03/08/2026
If there's one week when the city truly comes alive, it's Semana Grande (Aste Nagusia).
📅 August 8–15
Every year, Donostia celebrates its biggest summer festival with eight days of concerts, fireworks, traditional Basque sports, street performances, family activities, food, and celebrations across the entire city.
🎆 Don't miss...
The International Fireworks Competition: Every night, a different pyrotechnic company lights up La Co**ha Bay.
Sagüés Concerts: Free live music by the sea every evening
Traditional Basque Culture: Expect herri kirolak (Basque rural sports), giants and big-head parades, folk music, street entertainment, and activities that bring local traditions to life throughout the week.
✨ Local Tips
• Arrive early if you want a good spot for the fireworks along La Co**ha Bay.
• Walk instead of driving—the city gets busy, and many streets become pedestrian-friendly.
• Stay out after the fireworks. The celebration continues with concerts, bars, and a lively atmosphere well into the night.
➡️ Our favorite plan?
Start with a leisurely afternoon in the Old Town, enjoy pintxos before sunset, find a spot along La Co**ha for the fireworks, then head to Sagüés for live music by the sea.
✨ Save this guide for your trip to San Sebastian