All data are in degrees Fahrenheit

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Water temperature in San Juan

Detailed information about the current water temperature in San Juan. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.
Sea temperature in San Juan now

84.7

°F

April 19, 10:46

Trend:

stable

Yesterday:

84.7°F

Tomorrow:

84.7°F

Sunrise:

05:40

Sunset:

18:15

Day Length:

12 h. 35 min.

San Juan in April

Minimum:

80.7°F

Average:

82.3°F

Maximum:

83.5°F

Sea water temperature in San Juan today

As of now, in San Juan, the water temperature is 84.7°F. Swimming in water of this temperature is considered highly warm and would be enjoyable for everyone. At this temperature, you can comfortably engage in water-based activities for extended periods without experiencing discomfort. Today's reading is 0.3°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to stay about the same.

Recent sea temperature and forecast

The water temperature today is above average for the last two weeks, showing a small increase in temperature. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 85.6°F on 2019, while the historical minimum was 82.1°F on 2015.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 85.0°F. Both minimum and maximum temperatures expected to be close to the average, offering a week of stable water conditions.

Daily water temperature in San Juan

Date Current Year

actual* / forecast**

last year 10 years average
Apr 5 83.8°F 84.5°F 83.3°F
Apr 6 83.8°F 85.2°F 83.4°F
Apr 7 83.4°F 85.2°F 83.5°F
Apr 8 84.1°F 85.2°F 83.5°F
Apr 9 84.3°F 84.7°F 83.6°F
Apr 10 84.5°F 83.8°F 83.5°F
Apr 11 84.5°F 84.1°F 83.8°F
Apr 12 84.1°F 84.2°F 83.9°F
Apr 13 84.4°F 84.7°F 84.0°F
Apr 14 84.1°F 85.6°F 84.1°F
Apr 15 84.0°F 85.4°F 84.2°F
Apr 16 84.2°F 85.0°F 84.2°F
Apr 17 84.3°F 84.6°F 84.2°F
Apr 18 84.7°F 85.0°F 84.3°F
Apr 19 84.7°F 84.7°F 84.4°F
Apr 20 84.7°F 84.6°F 84.4°F
Apr 21 84.9°F 85.2°F 84.6°F
Apr 22 85.0°F 85.6°F 84.7°F
Apr 23 85.0°F 84.9°F 84.7°F
Apr 24 85.0°F 85.6°F 84.7°F
Apr 25 85.2°F 86.0°F 84.9°F
Apr 26 85.2°F 86.3°F 84.9°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in San Juan by month

In San Juan, the water temperature is comfortable for swimming all year round.
The warmest water in San Juan was recorded on July 20, 2024, reaching a 89.4°F. While the coldest temperature occurred on February 27, 2023, dipping to 77.3°F. The average readings by season are 82.0°F in Winter, 84.3°F in Spring, 86.6°F in Summer, and 85.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Santo Domingo 84.9°F 8mi
San Sebastian 85.1°F 10mi
Santa Maria 84.9°F 26mi
Burgos 84.9°F 28mi
Santiago 84.8°F 31mi
Santa Maria 85.0°F 55mi
Burgos 84.3°F 55mi
Pamplona 81.6°F 77mi

* current water temperature in this city

** straight line distance from San Juan