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San Sebastián Weather in October
October in San Sebastián typically sees daytime highs of 19°C (66°F) and nighttime lows of 13°C (55°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in San Sebastián in October
This month experiences about 15 days of rain according to historical data, averaging 133 mm (5.2 in). When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in San Sebastián in October
If you're visiting San Sebastián in October, expect highs of 19°C (66°F) and overnight lows around 13°C (55°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in San Sebastián in October
The city usually sees around 134 hours of sunlight, indicating a moderately sunny period.If you prefer enjoying temperate temperatures and rain-free days, June, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
San Sebastián Temperature in October
Min Temperature
13°C (55°F)
Max Temperature
19°C (66°F)
Chance of Rain
48%
Precipitation
133 mm (5.2 in)
Rainy days
15 days
Humidity
75%
Sunshine
134 hours
Percentage Sunshine
San Sebastián Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Sebastián - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Sebastián typically stay consistent throughout October, with daily highs averaging around 19°C (66°F). Nights are cool, with lows typically ranging from 10°C (50°F) to 14°C (57°F).
Average temperatures in October
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather records for San Sebastián in October
Browse day-by-day weather records for San Sebastián spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Sebastián historical weather extremes in October
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in San Sebastián.
- The hottest October day on record in San Sebastián reached 34°C (93°F) (October 2, 2023).
- The lowest daytime temperature in October was 9°C (48°F), recorded on October 26, 2003.
- Nighttime temperatures dropped to -1°C (30°F) on October 31, 1997, marking the coldest October night on record.
Best Places in Spain in October
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in October →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San Sebastián in October
Comfortable temperatures call for an easy wardrobe in October. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in San Sebastián in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping6/10 -
Outdoor sports9/10
San Sebastián 3-Day Forecast
More climate data for San Sebastián
Temperature Rainfall Sunshine Humidity
See the full San Sebastián climate overview or explore weather in Spain.
Popular in October
Where to go in October - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
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