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

87.7

°F

May 19, 15:07

Trend:

stable

Yesterday:

87.7°F

Tomorrow:

87.7°F

Sunrise:

05:27

Sunset:

18:18

Day Length:

12 h. 51 min.

San Juan in May

Minimum:

78.7°F

Average:

80.9°F

Maximum:

82.0°F

Sea water temperature in San Juan today

As of now, in San Juan, the water temperature is 87.7°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 0.6°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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 88.0°F on 2014, while the historical minimum was 86.1°F on 2022.

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 87.7°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
May 5 87.0°F 85.3°F 86.1°F
May 6 87.3°F 85.6°F 86.2°F
May 7 86.8°F 85.9°F 86.4°F
May 8 86.7°F 86.1°F 86.3°F
May 9 86.8°F 86.0°F 86.3°F
May 10 87.2°F 85.7°F 86.3°F
May 11 87.1°F 86.1°F 86.3°F
May 12 87.3°F 86.1°F 86.5°F
May 13 87.6°F 86.3°F 86.7°F
May 14 87.6°F 86.2°F 86.8°F
May 15 86.7°F 86.3°F 86.8°F
May 16 87.2°F 86.2°F 86.8°F
May 17 88.0°F 86.2°F 87.0°F
May 18 87.7°F 86.2°F 87.0°F
May 19 87.7°F 86.1°F 87.0°F
May 20 87.7°F 86.1°F 87.0°F
May 21 87.7°F 86.3°F 87.1°F
May 22 87.6°F 86.4°F 87.0°F
May 23 87.5°F 86.5°F 86.9°F
May 24 87.7°F 86.5°F 87.0°F
May 25 87.9°F 86.4°F 87.2°F
May 26 87.8°F 86.3°F 87.2°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 May 14, 2020, reaching a 89.0°F. While the coldest temperature occurred on February 2, 2014, dipping to 77.6°F. The average readings by season are 80.7°F in Winter, 84.3°F in Spring, 86.0°F in Summer, and 84.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
Mandaluyong City 87.8°F 1mi
Pasig City 88.1°F 2mi
Manila 87.9°F 3mi
Makati City 87.8°F 3mi
Quezon City 87.9°F 4mi
Pasay 87.8°F 5mi
Caloocan City 87.9°F 6mi
Taguig 88.0°F 6mi
Antipolo 88.1°F 6mi
Paranaque City 87.9°F 8mi

* current water temperature in this city

** straight line distance from San Juan