San Sebastián in December

July and August bring perfect beach weather but also crowds and €300+ hotel rates. La Concha gets packed by noon, and good pintxos bars require 20-minute waits. September hits the sweet spot - warm ocean temperatures, fewer tourists, and restaurant reservations become possible again. The International Film Festival in late September adds glamour but books up accommodation. May through June offers mild weather perfect for walking. Ocean stays chilly (around 18°C) but pintxos season runs year-round. Hotel prices drop 40% from peak summer. October can surprise you with warm days, though rain becomes more frequent. Many beach clubs close by month's end, but the food scene never sleeps. Winter (November-March) brings serious rain and wind. But this is when locals reclaim their city, and you'll find the most authentic pintxos experiences without tourist crowds.