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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Trade Wire UK weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Check the live forecast above before heading out in San Sebastian, as conditions along the Basque coast can shift quickly. Whether you’re planning a beach day or a pintxos crawl, knowing the local weather helps you make the most of your time.
What is the climate like in San Sebastian?
San Sebastian has a temperate oceanic climate, meaning mild winters and warm summers with fairly even rainfall year-round. The live forecast above shows today’s conditions, but for longer planning you may want to look at san sebastian weather by month to understand seasonal patterns. Autumn and winter are wettest, while summer brings the most reliable sunshine.
When should I visit for the best weather?
June through September offer the warmest temperatures and lowest rainfall, ideal for the beach and outdoor festivals. If you prefer quieter streets, san sebastian weather april and May are pleasantly mild with fewer crowds, though rain is still possible. For winter trips, san sebastian weather december stays cool but rarely drops below freezing.
What is the weather in San Sebastian in April?
April is mild, with highs around 16–18°C and regular rain showers. It’s a transitional month; pack layers and a waterproof jacket. The live forecast above gives the most up-to-date conditions if you’re travelling then.
How reliable are 14-day or 30-day forecasts for San Sebastian?
Long-range forecasts (like san sebastian weather 14 days or san sebastian weather 30 days) indicate general trends but aren’t reliable day-to-day. For short trips, the live forecast and a san sebastian weather 21 days outlook can give a useful flavour, but always check nearer the time.
Does San Sebastian get much rain in summer?
Summer is the driest season, but showers can still occur. July and August average around 100mm of rain each, often in short bursts. The live forecast above shows today’s chance of rain, so you can plan accordingly.
For a wider view of conditions across the UK, visit our UK weather hub, or see the 10 day weather forecast for UK if you’re planning a return trip.