Naples — Water Temperature, Sea Conditions & Trends

Water Temperature: Daily Trends, Historical Records, and Forecast

✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health.

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 Naples has fallen over the last month but risen over the last 7 days. Currently, the sea water temperature at this location matches the average for this day in previous years.

According to our forecast, Water temperature in Naples will be 24.7°C in the next 7 days. See the table below for daily data for the upcoming week.

Table of Daily Sea Temperature Data

Annual Water Temperature Overview by Month

Monthly Water Temp Ranges

30°C

25°C

20°C

15°C

10°c

5°C

0°C

Annual Water Temperature Trend

Naples, on Florida’s Gulf Coast, enjoys a subtropical marine climate that keeps coastal water temperatures mild to warm for much of the year. Seasonal sea surface temperatures typically range from about 17–23 °C in the coolest months of late winter to early spring, rising through spring into the mid-20s °C. Summer brings the warmest conditions, with water commonly between 27–31 °C, and early autumn often maintains those higher temperatures before a gradual cooling. These ranges can vary slightly year to year with weather patterns and occasional cold fronts, but overall the Gulf off Naples is noticeably warmer than more northern Atlantic coasts for most of the year.