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San Sebastian
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Water Temperature in the Bay of Biscay in San Sebastian, Spain: Current, Historical Data and Forecast
On this page, you will find comprehensive information about the sea temperature in San Sebastian in Spain, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.
Current Water Temperature in San Sebastian
12.2°C
TODAY
12.5°C
YESTERDAY
12.1°C
A WEEK AGO
Analysis, Historical Data, and Forecast of Water Temperature
Today sea water temperature in the Bay of Biscay in San Sebastian is 12.2°C. The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear.
It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart for Bay of Biscay in San Sebastian Over the Last 30 Days
The water temperature in San Sebastian today is lower than both a week ago and a month ago. Today's sea temperature is generally in line with historical values for this day.
According to our forecast, the sea temperature in San Sebastian will remain nearly unchanged in the coming days, its value will be 12.4°C.
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts across Spain to enhance accuracy.
Water temperature data for San Sebastian and nearby towns and resorts is gathered from various sources, including buoys and satellite sea and ocean surface maps provided by the NOAA agency. We also incorporate data from local authorities in each specific location worldwide to ensure more accurate temperature readings.
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| Feb 15 | 12.1°C | 12.0°C | |
| Feb 16 | 12.1°C | 12.5°C | |
| Feb 17 | 12.2°C | 12.5°C | |
| Feb 18 | 12.1°C | 12.5°C | |
| Feb 19 | 12.1°C | 12.3°C | |
| Feb 20 | 11.9°C | 12.5°C | |
| Feb 21 | 12.5°C | 12.3°C | |
| Feb 22 | 12.2°C | 12.5°C | |
| Feb 23 | 12.5°C | 12.2°C | |
| Feb 24 | 12.3°C | 12.2°C | |
| Feb 25 | 12.5°C | 12.2°C | |
| Feb 26 | 12.3°C | 12.2°C | |
| Feb 27 | 12.3°C | 12.2°C | |
| Feb 28 | 12.3°C | 12.2°C | |
| Mar 1 | 13.3°C | 12.3°C | |
| Mar 2 | 13.3°C | 12.4°C |
Sea Temperature in San Sebastian Throughout the Year
Throughout the year, the sea temperature in San Sebastian exceeds 77°F (25°C) for 0 days, exceeds 72°F (22°C) for 37 days, and exceeds 64°F (18°C) for 145 days.
Below is the annual chart of sea temperature changes in the Bay of Biscay in San Sebastian.
January
| Minimum | Average | Maximum |
|---|---|---|
| 11°C | 13°C | 15°C |
February
| Minimum | Average | Maximum |
|---|---|---|
| 10°C | 12°C | 14°C |
March
| Minimum | Average | Maximum |
|---|---|---|
| 11°C | 13°C | 15°C |
April
| Minimum | Average | Maximum |
|---|---|---|
| 11°C | 13.5°C | 16°C |
May
| Minimum | Average | Maximum |
|---|---|---|
| 13°C | 16.5°C | 20°C |
June
| Minimum | Average | Maximum |
|---|---|---|
| 16°C | 19.5°C | 23°C |
July
| Minimum | Average | Maximum |
|---|---|---|
| 19°C | 21.5°C | 24°C |
August
| Minimum | Average | Maximum |
|---|---|---|
| 20°C | 22.5°C | 25°C |
September
| Minimum | Average | Maximum |
|---|---|---|
| 19°C | 21.5°C | 24°C |
October
| Minimum | Average | Maximum |
|---|---|---|
| 14°C | 18°C | 22°C |
November
| Minimum | Average | Maximum |
|---|---|---|
| 13°C | 16°C | 19°C |
December
| Minimum | Average | Maximum |
|---|---|---|
| 12°C | 14°C | 16°C |
Monthly Water Temperature Histogram for Bay of Biscay in San Sebastian
You can explore detailed data on how the water temperature in San Sebastian varies each month:
What Beaches Are There In and Around San Sebastian?
Beach Of La Concha
Beach Of La Concha is a 5-stars sandy beach, is located directly in San Sebastian. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Beach Of La Concha is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Atardecer En Zurriola
Atardecer En Zurriola is a 2-stars sandy beach, is located directly in San Sebastian. There are restrooms. There are shops. There are cafés.
Playa De La Concha
Playa De La Concha is a 5-stars sandy beach, is located directly in San Sebastian. There are lifeguards on the beach. For those who prefer clothing-optional beaches, Playa De La Concha is a designated nudist beach. There is parking. There are restrooms. There are cafés. Playa De La Concha is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Beach Of La Concha / Kontxa Hondartza
Beach Of La Concha / Kontxa Hondartza is a 1-stars sandy beach, is located directly in San Sebastian.
Zurriola Beach / Zurriolaka Hondartza
Zurriola Beach / Zurriolaka Hondartza is a 1-stars sandy beach, is located directly in San Sebastian.
