Saint Lucie, United States, the average temperature in January hovers around 20°C (68°F), making it a pleasant time to visit. Expect minimum lows of 5°C (41°F) and maximum highs of 29°C (84°F). Be prepared for some rain, as 38 mm (1.5 in) may fall over approximately 6 days during the month. With an average humidity of 83%, it’s advisable to stay hydrated and enjoy the lush surroundings!

January Temperature in Port Saint Lucie

In January in Port Saint Lucie, the average temperature is 20°C (68°F). Maximums can reach 29°C (84°F), while minimums can drop as low as 5°C (41°F). This pleasant climate makes Port Saint Lucie an ideal destination for travelers looking to enjoy mild weather and outdoor activities.

January Weather in Port Saint Lucie: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Port Saint Lucie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Saint Lucie, January typically has an average temperature of 20°C (68°F), with highs reaching up to 29°C (84°F) and lows dropping to around 5°C (41°F).

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

January Precipitation in Port Saint Lucie

In Port Saint Lucie in January, the total precipitation amount is 38 mm (1.5 in) spread over 6 days.

January Precipitation Trends in Port Saint Lucie

The chart displays monthly precipitation patterns in Port Saint Lucie, 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 Port Saint Lucie, January typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 6 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 Port Saint Lucie

In Port Saint Lucie in January humidity is 83%. With an average temperature of 20°C (68°F), this humidity feels like a warm, heavy blanket enveloping you, making it feel much warmer than it is. Traveling in such conditions can be quite taxing, as the air feels thick, often leading to a sense of exhaustion and requiring frequent breaks to seek shade or hydration.

January Average Humidity in Port Saint Lucie

This chart illustrates the average monthly humidity levels in Port Saint Lucie, 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 Port Saint Lucie is approximately 83%, 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 Port Saint Lucie

In Port Saint Lucie in January, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Port Saint Lucie, you can refer to this Hourly UV Index in Port Saint Lucie.

Maximum UV Index Levels in Port Saint Lucie for January

The chart shows the monthly maximum UV Index (UVI) for Port Saint Lucie 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 Port Saint Lucie typically reaches 6, which falls under the high exposure category.

Data source: Port Saint Lucie 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 Port Saint Lucie Compares to Other Months

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

This table compares monthly weather conditions in Port Saint Lucie, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	38 mm (1.5 inches)	83%	high
February Weather	22°C (72°F)	43 mm (1.7 inches)	80%	very high
March Weather	22°C (72°F)	31 mm (1.2 inches)	75%	very high
April Weather	24°C (76°F)	65 mm (2.6 inches)	68%	extreme
May Weather	26°C (79°F)	122 mm (4.8 inches)	65%	extreme
June Weather	27°C (81°F)	159 mm (6.3 inches)	73%	extreme
July Weather	28°C (83°F)	140 mm (5.5 inches)	77%	extreme
August Weather	28°C (83°F)	175 mm (6.9 inches)	80%	extreme
September Weather	28°C (82°F)	148 mm (5.8 inches)	83%	extreme
October Weather	27°C (80°F)	126 mm (5.0 inches)	83%	very high
November Weather	23°C (75°F)	81 mm (3.2 inches)	83%	high
December Weather	21°C (71°F)	49 mm (1.9 inches)	84%	moderate