Castro Urdiales
Spain
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Castro Urdiales, Spain

In January, the average sea temperature in Castro Urdiales, Spain, is 13°C (55.4°F). Note: Swimming in 13°C (55.4°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique. Weather in January »
The month with the coldest seawater in Castro Urdiales, Spain, is February, with an average sea temperature of 12.7°C (54.9°F). Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Weather in February »

In Castro Urdiales, Spain, in March, the average water temperature is 12.8°C (55°F). Note: Swimming in 12.8°C (55°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique. Weather in March »

In Castro Urdiales, Spain, the average seawater temperature in April is 13.9°C (57°F). Note: Swimming in 13.9°C (57°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique. Weather in April »

In May, the average sea temperature in Castro Urdiales, Spain, is 16.1°C (61°F). Note: For swimming, a surface water temperature of 16.1°C (61°F) is not enjoyable for the majority. Weather in May »

In Castro Urdiales, Spain, in June, the average water temperature is 18.7°C (65.7°F). Note: For swimming, a surface water temperature of 18.7°C (65.7°F) is not enjoyable for the majority. Weather in June »

In Castro Urdiales, Spain, in July, the average water temperature is 20.3°C (68.5°F). Note: For most, swimming in 20.3°C (68.5°F) is not an enjoyable activity. Weather in July »

August is the month with the warmest seawater in Castro Urdiales, Spain, with an average sea temperature of 21.2°C (70.2°F). Note: Swimming in 21.2°C (70.2°F) is not enjoyable for the majority. Weather in August »

In Castro Urdiales, Spain, the average seawater temperature in September is 20.6°C (69.1°F). Note: Swimming in 20.6°C (69.1°F) is not enjoyable for the majority. Weather in September »

In Castro Urdiales, Spain, in October, the average water temperature is 18.8°C (65.8°F). Note: Swimming in 18.8°C (65.8°F) is not enjoyable for the majority. Weather in October »

In November, the average sea temperature in Castro Urdiales, Spain, is 16.6°C (61.9°F). Note: Swimming in 16.6°C (61.9°F) is not enjoyable for the majority. Weather in November »

In Castro Urdiales, Spain, the average seawater temperature in December is 14.3°C (57.7°F). Note: Swimming in 14.3°C (57.7°F) is considered life-threatening. Weather in December »

What is the month with the coldest sea water in Castro Urdiales?

With an average sea temperature of 12.7°C (54.9°F), February is the month with the coldest seawater.

When are the longest days in Castro Urdiales?

The month with the longest days is June, with an average of 15.4h of daylight.

When is the sea warmest in Castro Urdiales?

August is the month with the warmest seawater in Castro Urdiales, with an average sea temperature of 21.2°C (70.2°F).

What is the month with the shortest days in Castro Urdiales?

December has the shortest days of the year in Castro Urdiales, Spain, with an average of 9h of daylight.
Average sea temperature - Castro Urdiales, Spain

The best month for swimming (with the highest average sea temperature) is August (21.2°C).
The coldest month (with the lowest average sea temperature) is February (12.7°C).

Average daylight - Castro Urdiales, Spain