What is the current water temperature in San Juan?

As of now, in San Juan, the water temperature is 27.5°C. It's safe to say that the water is comfortably warm for various water-related activities.

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.

81.5

°F

January 26, 15:46

Trend:

decreasing

Yesterday:

82.0°F

Tomorrow:

81.3°F

Sunrise:

06:31

Sunset:

17:52

Day Length:

11 h. 21 min.

San Juan in February

Minimum:

81.2°F

Average:

82.9°F

Maximum:

84.1°F

Sea water temperature in San Juan today

As of now, in San Juan, the water temperature is 81.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.5°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 fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It also aligns closely with the historical average temperature for this date, indicating a typical climate pattern. The maximum temperature recorded for this date was 82.9°F on 2025, while the historical minimum was 80.4°F on 2016.

latest data

last year

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. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 81.1°F, the minimum temperature may reach 80.9°F, and the maximum might stay at 81.3°F.

Daily water temperature in San Juan

Date	Current Year actual* / forecast**	last year	10 years average
Jan 12	81.9°F	83.3°F	82.5°F
Jan 13	82.6°F	82.9°F	82.4°F
Jan 14	82.1°F	82.8°F	82.3°F
Jan 15	82.0°F	82.8°F	82.2°F
Jan 16	81.8°F	82.7°F	82.1°F
Jan 17	81.5°F	82.6°F	82.1°F
Jan 18	81.4°F	82.5°F	82.1°F
Jan 19	82.0°F	82.8°F	82.1°F
Jan 20	82.3°F	82.4°F	82.2°F
Jan 21	82.7°F	82.5°F	82.2°F
Jan 22	81.8°F	82.8°F	82.2°F
Jan 23	81.9°F	83.1°F	82.1°F
Jan 24	81.8°F	82.7°F	82.0°F
Jan 25	82.0°F	82.8°F	82.0°F
Jan 26	81.5°F	82.9°F	82.0°F
Jan 27	81.3°F	82.5°F	81.8°F
Jan 28	81.2°F	82.2°F	81.7°F
Jan 29	81.0°F	81.8°F	81.5°F
Jan 30	81.1°F	81.5°F	81.5°F
Jan 31	80.9°F	81.8°F	81.4°F
Feb 1	81.1°F	82.5°F	81.6°F
Feb 2	81.1°F	82.7°F	81.6°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 6, 2023, reaching a 88.8°F. While the coldest temperature occurred on February 8, 2016, dipping to 79.4°F. The average readings by season are 82.6°F in Winter, 84.6°F in Spring, 86.3°F in Summer, and 85.4°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Santa Maria	81.4°F	21mi
Zaragoza	81.2°F	33mi
Santiago	81.4°F	44mi

* current water temperature in this city

** straight line distance from San Juan