Measurements:
°C
°F
Port St. Lucie
80°F
W 10 mph
Feels like: 84°F
Precip: 0%
World Resorts USA Port St. Lucie Weather

Port St. Lucie Sea Water Temperature

Current Sea Water Temperature:
+70.4°F
Maximum Sea Water Temperature in January: 80.4°F
Minimum Sea Water Temperature in January: 63.0°F
Average water temperature in January: 74.2°F

Sea Water Temperature for the Last 10 Days:

January 08 70.4°F January 03 72.0°F
January 07 69.6°F January 02 71.2°F
January 06 71.4°F January 01 71.2°F
January 05 72.4°F December 31 73.8°F
January 04 72.4°F December 30 73.6°F

When is the Warmest Sea for Port St. Lucie?

According to our data for the last three years for Port St. Lucie the highest average sea water temperature was in August, September and July.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Port St. Lucie was 89.4°F. The maximum and minimum values were 87.6°F and 91.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Port St. Lucie was 88.1°F. The maximum and minimum values were 86.8°F and 89.6°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Port St. Lucie was 85.8°F. The maximum and minimum values were 82.2°F and 89.8°F respectively.

Best Time to Visit Port St. Lucie
The most sunny months:
March 14 days
December 14 days
May 12 days
The most warm months:
July 91.7 °F
August 91.7 °F
September 89.5 °F
Warmest sea temperature:
August 88.7 °F
September 88.3 °F
July 87.6 °F
The most cold months:
January 72.3 °F
December 75.9 °F
February 77.1 °F
The most rainy months:
September 4 days
June 3 days
May 2 days
The most windy months:
November 11 mph
April 11 mph
March 11 mph

Port St. Lucie on the Weather Map

USA Resorts:
NAME
Chicago +54
Hawaii +78
Honolulu +78
Houston +78
Las Vegas +54
Los Angeles +58
Maui +72
Miami +86
Miami Beach +80
New York +52
San Diego +64
San Francisco +52
Sarasota +82
Tampa +88
Washington +60
24 Hours Weather Forecast
Port St. Lucie
Local time: 15:32
08 jan, thursday
1800 76°F
W
9 mph
2100 72°F
W
9 mph
09 jan, friday
0000 70°F
NW
9 mph
0300 70°F
NW
7 mph
0600 70°F
NW
9 mph
0900 76°F
NW
6 mph
1200 82°F
NW
13 mph
1500 82°F
W
13 mph