Basque Country Weather & Climate Guide 2025
Plan your trip with detailed weather information and seasonal tips for Basque Country.
The Basque Country (Euskadi) is an autonomous community in northern Spain nestled between the Cantabrian mountains and the Bay of Biscay, celebrated worldwide for its extraordinary gastronomy, avant-garde architecture, and fiercely proud cultural identity. Home to Bilbao's transformative Guggenheim Museum and San Sebastián's legendary pintxos bars, the region blends industrial heritage with breathtaking coastal scenery and lush green valleys. With more Michelin stars per capita than almost anywhere on earth, the Basque Country offers travelers a uniquely sophisticated yet deeply authentic Spanish experience.
Best Time to Visit
Best Months
June to September
Summer brings the warmest, driest weather for enjoying beaches and outdoor activities, plus the region's major festivals including Aste Nagusia in Bilbao (August) and the cider season (January–April) for culture lovers.
Months to Avoid
November to February
November and December are the wettest months with up to 160–183mm of rainfall; January and February are cold and grey with very limited beach activity, though cider houses and cultural attractions remain open.
Climate Overview
The Basque Country has a temperate oceanic (Atlantic) climate, characterised by mild temperatures throughout the year, relatively high rainfall, and lush green landscapes. Coastal areas receive the most precipitation (over 1,200mm annually) while the interior Álava province has a drier, more continental climate. Summers are warm and pleasant (18–25°C) rather than scorching, making the region a refreshing alternative to southern Spain in peak summer.
Month-by-Month Guide
What to expect each month of the year.
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seasonal Planning Guide
Complete weather data, packing lists by season, and event calendars.
Seasonal Breakdown
Detailed information for each season.
🌸 Spring
March–May
Spring is variable with mild temperatures and occasional showers. The Basque countryside turns spectacularly green and wildflowers bloom on the hills. Fewer tourists and more affordable accommodation make this an excellent time to visit.
☀️ Summer
June–August
The best weather for beaches and outdoor activities, with warm days (22–26°C), long evenings, and the major festivals. July is the peak month for domestic Spanish tourism; August sees the major festivals including Aste Nagusia Bilbao. Accommodation must be booked months ahead.
🍂 Fall
September–November
September is arguably the best month to visit — warm weather (18–22°C), far fewer tourists than August, the San Sebastián Film Festival, and the txakoli grape harvest. October brings beautiful golden foliage but increasing rain. November becomes wet and grey.
❄️ Winter
December–February
Cool and often rainy on the coast, with cold temperatures in the interior mountain areas. Cider house season begins in January, providing a warm, convivial winter activity. Christmas markets in Bilbao and San Sebastián are charming, and the Basque Country is much quieter and cheaper.
What to Pack
Seasonal packing recommendations.
Year-Round Essentials
- Modest clothing (cover shoulders and knees)
- Comfortable walking shoes
- Sun protection (hat, sunscreen, sunglasses)
- Light scarf or shawl (for religious sites)
- Reusable water bottle
- Power adapter
- Basic first aid kit
Hot Weather Additions
- Lightweight, breathable fabrics
- Extra sun protection
- Cooling towel
- Light colors to reflect heat
- Sandals with back straps
Cool Weather Additions
- Warm layers (fleece, sweater)
- Light jacket or coat
- Rain gear (umbrella, waterproof jacket)
- Closed-toe shoes
- Warm accessories (if winter)
Events & Crowd Levels
Plan around busy periods and special events.
🔴 High Season
July–August (also Semana Grande/Aste Nagusia festival weeks)
Higher prices, advance booking essential, crowded attractions.
🟡 Shoulder Season
April–June and September–October
Good balance of weather and crowds. Reasonable prices.
🟢 Low Season
November–March (except Christmas period)
Best deals, fewer tourists. Some services may be limited.
Major Events & Holidays
Traditional cider houses open for the sagardo tasting season; txotx ritual at barrel openings throughout Gipuzkoa
San Sebastián's extraordinary patron saint festival with 24 hours of non-stop drumming parades
Vitoria-Gasteiz spring festival
One of the world's major film festivals bringing celebrities and cinema lovers to Donostia
Bilbao's biggest annual festival with concerts, fireworks, and week-long celebrations
San Sebastián's main summer festival with beach concerts, fireworks competitions, and events
The Basque capital's patron saint festival featuring the Celedón (flying figure) ceremony
Grape harvest celebrations in the txakoli wine country around Getaria and Zarautz
Plan Your Perfect Basque Country Trip
Get our complete seasonal guide with detailed packing lists, event calendars, and month-by-month planning tips.
Download Weather Guide