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San Sebastian Weather in October
In San Sebastian, October brings very high daytime temperatures around 31°C (88°F), with nights cooling to 24°C (75°F). Expect quite a bit of rainfall this month.
Rainfall in San Sebastian in October
Typically, you can expect about 18 days of rain this month, with 129 mm (5.1 in) on average. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in San Sebastian in October
October in San Sebastian sees highs of 31°C (88°F) and lows of 24°C (75°F) overnight. Mornings and evenings are often more comfortable than the peak afternoon hours. With lows around 24°C (75°F), the nights are warm enough that a sheet is usually all you need for bedding.October in San Sebastian has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
San Sebastian Temperature in October
Min Temperature
24°C (75°F)
Max Temperature
31°C (88°F)
Chance of Rain
58%
Precipitation
129 mm (5.1 in)
Rainy days
18 days
San Sebastian Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Sebastian - and find the best time to visit.
Daily Historical Temperatures
48-year average (1977-2025)
Based on our historical records, temperatures in San Sebastian typically stay consistent throughout October, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in October
Historical weather records for San Sebastian in October
Browse day-by-day weather records for San Sebastian spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Sebastian historical weather extremes in October
Based on 28 years of weather observations in San Sebastian between 1997 and 2025, these are the recorded extremes.
- On October 26, 2021, temperatures climbed to 39°C (102°F), marking the warmest October day on record.
- On October 28, 2007, San Sebastian saw its coldest October day with temperatures maxing out at 24°C (75°F).
- The lowest overnight temperature recorded in October was 21°C (70°F) (October 23, 2011).
Best Places in Puerto Rico in October
Find out more about the weather in Puerto Rico and which places have the best travel conditions in this month. See all of Puerto Rico 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 Sebastian in October
Warm weather calls for comfortable, breathable clothing in October. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho.
What To Do in San Sebastian in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
San Sebastian 3-Day Forecast
More climate data for San Sebastian
See the full San Sebastian climate overview or explore weather in Puerto Rico.
Popular in October
Where to go in October - average daytime high across popular destinations.
San Juan
31°C (88°F) Rio Grande
30°C (86°F) Aguada
30°C (86°F) Luquillo30°C (86°F) Culebra29°C (84°F) Rincon30°C (86°F) Vieques29°C (84°F) Fajardo30°C (86°F) Bucket list
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