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Biscay

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Biscay Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Biscay year round climate

  • Spring (March–May): Average 55–61°F, mild climate with occasional rainfall and increasing sunny days. Popular activities: Coastal walks, visiting Bilbao museums. Recommended clothing: Light jacket, comfortable long pants or skirt.
  • Summer (June–August): Average 68–72°F, warm and dry climate with abundant sunshine and occasional showers. Popular activities: Beach leisure, water sports, exploring mountain towns. Recommended clothing: Short-sleeved T-shirts, shorts, sandals, and a light sun protection jacket.
  • Autumn (September–November): Average 57–68°F, comfortable and pleasant climate with increasing rainfall and greater weather variability. Popular activities: Enjoying local cuisine, visiting wineries, admiring autumn scenery. Recommended clothing: Comfortable long-sleeved clothing, light jacket, warm trousers.
  • Winter (December–February): Average 49–52°F, cold and humid climate with higher rainfall and possible overcast weather. Popular activities: Visiting museums, enjoying indoor activities, sipping hot drinks. Recommended clothing: Warm jacket, scarf, gloves, hat, and waterproof clothing.

Biscay climatological average

Annual average temperature: approx. 60.8°F / Annual rainfall: approx. 1135 mm / Summer humidity: 60%–70% / Rainiest month: January

Biscay monthly average temperature and precipitation

Month
Air temperature (°F)
Precipitation (mm)
January
49.5°F
165
February
50.9°F
83.7
March
55.9°F
75.7
April
56.5°F
72.7
May
61.7°F
78.7
June
68°F
68.3
July
71.1°F
14.7
August
72.7°F
71.3
September
68.4°F
131.3
October
67.1°F
85
November
57.7°F
162.3
December
52.7°F
127

Biscay weather for the next seven days

12/14
Sunday
Sunny
57.7°F/43.7°F
12/15
Monday
Sunny
57.9°F/44.6°F
12/16
Tuesday
Patchy rain nearby
55.2°F/50.1°F
12/17
Wednesday
Moderate rain
51°F/45.1°F
12/18
Thursday
Sunny
57.7°F/44.1°F
12/19
Friday
Patchy rain nearby
48.7°F/46.7°F
12/20
Saturday
Patchy rain nearby
49.7°F/41°F

Biscay Frequently Asked Questions and Useful Information for Travel

How long does it take to travel through the Bay of Biscay?

It usually takes a day to cross the Bay of Biscay. Making a stop in the bay may extend journey time to two days, but it rarely takes longer than two days. The exact time depends on the vessel and its speed.

Why is the Bay of Biscay famous?

The Bay of Biscay is renowned for its abundant marine life, including numerous whale and dolphin species, making it a prime location to spot over a third of the planet's cetacean species. It's also celebrated for its challenging yet rewarding sailing conditions due to strong currents and storms, and the scenic coastlines of France and Spain, dotted with picturesque fishing villages. It serves as a significant shipping route and is known for its frequent fog.

Can you swim in the Bay of Biscay?

Yes, swimming is possible in the Bay of Biscay. It is advisable to choose designated swimming areas and be mindful of the sea conditions.

What is the meaning of Biscay?

The name 'Biscay' primarily refers to the Bay of Biscay, a large bay of the Atlantic Ocean situated between the coasts of France and Spain. The name also relates to the historical province of Biscay (Vizcaya) in northern Spain, from which the bay derived its name. The Bay of Biscay is characterized by deep waters, strong currents, and rich marine biodiversity.

What marine life can be found in the Bay of Biscay?

The Bay of Biscay is a rich feeding ground for diverse marine life due to the confluence of warm and cold waters and deep underwater canyons. Visitors can spot over a third of the planet's cetacean species, including various whales and dolphins. The bay is also home to numerous fish such as herring, mackerel, anchovy, and sardine, as well as different species of seabirds.