Port Saint Lucie — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Port Saint Lucie (Florida, United States). It includes the current water temperature, daily data for the last month presented in a simple chart, and a 7-day forecast. The page also compares today’s value with typical averages for this period, shows usual monthly ranges during the year, and lists nearby beaches with short descriptions. Local weather for the next few days and general details about Port Saint Lucie help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Port Saint Lucie in the Atlantic Ocean today is 28°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Water temperature in Port Saint Lucie has risen over the last week and month. Currently, the sea water at this location is slightly warmer than average for this day in previous years.
According to our forecast, Water temperature in Port Saint Lucie will be 27.4°C in the next 7 days. See the table below for daily data for the upcoming week.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| JUN 6 | 27.9°C | 26.0°C | |
| JUN 7 | 27.6°C | 26.3°C | |
| JUN 8 | 27.5°C | 26.3°C | |
| JUN 9 | 27.3°C | 26.5°C | |
| JUN 10 | 27.4°C | 26.3°C | |
| JUN 11 | 27.8°C | 27.3°C | |
| JUN 12 | 27.8°C | 27.0°C | |
| JUN 13 | 28.1°C | 26.8°C | |
| JUN 14 | 28.4°C | 26.8°C | 28.4°C |
| JUN 15 | 27.0°C | 28.3°C | |
| JUN 16 | 26.8°C | 28.1°C | |
| JUN 17 | 26.8°C | 28.0°C | |
| JUN 18 | 27.0°C | 27.8°C | |
| JUN 19 | 26.3°C | 27.7°C | |
| JUN 20 | 26.8°C | 27.5°C | |
| JUN 21 | 26.8°C | 27.4°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Water temperature data for this location is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Annual Water Temperature Overview by Month
Monthly Water Temp Ranges
Annual Water Temperature Trend
Port Saint Lucie sits on Florida’s Treasure Coast and offers easy access to the warm Atlantic waters of the Indian River Lagoon and nearby ocean beaches. Seasonal water temperatures vary notably through the year: in winter (December–February) surface temperatures typically range from about 18 °C to 22 °C, with occasional colder spells dipping briefly lower. Spring (March–May) sees a steady warm-up to roughly 20 °C–26 °C as air temperatures rise. Summer months (June–August) are the warmest for swimming, with coastal waters commonly between 26 °C and 30 °C, while early autumn (September–November) usually holds water in the mid-20s, around 24 °C–29 °C, before cooling again. These averages reflect local tides and weather patterns, so short-term variations are normal.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 20°C | 22°C | 25°C |
| February | 20°C | 23°C | 25°C |
| March | 21°C | 23°C | 26°C |
| April | 22°C | 25°C | 27°C |
| May | 23°C | 26°C | 30°C |
| June | 24°C | 27°C | 29°C |
| July | 26°C | 28°C | 30°C |
| August | 26°C | 29°C | 31°C |
| September | 27°C | 29°C | 31°C |
| October | 25°C | 28°C | 30°C |
| November | 22°C | 26°C | 28°C |
| December | 21°C | 24°C | 27°C |
* Click on a month to view detailed water temperature data.
Port Saint Lucie: Weather Forecast
June 15
June 16
June 17
June 18
Location, Beaches & Local Information
Swimming Conditions
Swimming and beach holidays around Port Saint Lucie suit a range of preferences, from relaxed lagoon and inlet swims to more active ocean outings a short drive away. The warm summer and early autumn waters are often ideal for casual bathing, snorkeling, paddleboarding and family activities, while spring offers pleasant conditions for longer swims. In winter some visitors opt for wetsuits or limit sessions to sheltered areas, as cooler water can feel brisk for extended immersion. Beaches and public waterfronts vary in exposure to surf and currents; calmer estuary areas are better for children and novice swimmers, while open-ocean spots can present stronger currents and require attention to posted safety information and local lifeguard services. Overall, Port Saint Lucie provides comfortable swimming options for most of the year with seasonal differences in water temperature shaping the best times to visit.