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

82.9

°F

March 28, 17:20

Trend:

increasing

Yesterday:

82.4°F

Tomorrow:

83.1°F

Sunrise:

05:57

Sunset:

18:11

Day Length:

12 h. 14 min.

San Juan in April

Minimum:

81.3°F

Average:

82.4°F

Maximum:

83.5°F

Sea water temperature in San Juan today

As of now, in San Juan, the water temperature is 82.9°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 about the same as the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. According to the forecast, we expect the temperature to rise a bit.

Recent sea temperature and forecast

Today's water temperature is notably higher than the average recorded over the past two weeks, indicating a significant warming trend. 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 84.5°F on 2022, while the historical minimum was 80.8°F on 2016.

Observations from the last two weeks indicate that the water temperature was in proximity to the lowest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 83.2°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
Mar 14 80.9°F 83.9°F 82.1°F
Mar 15 80.2°F 83.7°F 82.0°F
Mar 16 79.8°F 83.5°F 82.1°F
Mar 17 80.0°F 83.1°F 82.1°F
Mar 18 80.1°F 82.8°F 82.1°F
Mar 19 80.7°F 82.2°F 82.3°F
Mar 20 81.6°F 81.7°F 82.3°F
Mar 21 81.4°F 81.7°F 82.3°F
Mar 22 81.1°F 81.5°F 82.2°F
Mar 23 81.7°F 81.5°F 82.3°F
Mar 24 82.0°F 81.8°F 82.5°F
Mar 25 81.8°F 82.1°F 82.6°F
Mar 26 81.9°F 82.0°F 82.6°F
Mar 27 82.4°F 82.7°F 82.8°F
Mar 28 82.9°F 83.3°F 82.9°F
Mar 29 83.1°F 83.7°F 83.1°F
Mar 30 83.1°F 83.6°F 83.1°F
Mar 31 83.1°F 84.0°F 83.1°F
Apr 1 83.3°F 83.3°F 83.3°F
Apr 2 83.3°F 83.1°F 83.4°F
Apr 3 83.2°F 83.1°F 83.2°F
Apr 4 83.3°F 83.5°F 83.3°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 82.1°F in Winter, 84.4°F in Spring, 86.5°F in Summer, and 85.3°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Santo Domingo 82.8°F 8mi
San Sebastian 82.7°F 10mi
Santa Maria 82.7°F 26mi
Burgos 82.9°F 28mi
Santiago 83.0°F 31mi
Santa Maria 82.9°F 55mi
Burgos 81.7°F 55mi
Pamplona 79.9°F 77mi

* current water temperature in this city

** straight line distance from San Juan