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

83.8

°F

November 27, 08:06

Trend:

stable

Yesterday:

83.9°F

Tomorrow:

83.9°F

Sunrise:

05:43

Sunset:

17:16

Day Length:

11 h. 33 min.

San Juan in December

Minimum:

79.2°F

Average:

81.9°F

Maximum:

84.1°F

Sea water temperature in San Juan today

As of now, in San Juan, the water temperature is 83.8°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 0.8°F lower 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

Today's water temperature slightly varies from the average of the past two weeks. 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 85.2°F on 2017, while the historical minimum was 82.9°F on 2018.

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 83.7°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
Nov 13 84.2°F 85.8°F 85.2°F
Nov 14 84.2°F 85.7°F 85.1°F
Nov 15 84.0°F 86.0°F 85.1°F
Nov 16 84.0°F 85.8°F 85.1°F
Nov 17 83.9°F 85.6°F 85.0°F
Nov 18 84.1°F 86.2°F 84.9°F
Nov 19 84.2°F 85.7°F 84.9°F
Nov 20 84.4°F 85.8°F 85.0°F
Nov 21 82.9°F 85.9°F 84.9°F
Nov 22 83.5°F 85.1°F 84.7°F
Nov 23 83.5°F 85.1°F 84.7°F
Nov 24 83.5°F 86.0°F 84.8°F
Nov 25 83.4°F 85.1°F 84.7°F
Nov 26 83.9°F 85.3°F 84.7°F
Nov 27 83.8°F 84.8°F 84.6°F
Nov 28 83.9°F 85.1°F 84.6°F
Nov 29 83.8°F 84.8°F 84.6°F
Nov 30 83.7°F 84.6°F 84.4°F
Dec 1 83.6°F 84.2°F 84.4°F
Dec 2 83.5°F 84.1°F 84.3°F
Dec 3 83.6°F 85.6°F 84.4°F
Dec 4 83.7°F 85.3°F 84.4°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 August 22, 2024, reaching a 88.9°F. While the coldest temperature occurred on January 13, 2015, dipping to 78.8°F. The average readings by season are 82.5°F in Winter, 84.1°F in Spring, 86.3°F in Summer, and 85.7°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Merida 83.9°F 6mi
Limon 83.5°F 20mi
San Francisco 84.5°F 27mi
Santiago 84.5°F 32mi
San Jose 84.3°F 34mi
Tacloban 83.9°F 36mi

* current water temperature in this city

** straight line distance from San Juan