Playa De La Ondarreta
Playa De La Ondarreta is a 5-stars sandy beach, located in a 2 km (1 miles) radius of San Sebastian. There are lifeguards on the beach. There is parking. There are restrooms. There are cafés. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Ondaretta Beach
Ondaretta Beach is a 3-stars sandy beach, located in a 2 km (1 miles) radius of San Sebastian. There are restrooms. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Isla Santa Clara
Isla Santa Clara is a 5-stars sandy beach, located in a 2 km (1 miles) radius of San Sebastian. There are lifeguards on the beach. There are restrooms. Snorkeling is possible. It is suitable for surfing. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
Playa De Kalaburtza
Playa De Kalaburtza is a 2-stars sandy beach, located in a 5 km (3 miles) radius of San Sebastian. There is parking. There are cafés.
San Juan
San Juan is a 1-stars sandy beach, located in a 5 km (3 miles) radius of San Sebastian.
Cala Agiti / Agiti Cove
Cala Agiti / Agiti Cove is a 1-stars sandy beach, located in a 7 km (4 miles) radius of San Sebastian.
Agiti
Agiti is a 2-stars sandy beach, located in a 7 km (4 miles) radius of San Sebastian. For those who prefer clothing-optional beaches, Agiti is a designated nudist beach. There is parking. There are cafés. Snorkeling is possible.
Agiti Hondartza
Agiti Hondartza is a 1-stars sandy beach, located in a 8 km (5 miles) radius of San Sebastian.
Playa Agiti Bidea
Playa Agiti Bidea is a 1-stars sandy beach, located in a 8 km (5 miles) radius of San Sebastian.
Azabaratza
Azabaratza is a 2-stars sandy beach, located in a 9 km (6 miles) radius of San Sebastian. For those who prefer clothing-optional beaches, Azabaratza is a designated nudist beach. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.
San Sebastian Weather
FEBRUARY 23
11°C / 18°C
overcast clouds: 85-100%humidity: 67% | wind: 4 km/h
FEBRUARY 24
10°C / 13°C
overcast clouds: 85-100%humidity: 85% | wind: 6 km/h
FEBRUARY 25
9°C / 11°C
light rainhumidity: 77% | wind: 4 km/h
FEBRUARY 26
7°C / 10°C
scattered clouds: 25-50%humidity: 77% | wind: 3 km/h
Sea Temperature in the Bay of Biscay in San Sebastian: General Trends and Swimming Opportunities
The Basque Country in Spain experiences a maritime, specifically oceanic climate typified by mild temperatures all year round with moderate rainfall evenly distributed throughout the year. Summers are warm but not scorching, usually around 20-25°C, while winters are mild, with temperatures rarely falling below 6°C.
San Sebastian is located in Europe in the Northern Hemisphere at a latitude of 43 degrees, along the shores of the Bay of Biscay. San Sebastian lies within the Basque Country in Spain.
The average annual daytime air temperature in San Sebastian is 18°C (64°F), with the average nighttime temperature being 11°C (52°F). The highest average daily temperature occurs in August, reaching 24°C (75°F), while the lowest is in January at 12°C (54°F). As for nighttime temperatures, the minimum average temperature of 6°C (42°F) is recorded in January, and the maximum is in August, reaching 17°C (62°F).
According to historical data, San Sebastian experiences 139 rainy days per year, which accounts for 38 percent of all days in the year. On average, there are 12 rainy days each month. The wettest month is November, with 14 rainy days and 153 mm (6.0 inches) of precipitation, while the driest month is July, which typically has 8 rainy days and only 63 mm (2.5 inches) of precipitation.
The average annual water temperature in Bay of Biscay in San Sebastian is 17°C (63°F). In February, the water reaches its lowest point of the year at 10°C (50°F), while in August, it peaks at 25°C (77°F). In San Sebastian, the water temperature in the Bay of Biscay never consistently reaches a comfortable level for swimming in any month.
Geographical Location of San Sebastian
Nearby Cities
Frequently Asked Questions About San Sebastian and its Water Temperatures
What is the current sea temperature in San Sebastian?
The water temperature today in the Bay of Biscay in San Sebastian is 54°F (12.2°C).
In which months is the water temperature in San Sebastian comfortable for swimming?
It cannot be guaranteed that the water temperature in San Sebastian will be comfortable for swimming in any month of the year.
What is the water temperature in San Sebastian during the winter?
The water temperature in the Bay of Biscay in San Sebastian during the winter ranges from 10°C to 16°C (50°F to 61°F).
What is the water temperature in San Sebastian during the spring?
The water temperature in the Bay of Biscay in San Sebastian during the spring ranges from 11°C to 20°C (52°F to 68°F).
What is the water temperature in San Sebastian during the summer?
The water temperature in the Bay of Biscay in San Sebastian during the summer ranges from 16°C to 25°C (61°F to 77°F).
What is the water temperature in San Sebastian during the fall?
The water temperature in the Bay of Biscay in San Sebastian during the fall ranges from 13°C to 24°C (55°F to 75°F).
Is it possible to swim in the sea in San Sebastian at any time of the year?
The Bay of Biscay in San Sebastian is quite cool, and swimming is only possible in June, July, August, September, and October when the water temperature reaches 21°C (70°F).
Is San Sebastian a popular tourist destination for beach vacations?
San Sebastian a fairly popular beach destination, offering good conditions for swimming and relaxation, with a steady flow of tourists, especially during peak seasons.
What sea temperatures can I expect in San Sebastian in the next month?
In March, the water temperature in the Bay of Biscay in San Sebastian will range between 52°F (11°C) and 59°F (15°C)