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

81.3

°F

January 23, 04:50

Trend:

decreasing

Yesterday:

81.5°F

Tomorrow:

81.1°F

Sunrise:

06:40

Sunset:

18:23

Day Length:

11 h. 43 min.

San José in January

Minimum:

79.9°F

Average:

82.5°F

Maximum:

84.1°F

Sea water temperature in San José today

As of now, in San José, the water temperature is 81.3°F. It's safe to say that the water is comfortably warm for various water-related activities. Today's reading is 0.3°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 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 83.4°F on 2025, while the historical minimum was 76.1°F on 2019.

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 80.9°F, the minimum temperature may reach 80.8°F, and the maximum might stay at 81.1°F.

Daily water temperature in San José

Date Current Year

actual* / forecast**

last year 10 years average
Jan 9 82.3°F 82.6°F 82.2°F
Jan 10 82.0°F 82.2°F 82.0°F
Jan 11 81.8°F 82.1°F 81.9°F
Jan 12 81.7°F 82.6°F 82.0°F
Jan 13 81.6°F 82.7°F 82.0°F
Jan 14 81.3°F 82.5°F 81.8°F
Jan 15 81.5°F 83.1°F 81.9°F
Jan 16 81.1°F 82.5°F 81.6°F
Jan 17 81.0°F 82.7°F 81.5°F
Jan 18 81.3°F 82.3°F 81.3°F
Jan 19 81.3°F 83.2°F 81.4°F
Jan 20 81.2°F 82.9°F 81.1°F
Jan 21 81.3°F 83.3°F 81.1°F
Jan 22 81.5°F 83.1°F 81.2°F
Jan 23 81.3°F 83.4°F 81.0°F
Jan 24 81.1°F 82.6°F 80.7°F
Jan 25 80.9°F 82.8°F 80.6°F
Jan 26 80.9°F 83.0°F 80.5°F
Jan 27 80.9°F 82.8°F 80.6°F
Jan 28 80.8°F 82.6°F 80.5°F
Jan 29 81.0°F 82.3°F 80.7°F
Jan 30 80.8°F 82.5°F 80.5°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 2, 2023, reaching a 87.9°F. While the coldest temperature occurred on March 9, 2020, dipping to 74.0°F. The average readings by season are 81.1°F in Winter, 80.9°F in Spring, 84.2°F in Summer, and 83.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
San José 81.2°F 30mi
Veracruz 81.1°F 32mi
Panamá 81.7°F 42mi
San Francisco 81.7°F 42mi
Los Ángeles 81.2°F 54mi
Santo Domingo 81.4°F 59mi

* current water temperature in this city

** straight line distance from San José