January weather forecast
Port Saint Lucie, FL

Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND
°Celsius°Fahrenheit
Share
Contents
A small wooden gazebo over a natural preserve in Port Saint Lucie, Florida
A small wooden gazebo over a natural preserve in Port Saint Lucie, Florida

Weather in January

January in Port Saint Lucie, Florida, serves as the doorway to the area's warm winter, presenting temperate days and cool nights. A rainfall occurrence of 0.55" (14mm) during this period indicates a relatively dry winter month, while wind speeds of 9.3mph (15km/h) introduce a soothing breeze to the city's weather dynamic. Compared to subsequent months, this period experiences shorter daylight hours. The month's climate sets the stage for inhabitants and visitors to enjoy a range of open-air activities such as beach walks and park visits. Transitioning into February, the weather factors exhibit a subtle rise, particularly in rainfall and temperature.

Temperature

Port Saint Lucie reaches its lowest average temperatures in January, measuring 71.2°F (21.8°C) at the peak and 59.5°F (15.3°C) at the lowest.

Humidity

The average relative humidity in January in Port Saint Lucie is 73%.

Rainfall

January is the month with the least rainfall in Port Saint Lucie. Rain falls for 8.2 days and accumulates 0.55" (14mm) of precipitation.

Ocean temperature

The months with the coldest seawater are January and February, with an average ocean temperature of 73.4°F (23°C).
Note: Every individual's cold threshold differs, but factors like today's sunshine, wind, and temperature can tip the scales for a delightful swim in 73.4°F (23°C) waters. For reference, Olympians swim in waters of 77°F (25°C) to 82.4°F (28°C).

Daylight

In January, the average length of the day is 10h and 39min.
On the first day of the month, sunrise is at 7:11 am and sunset at 5:38 pm. On the last day of January, sunrise is at 7:07 am and sunset at 6:01 pm EST.

Sunshine

The months with the least sunshine are January and December, with an average of 6.1h of sunshine.

UV index

January, February and December, with an average maximum UV index of 5, are months with the lowest UV index in Port Saint Lucie. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In January, a regular UV index of 5 translates into these guidelines:
Guard yourself - An obligation to protect skin and eyes from harm exists. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Caution! The Sun's UV rays become stronger due to reflections from water and sand.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Port Saint Lucie?

The coldest month in Port Saint Lucie is January, with an average high-temperature of 71.2°F (21.8°C) and an average low-temperature of 59.5°F (15.3°C).

What is the average January temperature in Port Saint Lucie?

January temperatures in Port Saint Lucie vary between a high-temperature of 71.2°F (21.8°C) and a low-temperature of 59.5°F (15.3°C).

What is the average humidity in January in Port Saint Lucie?

The average relative humidity in January in Port Saint Lucie, Florida, is 73%.

What is the driest month in Port Saint Lucie?

The month with the least rainfall in Port Saint Lucie is January, when the rain falls for 8.2 days and typically collects 0.55" (14mm) of precipitation.

How many days does it rain in January in Port Saint Lucie?

In January, the rain falls for 8.2 days. Throughout January, 0.55" (14mm) of precipitation is accumulated.

When is the ocean coldest in Port Saint Lucie?

January and February, with an average ocean temperature of 73.4°F (23°C), are months with the coldest seawater.

What is the water temperature in January in Port Saint Lucie?

In Port Saint Lucie, Florida, in January, the average water temperature is 73.4°F (23°C). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 73.4°F (23°C) water.

What is the average length of the day in January in Port Saint Lucie?

The average day length in January in Port Saint Lucie, Florida, is 10h and 39min.

When are sunrise and sunset in January in Port Saint Lucie?

On the first day of January in Port Saint Lucie, Florida, sunrise is at 7:11 am and sunset at 5:38 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:01 pm EST.

What is the month with the least sunshine in Port Saint Lucie?

The months with the least sunshine in Port Saint Lucie, Florida, are January and December, with an average of 6.1h of sunshine.

How many hours of sunshine does Port Saint Lucie have in January?

In January, the average sunshine duration in Port Saint Lucie is 6.1h.

What is the month with the lowest UV index in Port Saint Lucie?

January, February and December, with an average maximum UV index of 5, are months with the lowest UV index in Port Saint Lucie.

How high is the UV index in January in Port Saint Lucie?

In January, the average daily maximum UV index in Port Saint Lucie is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJanuaryFMAMJJASOND

Average temperature in January
Port Saint Lucie, FL

Average temperature in January - Port Saint Lucie, FL
  • Average high temperature in January: 71.2°F

The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (71.2°F).

  • Average low temperature in January: 59.5°F

The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (59.5°F).

Average pressure in January
Port Saint Lucie, FL

Average pressure in January - Port Saint Lucie, FL
  • Average pressure in January: 30.12"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).

Average wind speed in January
Port Saint Lucie, FL

Average wind speed in January - Port Saint Lucie, FL
  • Average wind speed in January: 9.3mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

Average humidity in January
Port Saint Lucie, FL

Average humidity in January - Port Saint Lucie, FL
  • Average humidity in January: 73%

The months with the highest relative humidity are June, July, August and September (78%).
The month with the lowest relative humidity is March (71%).

Average rainfall in January
Port Saint Lucie, FL

Average rainfall in January - Port Saint Lucie, FL
  • Average rainfall in January: 0.55"

The wettest month (with the highest rainfall) is August (2.99").
The driest month (with the least rainfall) is January (0.55").

Average rainfall days in January
Port Saint Lucie, FL

Average rainfall days in January - Port Saint Lucie, FL
  • Average rainfall days in January: 8.2 days

The month with the highest number of rainy days is August (23.5 days).
The month with the least rainy days is January (8.2 days).

Average sea temperature in January
Port Saint Lucie, FL

Average sea temperature in January - Port Saint Lucie, FL
  • Average sea temperature in January: 73.4°F

The best month for swimming (with the highest average sea temperature) is August (85.1°F).
The coldest month (with the lowest average sea temperature) is February (73.3°F).

Average daylight in January /
Average sunshine in January
Port Saint Lucie, FL

Average daylight in January / Average sunshine in January - Port Saint Lucie, FL
  • Average daylight in January: 10h and 4min

The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).

  • Average sunshine in January: 6h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 6min).

Average sunshine days in January
Port Saint Lucie, FL

Average sunshine days in January - Port Saint Lucie, FL
  • Average sunshine days in January: 18.7 days

The month with the most sunshine days is January (18.7 days).
The month with the least sunshine days is August (3.8 days).

Average UV index in January
Port Saint Lucie, FL

Average UV index in January - Port Saint Lucie, FL
  • Average UV index in January: 5

The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January, February and December (UV index 5).

Average cloud cover in January
Port Saint Lucie, FL

Average cloud cover in January - Port Saint Lucie, FL
  • Average cloud cover in January: 33

The months with the most cloud cover are November and December (Cloud cover 34).
The months with the least cloud cover are May, July and August (Cloud cover 27).

Average visibility in January
Port Saint Lucie, FL

Average visibility in January - Port Saint Lucie, FL
  • Average visibility in January: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Port Saint Lucie, Florida, USA

Weather forecast for today
Weather forecast for tomorrow
10 days weather forecast
Climate data
1January
2February
3March
4April
5May
6June
7July
8August
9September
10October
11November
12December

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location