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 14.84°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

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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.

58.7

°F

November 7, 21:17

Trend:

increasing

Yesterday:

58.6°F

Tomorrow:

59.2°F

Sunrise:

05:22

Sunset:

18:07

Day Length:

12 h. 45 min.

San Juan in November

Minimum:

58.4°F

Average:

65.5°F

Maximum:

68.9°F

Sea water temperature in San Juan today

As of now, in San Juan, the water temperature is 58.7°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 0.5°F lower than the average recorded on this particular day in recent years. Since yesterday, there was a slight increase in temperature. This indicates a warming trend over the past day. 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 61.8°F on 2016, while the historical minimum was 55.6°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 minimum recorded over the past years. The forecast for the upcoming week suggests a gradual increase. The average temperature is expected to rise up to 59.5°F, with minimum temperature starting at 59.2°F, while the maximum might reach 59.9°F.

Daily water temperature in San Juan

Date	Current Year actual* / forecast**	last year	10 years average
Oct 24	58.8°F	57.5°F	58.5°F
Oct 25	59.1°F	58.6°F	58.4°F
Oct 26	59.4°F	57.9°F	58.2°F
Oct 27	58.6°F	58.7°F	58.0°F
Oct 28	57.1°F	57.0°F	58.2°F
Oct 29	57.0°F	57.6°F	58.1°F
Oct 30	58.4°F	58.3°F	58.6°F
Oct 31	58.0°F	58.9°F	58.4°F
Nov 1	57.3°F	58.7°F	58.6°F
Nov 2	58.8°F	58.8°F	58.8°F
Nov 3	59.1°F	58.6°F	59.1°F
Nov 4	58.9°F	58.0°F	59.1°F
Nov 5	58.4°F	59.2°F	59.2°F
Nov 6	58.6°F	59.3°F	59.5°F
Nov 7	58.7°F	57.2°F	59.3°F
Nov 8	59.2°F	58.4°F	59.7°F
Nov 9	59.2°F	58.5°F	59.7°F
Nov 10	59.2°F	58.4°F	59.7°F
Nov 11	59.6°F	58.8°F	60.1°F
Nov 12	59.6°F	58.8°F	60.1°F
Nov 13	59.9°F	59.1°F	60.4°F
Nov 14	59.8°F	59.0°F	60.3°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

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, 63.5°F in Spring, 59.5°F in Summer, and 58.9°F in Autumn.