Measurements:
°C
°F
Port St. Lucie
90°F
S 8 mph
Feels like: 96°F
Precip: 0%
World Resorts USA Port St. Lucie Weather

Port St. Lucie Sea Water Temperature

Current Sea Water Temperature:
+84.2°F
Maximum Sea Water Temperature in May: 87.0°F
Minimum Sea Water Temperature in May: 78.0°F
Average water temperature in May: 82.3°F

Sea Water Temperature for the Last 10 Days:

May 14 84.2°F May 09 82.0°F
May 13 84.2°F May 08 81.4°F
May 12 84.0°F May 07 82.0°F
May 11 83.6°F May 06 80.4°F
May 10 83.2°F May 05 80.6°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 15 days
December 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
April 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
Boston +62
Chicago +56
Hawaii +76
Honolulu +76
Houston +94
Las Vegas +88
Los Angeles +66
Maui +70
Miami +94
Miami Beach +90
New York +68
San Diego +66
San Francisco +62
Sarasota +94
Tampa +94
24 Hours Weather Forecast
Port St. Lucie
Local time: 13:08
14 may, thursday
1500 94°F
SW
12 mph
1800 88°F
SW
11 mph
2100 82°F
W
7 mph
15 may, friday
0000 80°F
W
6 mph
0300 78°F
N
2 mph
0600 78°F
SE
2 mph
0900 84°F
SW
5 mph
1200 88°F
W
11 mph