Saint Augustine — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Saint Augustine (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 Saint Augustine help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Saint Augustine in the Atlantic Ocean today is 30°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 Saint Augustine 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 Saint Augustine will be 28.1°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 27 | 28.8°C | 26.3°C | |
| JUN 28 | 28.8°C | 26.8°C | |
| JUN 29 | 28.9°C | 26.3°C | |
| JUN 30 | 29.0°C | 28.0°C | |
| JUL 1 | 29.2°C | 27.3°C | |
| JUL 2 | 29.2°C | 27.0°C | |
| JUL 3 | 29.4°C | 27.3°C | |
| JUL 4 | 29.5°C | 27.0°C | |
| JUL 5 | 29.6°C | 27.0°C | 29.6°C |
| JUL 6 | 27.3°C | 29.4°C | |
| JUL 7 | 27.5°C | 29.2°C | |
| JUL 8 | 27.0°C | 28.9°C | |
| JUL 9 | 27.8°C | 28.7°C | |
| JUL 10 | 27.3°C | 28.5°C | |
| JUL 11 | 27.3°C | 28.3°C | |
| JUL 12 | 27.3°C | 28.1°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
Saint Augustine, on Florida’s northeast Atlantic coast, experiences a subtropical maritime climate that keeps coastal waters relatively mild year-round compared with northern locales. Typical sea surface temperatures near the city range from roughly 15–19 °C in winter (December–February), rise through spring to about 17–24 °C (March–May), reach their warmest in summer at approximately 25–29 °C (June–August), and cool again in autumn to around 20–26 °C (September–November). These figures can shift with weather patterns, cold snaps or warm spells, and the influence of the Gulf Stream, so short-term differences of a few degrees are not uncommon. Tidal cycles and local currents also affect nearshore measurements, with shallow spots warming faster than deeper channels.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 12°C | 15°C | 21°C |
| February | 12°C | 15°C | 20°C |
| March | 12°C | 17°C | 22°C |
| April | 15°C | 21°C | 24°C |
| May | 19°C | 24°C | 27°C |
| June | 23°C | 26°C | 29°C |
| July | 26°C | 28°C | 31°C |
| August | 26°C | 29°C | 30°C |
| September | 26°C | 28°C | 30°C |
| October | 21°C | 26°C | 29°C |
| November | 16°C | 22°C | 26°C |
| December | 13°C | 18°C | 22°C |
* Click on a month to view detailed water temperature data.
Saint Augustine: Weather Forecast
July 6
July 7
July 8
July 9
Location, Beaches & Local Information
Nearby Beaches & Facilities
Vilano 4x4
Vilano Beach
Anastasia State Park
Saint Augustine Beach
St. Johns County Ocean & Fishing Pier
Swimming Conditions
Swimming around Saint Augustine suits a range of preferences. During peak summer the water is comfortably warm for long swims, snorkeling and casual wading, and many beaches offer gentle surf that is family-friendly; lifeguard coverage is seasonal, and popular stretches such as those near Anastasia Island and St. Augustine Beach see the most recreational use. Cooler months still permit water activity for those prepared with wetsuits or who favor brisk swims, and shoulder seasons can be ideal for paddleboarding, kayaking and shoreline walks when crowds are smaller. Surfable breaks appear after onshore swells, attracting local surfers, while calmer bays and inlets provide sheltered spots for beginners. As with any coastal destination, checking current water conditions, rip current warnings and local advisories will help plan a safe and enjoyable beach holiday.