30YearWeather
Bilbao
When to avoid visiting Bilbao, Spain
Seasonal Comparison

Least Favorable Months in Bilbao

Based on 30 years of NASA satellite data, Bilbao enjoys relatively good weather year-round. However, if you're comparing months, December, October, June are the least favorable — though still perfectly visitable.

December61/100October62/100June63/100

Good news: Bilbao has no truly bad months!

With a score of 61/100, even December(the "worst" month) is still a reasonable time to visit. These months are simply the least favorable compared to other months in Bilbao, not objectively bad. Many travelers enjoy visiting during these periods and benefit from lower prices and fewer crowds.

Why December is the Least Favorable (But Still Okay) Time to Visit Bilbao

Is December a Good Time to Visit Bilbao?

👌Good option with minor considerations
Short Answer

Don't expect beach weather in Bilbao's December: 14.9°C cold seas despite 13°C air temps. Coastal scenery remains beautiful, just pack warm layers.

Decision Factors

Vaccinations required

Yellow Fever

Rough sea conditions

2.06m average wave height - Surfers Only

Peak tourist season

99% of annual peak - expect crowds and peak prices

Cold sea - swimming challenging

14.9°C sea temperature - Polar Plunge

Health precautions needed

Be aware of: Leptospirosis, Leishmaniasis, Hantavirus

Exceptional dining scene

35 Michelin-listed restaurants

Good For

  • 🏛️
    Cultural tourists

    Comfortable conditions for exploring museums and sites

  • 💼
    Business travelers

    Climate-controlled meetings unaffected by weather

  • 🎯
    Adventure seekers

    2.06m waves - good for surfing and water sports

Who Should Avoid

  • 🏖️
    Beach lovers

    Sea temperature only 14.9°C - too cold for comfortable swimming

  • 💰
    Budget travelers

    Peak season means premium prices everywhere

  • 👴
    Elderly travelers

    79% humidity creates difficult conditions

930 observations30-year historical data
Confidence: 99%

Key Challenges During These Months

Challenging Conditions

Weather conditions may limit outdoor activities and sightseeing options

Months to Avoid: Detailed Breakdown

Worst61

December

Rough sea conditions, Peak tourist season

View details
2nd Worst62

October

Rough sea conditions, Peak tourist season

View details
3rd Worst63

June

Very high humidity, Peak tourist season

View details

Looking for the Best Time Instead?

Discover the optimal months to visit Bilbao with ideal weather conditions, fewer crowds, and better prices.

Best Time to Visit Bilbao

Frequently Asked Questions

When should I avoid visiting Bilbao?

Based on 30 years of data, the most challenging months are December, October, June. Primary concerns include: rough sea conditions, peak tourist season.

What is the worst month to visit Bilbao?

December is typically the most challenging month, scoring only 61/100 in our travel conditions analysis.

Can I still visit during these months?

Yes, many travelers still visit during challenging months. Come prepared with appropriate gear, flexible bookings, and backup plans. Lower prices and fewer tourists can offset the weather challenges.

Are hotels cheaper during these months?

Often yes. Low season typically means reduced hotel rates, easier reservations, and fewer crowds at popular attractions. Some travelers prefer this trade-off.