Rio San Juan — Water Temperature, Sea Conditions & Trends
This page provides clear and up-to-date information about water temperature for Rio San Juan (Dominican Republic). 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 Rio San Juan help you plan your visit and choose the best time for swimming.
Current Water Temperature
Water temperature in Rio San Juan in the Caribbean Sea today is 82°F.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays.
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 Rio San Juan rose over the last 30 days but fell over the last week. Currently, the sea water temperature at this location matches the average for this day in previous years.
According to our forecast, Water temperature in Rio San Juan will be 81°F 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 |
|---|---|---|---|
| MAY 9 | 82°F | 81°F | |
| MAY 10 | 82°F | 81°F | |
| MAY 11 | 82°F | 81°F | |
| MAY 12 | 82°F | 81°F | |
| MAY 13 | 82°F | 81°F | |
| MAY 14 | 81°F | 81°F | |
| MAY 15 | 81°F | 80°F | |
| MAY 16 | 81°F | 81°F | |
| MAY 17 | 82°F | 81°F | 82°F |
| MAY 18 | 81°F | 81°F | |
| MAY 19 | 81°F | 81°F | |
| MAY 20 | 82°F | 81°F | |
| MAY 21 | 81°F | 81°F | |
| MAY 22 | 81°F | 81°F | |
| MAY 23 | 81°F | 81°F | |
| MAY 24 | 81°F | 81°F |
* 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
Rio San Juan, on the north coast of the Dominican Republic, enjoys warm Caribbean coastal waters that remain inviting throughout the year. Sea temperatures typically range from about 24°C in the coolest months of January and February to roughly 29°C during the warmest months of August and September. Spring and early summer usually see water temperatures around 25–27°C, while late summer and early autumn often push toward the upper end of that range. Because the town fronts both open ocean beaches and more sheltered bays, local temperature variations are modest but noticeable, with shallower coves warming slightly faster than deeper open-water areas.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 77°F | 80°F | 84°F |
| February | 75°F | 79°F | 82°F |
| March | 77°F | 79°F | 82°F |
| April | 77°F | 80°F | 82°F |
| May | 79°F | 81°F | 84°F |
| June | 79°F | 82°F | 86°F |
| July | 81°F | 83°F | 86°F |
| August | 81°F | 84°F | 86°F |
| September | 81°F | 85°F | 88°F |
| October | 82°F | 85°F | 88°F |
| November | 81°F | 84°F | 88°F |
| December | 79°F | 82°F | 84°F |
* Click on a month to view detailed water temperature data.
Rio San Juan: Weather Forecast
May 18
May 19
May 20
May 21
Location, Beaches & Local Information
Nearby Beaches & Facilities
El Ponton
Playita Grigri
La Islita
Playa De Los Muertos
Playa De Los Guardias
Playa Los Minos
Playa Del Rompe Olas
Playa Grande Golf & Ocean Club Beach
Playa De Los Enamorados
Swimming Conditions
Swimming around Rio San Juan is popular year-round, with comfortable conditions for casual bathing, snorkeling, and light water play for most of the year. Sheltered beaches and rocky coves provide calm spots for families and snorkelers to explore clear water and coastal rock formations, while some exposed beaches can develop stronger surf and currents, especially during seasonal weather changes. Water visibility is often good enough for snorkeling near reefs and outcrops, and the generally warm temperatures mean brief dips or longer swims are pleasant even outside the hottest months. Visitors should observe local warnings about currents and weather, and choose sheltered beaches if they prefer gentler swimming conditions.