What is the current water temperature in San Juan?

Q: What is the current water temperature in San Juan?

As of now, in San Juan, the water temperature is 19.88°C. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool.

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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.

67.8

°F

March 14, 22:00

Trend:

decreasing

Yesterday:

67.9°F

Tomorrow:

67.2°F

Sunrise:

06:04

Sunset:

18:16

Day Length:

12 h. 12 min.

San Juan in March

Minimum:

59.8°F

Average:

65.1°F

Maximum:

67.6°F

Sea water temperature in San Juan today

As of now, in San Juan, the water temperature is 67.8°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. Today's reading is 1.1°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 fall 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 70.9°F on 2016, while the historical minimum was 63.0°F on 2022.

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 66.9°F, the minimum temperature may reach 66.6°F, and the maximum might stay at 67.2°F.

Daily water temperature in San Juan

Date	Current Year actual* / forecast**	last year	10 years average
Feb 28	67.0°F	69.6°F	67.5°F
Mar 1	66.9°F	67.2°F	67.4°F
Mar 2	64.8°F	67.1°F	67.0°F
Mar 3	64.8°F	68.0°F	66.9°F
Mar 4	63.3°F	68.2°F	66.5°F
Mar 5	64.9°F	66.8°F	66.2°F
Mar 6	66.2°F	65.8°F	66.3°F
Mar 7	64.9°F	67.6°F	66.2°F
Mar 8	65.3°F	65.8°F	66.5°F
Mar 9	68.6°F	67.4°F	66.9°F
Mar 10	67.2°F	64.9°F	66.5°F
Mar 11	67.1°F	66.4°F	66.9°F
Mar 12	68.5°F	65.2°F	66.8°F
Mar 13	67.9°F	66.5°F	66.8°F
Mar 14	67.8°F	65.2°F	66.7°F
Mar 15	67.2°F	63.6°F	66.1°F
Mar 16	67.0°F	65.1°F	65.9°F
Mar 17	66.8°F	66.3°F	65.7°F
Mar 18	66.6°F	65.1°F	65.5°F
Mar 19	66.9°F	67.7°F	65.8°F
Mar 20	67.0°F	68.3°F	65.9°F
Mar 21	66.8°F	32.0°F	65.7°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 an average year, San Juan offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in San Juan was recorded on February 10, 2023, reaching a 72.2°F. While the coldest temperature occurred on October 19, 2021, dipping to 53.4°F. The average readings by season are 65.5°F in Winter, 63.7°F in Spring, 59.5°F in Summer, and 59.0°F in Autumn.