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

86.1

°F

August 23, 17:14

Trend:

stable

Yesterday:

86.3°F

Tomorrow:

86.2°F

Sunrise:

06:12

Sunset:

18:33

Day Length:

12 h. 21 min.

San José in August

Minimum:

79.4°F

Average:

82.3°F

Maximum:

84.0°F

Sea water temperature in San José today

As of now, in San José, the water temperature is 86.1°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 2.1°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 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 85.2°F on 2024, while the historical minimum was 83.2°F on 2021.

Observations from the last two weeks indicate that the water temperature was in proximity to the highest values recorded on those days in the past. Over the next week, the forecast shows a steady trend, with temperatures staying close to the average of 86.3°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
Aug 9 85.2°F 84.0°F 84.4°F
Aug 10 85.4°F 83.9°F 84.3°F
Aug 11 85.2°F 83.7°F 84.1°F
Aug 12 84.7°F 84.3°F 84.1°F
Aug 13 84.7°F 84.9°F 84.1°F
Aug 14 84.7°F 85.5°F 84.1°F
Aug 15 85.8°F 85.3°F 84.2°F
Aug 16 85.2°F 85.1°F 84.3°F
Aug 17 85.7°F 84.8°F 84.3°F
Aug 18 84.5°F 84.6°F 84.1°F
Aug 19 85.7°F 83.8°F 84.3°F
Aug 20 85.6°F 83.5°F 84.2°F
Aug 21 85.5°F 84.0°F 84.1°F
Aug 22 86.3°F 83.8°F 84.2°F
Aug 23 86.1°F 83.8°F 84.0°F
Aug 24 86.2°F 83.8°F 84.1°F
Aug 25 86.3°F 85.2°F 84.2°F
Aug 26 86.2°F 85.0°F 84.2°F
Aug 27 86.2°F 84.4°F 84.1°F
Aug 28 86.2°F 84.9°F 84.1°F
Aug 29 86.4°F 84.6°F 84.3°F
Aug 30 86.5°F 84.5°F 84.4°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 2, 2023, reaching a 87.9°F. While the coldest temperature occurred on February 13, 2026, dipping to 72.6°F. The average readings by season are 81.0°F in Winter, 81.0°F in Spring, 84.3°F in Summer, and 83.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
San José 85.1°F 30mi
Veracruz 85.2°F 32mi
Panamá 85.4°F 42mi
San Francisco 85.4°F 42mi
Los Ángeles 85.6°F 54mi
Santo Domingo 85.7°F 59mi

* current water temperature in this city

** straight line distance from San José