World sea water temperatures

Water temperature in San Sebastian in April

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Is it warm enough to swim in San Sebastian in April? Average water temperature in San Sebastian in April is 13.7°C and therefore is not suitable for comfortable swimming. The warmest sea in San Sebastian in April is 16.2°C, and the coldest is 11.8°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in San Sebastian

Changes water temperature in San Sebastian in April 2025, 2024

To get an accurate forecast for the water temperature in San Sebastian for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in San Sebastian, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of April.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
1 April13.9°C13.4°C11.8°C13.9°C
2 April13.6°C13.2°C11.9°C13.6°C
3 April13.5°C13.7°C12.1°C13.7°C
4 April13.9°C13.8°C12.1°C13.9°C
5 April13.9°C14°C12.1°C14°C
6 April13.8°C13.9°C12°C14.1°C
7 April13.3°C13.8°C12.1°C14.8°C
8 April13.2°C13.8°C12.1°C15.1°C
9 April14.5°C13.4°C12.3°C15°C
10 April14.6°C13.4°C12.3°C14.9°C
11 April14.1°C13.6°C12.3°C14.8°C
12 April14.2°C14°C12°C14.8°C
13 April14.6°C14.6°C12°C15°C
14 April14.3°C14.3°C12.5°C15.2°C
15 April14.1°C14°C12.7°C15.1°C
Day 2025 2024 Min Max
16 April14.2°C14°C12.6°C14.9°C
17 April14°C14°C12.7°C15°C
18 April14.1°C14.2°C12.9°C14.9°C
19 April14°C14°C12.8°C15°C
20 April14°C14.1°C12.8°C14.9°C
21 April14.1°C14°C12.8°C15.1°C
22 April13.7°C14.1°C12.8°C15°C
23 April13.9°C13.8°C12.7°C15.3°C
24 April14°C13.8°C12.6°C15.2°C
25 April14.3°C13.8°C12.8°C15.4°C
26 April14.4°C13.9°C12.9°C15.5°C
27 April13.5°C14.2°C13°C15.7°C
28 April14°C14°C13.1°C16.2°C
29 April14.7°C14°C13.1°C15.9°C
30 April14.9°C14.1°C13.3°C15.9°C
San Sebastian water temp chart in April

Average water temperature in San Sebastian in April over a decade

20162017201820192020
13.3°C14.2°C13.3°C13.2°C14.5°C
20212022202320242025
13.9°C13.1°C14°C13.9°C14°C

San Sebastian sea state in April

Chart comparing the height of waves in San Sebastian in April over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in San Sebastian in April

San Sebastian water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in April?

Want to know where the water temperature in April is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in April. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
La Concha Beach13.7°C11.9°C16.2°C
Pasaia13.7°C11.9°C16.2°C
Zurriola Beach13.6°C11.9°C15.8°C
Ondarreta Beach13.6°C11.9°C15.8°C
Zarautz13.6°C11.8°C15.7°C
Orio13.6°C11.8°C15.7°C
Hondarribia13.9°C11.8°C17°C
Irun13.9°C11.8°C17°C
Getaria13.6°C11.7°C15.7°C
Zumaia13.5°C11.7°C15.7°C

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for San Sebastian is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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