Measurements:
°C
°F
Port St. Lucie
80°F
W 8 mph
Feels like: 84°F
Precip: 100%
World Resorts USA Port St. Lucie Weather

Port St. Lucie Sea Water Temperature

Current Sea Water Temperature:
+79.6°F
Maximum Sea Water Temperature in March: 81.0°F
Minimum Sea Water Temperature in March: 70.6°F
Average water temperature in March: 76.8°F

Sea Water Temperature for the Last 10 Days:

March 13 79.6°F March 08 78.0°F
March 12 78.8°F March 07 76.2°F
March 11 78.2°F March 06 76.0°F
March 10 78.2°F March 05 76.4°F
March 09 77.8°F March 04 75.2°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:
December 14 days
March 14 days
February 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 72.6 °F
December 75.9 °F
February 76.8 °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 +44
Hawaii +76
Honolulu +76
Houston +78
Las Vegas +96
Los Angeles +100
Maui +70
Miami +80
Miami Beach +82
New York +42
San Diego +94
San Francisco +74
Sarasota +76
Tampa +82
Washington +60
24 Hours Weather Forecast
Port St. Lucie
Local time: 18:24
13 mar, friday
2100 76°F
SW
7 mph
14 mar, saturday
0000 74°F
SW
5 mph
0300 74°F
SW
5 mph
0600 72°F
W
5 mph
0900 74°F
W
5 mph
1200 78°F
W
6 mph
1500 80°F
W
8 mph
1800 78°F
W
11 mph