Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Donostia / San Sebastian is from July, September, October, but considering flight prices and crowds, the best months to visit are May, June, October. — consistent weather climate
🌦Humid
| Score | 28 | 49 | 51 | 56 | 68 | 68 | 78 | 69 | 72 | 73 | 41 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cool & rainy | Cool & rainy | Cool & rainy | Humid | Pleasant | Humid | Humid | Cool & rainy | Cool & rainy | Cold |
| Temperature | 6–12°C | 7–15°C | 8–16°C | 9–17°C | 12–20°C | 15–22°C | 17–24°C | 17–25°C | 16–23°C | 14–21°C | 10–16°C | 8–14°C |
| Feels like | 3–10°C | 5–13°C | 6–14°C | 7–16°C | 11–20°C | 16–24°C | 18–26°C | 19–27°C | 16–25°C | 13–21°C | 8–15°C | 5–12°C |
| Precipitation | 158mm 16 days | 118mm 13 days | 150mm 17 days | 123mm 16 days | 120mm 17 days | 118mm 17 days | 56mm 12 days | 112mm 14 days | 149mm 16 days | 155mm 14 days | 195mm 18 days | 240mm 20 days |
| Sunshine | 4.9h ☀︎ 52% | 6.1h ☀︎ 58% | 7.4h ☀︎ 62% | 8.0h ☀︎ 59% | 9.3h ☀︎ 63% | 8.7h ☀︎ 57% | 11.1h ☀︎ 74% | 10.5h ☀︎ 76% | 9.5h ☀︎ 76% | 6.7h ☀︎ 61% | 4.9h ☀︎ 51% | 4.1h ☀︎ 46% |
| Wind | S · 19 km/h | S · 20 km/h | SW · 20 km/h | W · 17 km/h | NW · 15 km/h | NW · 14 km/h | NW · 13 km/h | NW · 14 km/h | SW · 16 km/h | S · 19 km/h | S · 19 km/h | SW · 22 km/h |
| Humidity (%) | 79% | 77% | 76% | 77% | 81% | 84% | 82% | 82% | 80% | 77% | 80% | 80% |
| Day length | 9.4h | 10.5h | 12.0h | 13.4h | 14.7h | 15.3h | 15.0h | 13.9h | 12.5h | 11.0h | 9.7h | 9.0h |
| Tourist Crowds | Low season | Low season | Low season | Shoulder season | Shoulder season | Shoulder season | High season | High season | High season | Shoulder season | Low season | Low season |
Held annually in September, this prestigious film festival attracts international stars and cinephiles to the city. The…
This unique and vibrant festival on January 20th sees thousands of drummers parade through the city for 24 hours. Despit…
One of Europe's oldest and most prestigious jazz festivals, Jazzaldia takes over San Sebastian in July. The warm summer…
These historic rowing regattas, held on the first two Sundays of September, are a highlight of the Basque sporting calen…
This international gastronomy congress in October brings together top chefs and food enthusiasts from around the world.…
Held in mid-August, this week-long festival is a vibrant celebration with concerts, fireworks, traditional Basque sports…
Held in late October, this niche film festival caters to fans of fantasy, horror, and science fiction cinema. The weathe…
Conventional travel wisdom insists on July for sun, but San Sebastián belongs to October, when the sea is still warm, the summer crowds evaporate, and the city returns to being an unapologetic temple of appetite.
San Sebastián is built around water, stone, and an appetite so serious it borders on religion. Curving gracefully along the Bay of Biscay just shy of the French border, this Basque capital is framed by the steep emerald promontories of Monte Urgull and Monte Igueldo, with the crescent of Playa de la Concha anchored between them. Most travelers assume you must visit when the Iberian summer is at its peak. They arrive in midsummer expecting warm sun and effortless coastal glamour, only to spend August jostling three-deep at pintxo counters in the Parte Vieja and competing for square inches of sand. If you want the city that locals actually love—the Donostia that belongs to the donostiarras—you need to look past the standard beach brochure and arrive when the summer fever breaks.
Look at any basic tourist guide and you will be told to visit in July, when rainfall is at its annual low. That advice misses the soul of the place. October is our absolute peak for Donostia, and the reason is simple: the trade-off overwhelmingly favors you. The fierce summer tourist tide has receded, leaving the stone alleys of the Parte Vieja breathing freely again. You can actually walk up to a bar, catch the eye of the bartender, and eat without guarding your elbow space.
