All data are in degrees Fahrenheit

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Water temperature in San José

Detailed information about the current water temperature in San José. 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 José now

80.5

°F

March 30, 02:21

Trend:

increasing

Yesterday:

80.4°F

Tomorrow:

80.7°F

Sunrise:

06:20

Sunset:

18:31

Day Length:

12 h. 11 min.

San José in April

Minimum:

80.9°F

Average:

82.6°F

Maximum:

84.0°F

Sea water temperature in San José today

As of now, in San José, the water temperature is 80.5°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.2°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 rise a bit.

Recent sea temperature and forecast

Today's water temperature slightly varies from the average of the past two weeks. 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 83.8°F on 2025, while the historical minimum was 78.5°F on 2019.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 80.8°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 José

Date Current Year

actual* / forecast**

last year 10 years average
Mar 16 81.3°F 82.4°F 80.4°F
Mar 17 81.1°F 82.1°F 80.5°F
Mar 18 80.6°F 82.7°F 80.6°F
Mar 19 80.2°F 83.6°F 80.6°F
Mar 20 79.7°F 83.0°F 80.3°F
Mar 21 79.5°F 83.0°F 80.3°F
Mar 22 79.3°F 82.5°F 80.5°F
Mar 23 81.0°F 82.3°F 80.6°F
Mar 24 80.4°F 81.6°F 80.5°F
Mar 25 80.7°F 81.3°F 80.5°F
Mar 26 79.8°F 82.8°F 80.4°F
Mar 27 81.1°F 81.6°F 80.3°F
Mar 28 80.9°F 81.9°F 80.7°F
Mar 29 80.4°F 82.5°F 80.5°F
Mar 30 80.5°F 83.8°F 80.7°F
Mar 31 80.7°F 82.5°F 80.9°F
Apr 1 80.7°F 82.3°F 80.8°F
Apr 2 80.7°F 83.8°F 80.9°F
Apr 3 80.5°F 83.2°F 80.7°F
Apr 4 80.9°F 82.8°F 81.1°F
Apr 5 81.0°F 82.5°F 81.2°F
Apr 6 81.2°F 83.0°F 81.4°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 José by month

In San José, the water temperature is comfortable for swimming all year round.
The warmest water in San José was recorded on September 9, 2023, reaching a 86.7°F. While the coldest temperature occurred on February 18, 2017, dipping to 76.3°F. The average readings by season are 81.6°F in Winter, 82.0°F in Spring, 83.9°F in Summer, and 83.6°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
La Palma 80.1°F 4mi
Santo Domingo 80.4°F 5mi
Los Ángeles 80.3°F 16mi
San José 77.4°F 63mi

* current water temperature in this city

** straight line distance from San José