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Philippines > San Juan

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

83.2

°F

April 14, 13:25

Trend:

increasing

Yesterday:

83.2°F

Tomorrow:

83.4°F

Sunrise:

05:30

Sunset:

17:50

Day Length:

12 h. 20 min.

San Juan in April

Minimum:

81.4°F

Average:

82.5°F

Maximum:

83.4°F

Sea water temperature in San Juan today

As of now, in San Juan, the water temperature is 83.2°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 rise a bit.

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 83.8°F on 2025, while the historical minimum was 81.8°F on 2019.

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the histoorical minimum and others when it was close to the historical maximum. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 83.4°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 31 81.7°F 82.1°F 82.3°F
Apr 1 81.7°F 82.3°F 82.2°F
Apr 2 81.9°F 82.1°F 82.5°F
Apr 3 82.1°F 82.8°F 82.5°F
Apr 4 82.2°F 82.8°F 82.5°F
Apr 5 82.0°F 82.8°F 82.5°F
Apr 6 82.4°F 82.7°F 82.5°F
Apr 7 82.2°F 82.9°F 82.6°F
Apr 8 82.5°F 83.5°F 82.6°F
Apr 9 82.7°F 83.8°F 82.8°F
Apr 10 82.7°F 83.5°F 82.8°F
Apr 11 83.1°F 83.4°F 82.9°F
Apr 12 83.1°F 83.9°F 82.8°F
Apr 13 83.2°F 83.9°F 82.9°F
Apr 14 83.2°F 83.8°F 82.9°F
Apr 15 83.4°F 83.7°F 83.1°F
Apr 16 83.3°F 83.7°F 83.0°F
Apr 17 83.3°F 83.5°F 83.0°F
Apr 18 83.4°F 83.7°F 83.1°F
Apr 19 83.5°F 83.8°F 83.2°F
Apr 20 83.6°F 84.0°F 83.3°F
Apr 21 83.6°F 84.0°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

January

February

March

April

May

June

July

August

September

October

November

December

In San Juan, the water temperature is comfortable for swimming all year round.
The warmest water in San Juan was recorded on September 5, 2017, reaching a 86.7°F. While the coldest temperature occurred on February 16, 2019, dipping to 79.4°F. The average readings by season are 82.2°F in Winter, 83.1°F in Spring, 85.0°F in Summer, and 84.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
San Francisco 82.9°F 14mi
San Jose 83.2°F 27mi
San Francisco 83.0°F 38mi
San Jose 84.5°F 51mi
San Francisco 82.0°F 55mi

* current water temperature in this city

** straight line distance from San Juan