All data are in degrees Fahrenheit

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Water temperature in San Sebastian

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

82.7

°F

December 15, 07:42

Trend:

decreasing

Yesterday:

82.9°F

Tomorrow:

82.6°F

Sunrise:

06:01

Sunset:

17:20

Day Length:

11 h. 19 min.

San Sebastian in December

Minimum:

79.2°F

Average:

81.5°F

Maximum:

83.1°F

Sea water temperature in San Sebastian today

As of now, in San Sebastian, the water temperature is 82.7°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 0.6°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 stay about the same.

Recent sea temperature and forecast

Today's water temperature is considerably lower than the average registered over the last two weeks, indicating a slight cooling trend. It is also close to the historical minimum temperature for this date. The maximum temperature recorded for this date was 84.1°F on 2023, while the historical minimum was 82.7°F on 2021.

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 82.2°F, the minimum temperature may reach 81.9°F, and the maximum might stay at 82.6°F.

Daily water temperature in San Sebastian

Date Current Year

actual* / forecast**

last year 10 years average
Dec 1 83.8°F 83.2°F 83.7°F
Dec 2 84.5°F 83.0°F 83.6°F
Dec 3 85.2°F 83.0°F 83.7°F
Dec 4 84.9°F 82.9°F 83.5°F
Dec 5 84.6°F 83.2°F 83.4°F
Dec 6 84.3°F 83.7°F 83.3°F
Dec 7 84.0°F 83.6°F 83.4°F
Dec 8 83.7°F 83.5°F 83.5°F
Dec 9 83.4°F 83.3°F 83.4°F
Dec 10 82.9°F 83.0°F 83.2°F
Dec 11 82.8°F 83.0°F 83.3°F
Dec 12 82.9°F 83.6°F 83.4°F
Dec 13 82.9°F 83.5°F 83.4°F
Dec 14 82.9°F 84.1°F 83.5°F
Dec 15 82.7°F 83.7°F 83.3°F
Dec 16 82.6°F 83.8°F 83.2°F
Dec 17 82.5°F 83.7°F 83.1°F
Dec 18 82.3°F 83.4°F 82.9°F
Dec 19 82.3°F 83.4°F 82.9°F
Dec 20 82.0°F 83.3°F 82.7°F
Dec 21 82.1°F 83.1°F 82.7°F
Dec 22 81.9°F 82.8°F 82.5°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 Sebastian by month

In San Sebastian, the water temperature is comfortable for swimming all year round.
The warmest water in San Sebastian was recorded on June 15, 2024, reaching a 88.4°F. While the coldest temperature occurred on January 13, 2015, dipping to 79.0°F. The average readings by season are 81.8°F in Winter, 84.2°F in Spring, 86.0°F in Summer, and 84.9°F in Autumn.

Popular neighboring cities and resorts

City Water temperature* Distance**
San Jose 82.7°F 5mi
Santo Domingo 82.2°F 29mi
San Francisco 83.2°F 30mi
Santo Domingo 83.0°F 36mi
San Jose 81.3°F 37mi
Barcelona 82.3°F 37mi
Padang 83.0°F 37mi

* current water temperature in this city

** straight line distance from San Sebastian