2026 Climate Averages

Weather: San Sebastián — October

It's a rainy period, but great for indoor activities, museums, and lower prices.

☔ Climate Overview

October is a wet time to visit San Sebastián. Warm weather with highs of 21°C—great for outdoor activities. Rain is common, so pack an umbrella. Being off-peak, you'll find better deals and fewer crowds. Sea temperature of 20°C is refreshing but swimmable.

7.7
GoTripzi Score Great

Based on weather comfort, crowds, prices, and activity options

Avg High

21°C

Avg Low

15°C

Rainy days

13days

Daylight

11.1h

Rainfall

135mm

Sunshine

7.6h/day

Humidity

78%

Humid
Sun Strength

4.1

Moderate
Wind

19 km/h (gusts 40)

Sea Temp

20°C 💧 Refreshing

Is October a good time to visit San Sebastián?

It's a rainy period, but great for indoor activities, museums, and lower prices.

Now

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Feels like --
Wind --
Humidity --
UV Index --
Local time —

Air Quality

Travel Context

  • Crowds
    Quiet
  • Travel Costs Shoulder Rates

Daylight

Sunrise

08:21

Sunset

19:28

11.1h daylight

Visiting San Sebastián in October: Pros & Cons

Pros

  • Comfortable temperatures for sightseeing
  • Fewer crowds and better hotel deals

Things to Do in October

Recommended for This Weather

🏛️ Museums & galleries
🍳 Cooking classes & food tours
🎭 Cultural tours & local experiences

San Sebastián Weather by Month

Month Avg High Avg Low Rain Sunshine Humidity UV Index Crowds Condition
Jan 13°C 8°C 15d (137mm) 5.8h
79% Humid
2.3 Moderate
Wet
Feb 15°C 9°C 12d (92mm) 7.2h
77% Humid
3.6 Moderate
Good
Mar 15°C 10°C 17d (120mm) 8.6h
75% Humid
5.2 High
Wet
Apr 17°C 11°C 14d (99mm) 9.6h
77% Humid
6.9 High
Wet
May 20°C 14°C 16d (103mm) 10.9h
80% Very Humid
8.1 Very High
Excellent
Jun 23°C 17°C 17d (131mm) 10.4h
83% Very Humid
8 Very High
Excellent
Jul 24°C 18°C 12d (52mm) 11.4h
82% Very Humid
8.4 Very High
Excellent
Aug 25°C 19°C 13d (98mm) 10.6h
82% Very Humid
7.5 Very High
Excellent
Sep 23°C 17°C 15d (135mm) 9.3h
79% Humid
5.8 High
Excellent
Oct Current 21°C 15°C 13d (135mm) 7.6h
78% Humid
4.1 Moderate
Wet
Nov 16°C 12°C 15d (173mm) 6.1h
80% Very Humid
2.5 Moderate
Wet
Dec 14°C 10°C 18d (183mm) 5.4h
81% Very Humid
2 Low
Wet

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Your Best MonthOctScore: 8
1.Oct
82.Nov
7.63.Apr
7.54.Jan
6.75.Mar
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6.37.Feb
5.68.Jul
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5.210.Sep
5.211.Jun
4.712.May
3.8

Where to Stay

See hotels, apartments & rentals around San Sebastián – live prices from Booking.com, Expedia, Vrbo and more

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San Sebastián

Basque culinary capital, including La Concha beach, La Concha beach promenade and Pintxos bar hopping in Parte Vieja, pintxos bars, and Michelin-starred dining.

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What to Pack for October

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions. A waterproof jacket and shoes are non-negotiable — showers are frequent.

Moderate Quiet

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📋Essentials
👕Clothing
👟Footwear
🎒Accessories
🧴Toiletries & Health

Planning a trip to San Sebastián?

💰 Off-peak — great deals available now

Frequently Asked Questions

Is October a good time to visit San Sebastián?
October is typically wet for visiting San Sebastián, with average highs of 21°C and around 13 rainy days. Plan your activities accordingly—outdoor sightseeing is best on dry days, while rainy days are perfect for museums and indoor attractions.
Does it get cold at night in San Sebastián in October?
Evenings in San Sebastián during October are mild at 15°C. A light cardigan or long sleeves for evenings is usually enough. Outdoor dining remains comfortable, making it a great time to enjoy rooftop bars and terrace restaurants.
What should I pack for San Sebastián in October?
With highs of 21°C and lows of 15°C in October, we recommend: Compact umbrella, Waterproof jacket/shell, Sunscreen SPF 30+, Sunglasses. Layering is key as temperatures can vary between air-conditioned interiors and outdoors. Comfortable walking shoes are essential for cobblestone streets.
Does it rain a lot in San Sebastián in October?
San Sebastián typically sees around 13 rainy days in October. Rain is usually in the form of brief showers rather than all-day downpours, so a compact umbrella is sufficient. Mornings tend to be drier, making them ideal for outdoor sightseeing.
Can you swim in San Sebastián in October?
October is suitable for swimming in San Sebastián, though the water may feel refreshing at first. Air temperatures average 21°C, and most swimmers find it enjoyable once they're in. Midday is usually the warmest time for a dip.
How many hours of daylight are there in San Sebastián in October?
In October, San Sebastián gets approximately 11.1 hours of daylight per day. This affects how much sightseeing you can fit in—longer days mean more time for outdoor activities, while shorter days are perfect for cozy museum visits and early dinners.
Is October peak season in San Sebastián?
No, October is not peak season in San Sebastián. Expect better value on accommodation, shorter queues at attractions, and fewer tourists at popular spots. This is an excellent time to experience the city like a local and enjoy a more authentic atmosphere.

Weather Data: Based on 2020–2025 historical climate data from Open-Meteo

Solar calculations: SunCalc (timezone: Europe/Madrid)

Last Updated: February 2026

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