Yet the weather holds remarkably gentle. The air settles around an easy daytime warmth, and the Atlantic retains the heat it banked all summer, making a late-afternoon swim off Playa de Ondarreta or a surf session at Playa de Zurriola feel serene rather than punishing. Yes, Atlantic rain showers roll off the bay more frequently, but Basque showers are part of the landscape’s rhythm, not a cancellation of daily life. Between them, the light turns soft and golden across the Kursaal facade.
Culinary energy peaks now. October hosts San Sebastian Gastronomika, bringing an electric buzz of master chefs and wine obsessives into the neighborhood taverns. Toward the end of the month, the San Sebastian Fantasy and Horror Film Festival takes over indoor venues, offering late-night cinema thrills precisely when a brisk autumn drizzle makes ducking into a theater feel like refuge. October is intelligent, relaxed, and richly fed.
July is the driest month by a long margin, and August pushes warmth to its absolute limit, with apparent temperatures drifting into the high twenties. If your sole criterion for a Basque holiday is lying on Playa de la Concha under blue skies without an umbrella on standby, this is when you come. The city buzzes with undeniable theatrical energy.
In July, the San Sebastian Jazz Festival fills the waterfront and open plazas with music, much of it drifting freely out over the tide. August follows with San Sebastian Big Week, turning the bay into an amphitheater for nightly firework competitions and traditional Basque sports that pack the promenade from end to end.
There is an undeniable magic to those warm evenings, but the compromise is steep. The city operates at maximum capacity. Prices soar, spontaneous dinners in the Parte Vieja become endurance tests, and the intimate grace of neighborhood life gets submerged beneath coach parties and weekenders from across the border. It is undeniably fun, but it is not quiet, and it is rarely comfortable if you dislike a crowd.
September bridges the summer rush and the autumn lull with enormous flair. The first two Sundays of the month bring the La Concha Bay Rowing Regattas, an ancient and fiercely contested Basque spectacle where sleek trainera rowing boats slice through choppy bay waters while tens of thousands of spectators line the railings of Monte Urgull in team colors.
By late September, the city pivots from maritime tradition to global glamour with the San Sebastian International Film Festival. The grand boulevard flanking the river turns into a promenade of filmmakers and critics, and the open terrace outside the Kursaal buzzes with post-screening debates.
The days remain thoroughly warm, ideal for a hike along the headland toward the sculpted iron anchors of Peine del Viento. Rain begins to tick upward compared to July, but it arrives mostly as dramatic coastal squalls that clear into crisp, luminous afternoons.
Spring along the Cantabrian Sea is an unpredictable romance. April and May bring lush green life to the hillsides flanking the city, but the Atlantic air is temperamental. You will encounter the classic sirimiri—a fine, persistent Basque drizzle that floats on the breeze without quite turning into a downpour.
By May and June, daylight stretches far into the evening, and outdoor tables fill along the surf-facing terraces of Gros. Daytime temperatures rise to a pleasant, jacket-free zone, perfect for climbing Monte Igueldo or meandering the coastline toward France. You can wander the streets without any of the midsummer claustrophobia.
Just keep your expectations calibrated: June can deliver brilliant beach days, but it can just as easily deliver three consecutive grey mornings where the sea mist clings stubbornly to the bay. Come for the food, the cycling, and the unhurried pace, and consider any sustained sunshine a bonus.
Winter in Donostia is wet, dark, and wild. From November through December, storms charge into the Bay of Biscay with ferocity, dumping torrential rains that make umbrellas entirely useless against horizontal coastal gales. December is the dampest stretch of the calendar, a month when you come for restorative bowls of fish soup and long tavern lunches rather than ocean views.
Yet the dead of winter holds the city’s most extraordinary cultural moment. On January 20th, the San Sebastian Drum Festival unleashes a relentless, 24-hour civic roar. Thousands of donostiarras, dressed in traditional culinary whites and historical military uniforms, march and drum through every plaza in freezing air. It is not an event staged for tourists; it is a proud, deafening burst of identity.
By February and March, the rain lightens slightly, though raw breezes still sweep off the ocean. If you love moody seascapes, empty promenades, and having legendary counter displays entirely to yourself, winter offers deep authenticity—provided you pack waterproof boots and expect grey skies.