The most detailed information about the water temperature in San Sebastian in Bay of Biscay (Basque Country, Spain). Forecast of changes in water temperature for the next 10 days. Statistics by months for recent years. Information about the neighboring resorts. Weather forecast in San Sebastian for a week.
Water temperature in San Sebastian right now
data updated 15 minutes ago58°F
yesterday: 58°F
a week ago: 56°F
Trend: slow rise
Today water temperature in San Sebastian is 57.9°F. Water of this temperature is considered cold enough. Dipping or immersion in such water is possible only for a short time. Staying in such water for more than two hours can lead to loss of consciousness. In any case, the general weather is also important. So, the air temperature at the same time will reach 47°F.
Analysis and forecast
The water temperature today roughly corresponds to the average value on this day in recent years. Its value has rise both over the past 20 days and over the past week. Exactly a year ago, on this day, the water temperature in this location was 57°F. Water temperature range in San Sebastian in April is from 51 to 60 degrees.
According to our forecast, the water temperature in San Sebastian will slowly rise for at least the next 10 days and reach a value of 59°F.
Table of water temperature values in San Sebastian
| Day | Fact* | Average** | Forecast*** |
| Apr 16 | 14.2°C | 14.5°C | |
| Apr 17 | 14.5°C | 14.8°C | |
| Apr 18 | 14.4°C | 14.5°C | |
| Apr 19 | 14.2°C | 14.3°C | |
| Apr 20 | 14.3°C | 14.5°C | |
| Apr 21 | 14.2°C | 14.5°C | |
| Apr 22 | 14.6°C | 14.5°C | |
| Apr 23 | 14.4°C | 14.5°C | |
| Apr 24 | 14.5°C | 14.4°C | |
| Apr 25 | 14.8°C | 14.7°C | |
| Apr 26 | 15.0°C | 14.9°C | |
| Apr 27 | 14.5°C | 14.4°C | |
| Apr 28 | 14.8°C | 14.7°C | |
| Apr 29 | 15.0°C | 14.9°C | |
| Apr 30 | 15.0°C | 14.9°C |
** Average - Average water temperature on this day in past years
*** Forecast - Our forecast for the water temperature
Actual nearshore temperatures may vary by several degrees from the indicated values. This is noticeable after heavy rain or after prolonged periods of strong winds. Some downstream winds cause cold, deep waters to replace surface waters that have been warmed by the sun.
To develop a forecast, we use our own mathematical model, which takes into account the current change in water temperature, historical data and the main weather trends, wind strength and direction, air temperature in each specific region. We also take into account data for other resorts in Spain.
Annual graph of average water temperature change in San Sebastian
Water temperature in San Sebastian by month
San Sebastian located in the northern hemisphere, at latitude 43 degrees. The comfortable water temperature for swimming is set here in July, usually at the beginning of the month. During a year in San Sebastian there are 93 days of swimming. In general, the swimming season ends in October. Average annual water temperature on the coast in San Sebastian is 62°F, by the seasons: in winter 55°F, in spring 57°F, in summer 70°F, in autumn 65°F. Minimum water temperature (53°F) in San Sebastian it happens in February, maximum (74°F) in August.
You can find out detailed data on how the water temperature in San Sebastian changes in each specific month:
San Sebastian: general information and map
Neighboring cities and resorts
| City | Water* | Distance** |
| La Concha Beach | 57°C  | 0km |
| Zurriola Beach | 58°C | 1km |
| Pasaia | 57°C | 4km |
| Orio | 58°C | 13km |
| Irun | 57°C | 16km |
| Zarautz | 58°C | 16km |
| Hondarribia | 58°C | 16km |
| Hendaye | 58°C | 18km |
| Getaria | 57°C | 18km |
| Zumaia | 57°C | 22km |
| Urrugne | 57°C | 22km |
| Ciboure | 58°C | 26km |
** Straight line distance in kilometers
The warmest water today in Spain recorded in La Palma, its value is 71°F. Lowest - in San Juan de la Arena, there water temperature now 56°F. Average water temperature in the country today - 61°F.
Water temperature data in San Sebastian and neighboring towns and resorts collected from various sources, using buoys, using satellite maps of sea, river and lake surfaces of the NOAA agency.
We use data from various local authorities in each specific location of the world to more accurately reflect temperature values.
The nearest airport is located in a 15 kilometers. This is San Sebastian (EAS) airport. We have no information as to whether it is valid and what flights it receives or sends.
San Sebastian: weather forecast
The weather forecast is shown in local time in San Sebastian
19km/hhumidity: 90%, clouds: 100%
10km/hhumidity: 86%, clouds: 100%
12km/hhumidity: 66%, clouds: 81%
19km/hhumidity: 57%, clouds: 46%
16km/hhumidity: 65%, clouds: 35%
12km/hhumidity: 65%, clouds: 49%
17km/hhumidity: 78%, clouds: 100%
18km/hhumidity: 74%, clouds: 100%
16km/hhumidity: 71%, clouds: 99%
18km/hhumidity: 71%, clouds: 99%
18km/hhumidity: 70%, clouds: 73%
14km/hhumidity: 80%, clouds: 87%
12km/hhumidity: 82%, clouds: 100%
14km/hhumidity: 83%, clouds: 100%
17km/hhumidity: 87%, clouds: 99%
19km/hhumidity: 87%, clouds: 99%
15km/hhumidity: 86%, clouds: 100%
18km/hhumidity: 72%, clouds: 99%
14km/hhumidity: 86%, clouds: 100%
9km/hhumidity: 86%, clouds: 100%
7km/hhumidity: 83%, clouds: 84%
5km/hhumidity: 83%, clouds: 65%
6km/hhumidity: 85%, clouds: 64%
4km/hhumidity: 82%, clouds: 66%
4km/hhumidity: 78%, clouds: 78%
8km/hhumidity: 66%, clouds: 89%
18km/hhumidity: 60%, clouds: 100%
13km/hhumidity: 67%, clouds: 100%
15km/hhumidity: 79%, clouds: 100%
22km/hhumidity: 81%, clouds: 100%
15km/hhumidity: 84%, clouds: 99%
23km/hhumidity: 76%, clouds: 73%
32km/hhumidity: 52%, clouds: 1%
18km/hhumidity: 60%, clouds: 29%
21km/hhumidity: 80%, clouds: 84%
16km/hhumidity: 82%, clouds: 92%
10km/hhumidity: 80%, clouds: 76%
