Spain > Donostia / San Sebastián

Water temperature in Donostia / San Sebastián

Detailed information about the current water temperature in Donostia / San Sebastián. 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.

71.3

°F

September 25, 09:49

Trend:

stable

Yesterday:

71.3°F

Tomorrow:

71.1°F

Sunrise:

07:58

Sunset:

20:01

Day Length:

12 h. 3 min.

Donostia / San Sebastián in October

Minimum:

53.7°F

Average:

56.0°F

Maximum:

57.9°F

Sea water temperature in Donostia / San Sebastián today

As of now, in Donostia / San Sebastián, the water temperature is 71.3°F. Swimming in water of this temperature is seen as relatively warm and enjoyable for some individuals, although many might find it slightly too cool. 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 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 is also close to the historical maximum temperature for this date. The maximum temperature recorded for this date was 70.7°F on 2023, while the historical minimum was 67.9°F on 2017.

latest data

last year

Over the last two weeks, the water temperature has stayed slightly above than historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 70.6°F, the minimum temperature may reach 70.1°F, and the maximum might stay at 71.1°F.

Daily water temperature in Donostia / San Sebastián

Date	Current Year actual* / forecast**	last year	10 years average
Sep 11	73.3°F	70.6°F	71.4°F
Sep 12	72.5°F	70.4°F	71.4°F
Sep 13	72.8°F	70.3°F	71.4°F
Sep 14	73.0°F	69.5°F	71.3°F
Sep 15	72.6°F	69.4°F	71.1°F
Sep 16	72.2°F	69.4°F	70.9°F
Sep 17	72.0°F	69.5°F	70.7°F
Sep 18	71.5°F	69.1°F	70.5°F
Sep 19	71.6°F	71.0°F	70.3°F
Sep 20	71.5°F	70.8°F	70.2°F
Sep 21	71.1°F	70.5°F	70.1°F
Sep 22	71.3°F	69.9°F	69.9°F
Sep 23	71.2°F	69.6°F	69.6°F
Sep 24	71.3°F	69.4°F	69.5°F
Sep 25	71.3°F	69.2°F	69.2°F
Sep 26	71.1°F	69.5°F	69.0°F
Sep 27	71.0°F	69.0°F	68.9°F
Sep 28	70.7°F	68.8°F	68.6°F
Sep 29	70.6°F	68.6°F	68.6°F
Sep 30	70.3°F	68.2°F	68.2°F
Oct 1	70.3°F	68.2°F	68.2°F
Oct 2	70.1°F	68.8°F	68.1°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 Donostia / San Sebastián by month

In Donostia / San Sebastián, there are only 6 days through the year when the water is warm enough to be comfortable for swimming.

The warmest water in Donostia / San Sebastián was recorded on July 18, 2022, reaching a 77.3°F. While the coldest temperature occurred on February 26, 2018, dipping to 51.4°F. The average readings by season are 55.8°F in Winter, 57.5°F in Spring, 70.8°F in Summer, and 65.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Saint-Jean-de-Luz	72.5°F	17mi
Biarritz	72.1°F	24mi
Léon	70.5°F	52mi

* current water temperature in this city

** straight line distance from Donostia / San Sebastián