Weather in Santorini during December

December in Santorini feels crisp and unpredictable. Highs average 16.3°C (61°F) while lows dip to 13°C (55°F)—cool enough to need a proper jacket, but not freezing. You'll see roughly 49mm of rainfall spread across 8-9 rainy days, so expect short bursts rather than all-day downpours. The island still captures 8.1 sunshine hours daily, giving you decent light for exploring even as afternoons turn grey. Mornings often arrive damp and misty, with the Aegean wind picking up as evening approaches.

The island empties out in December. Cruise ships vanish, tavernas close for renovations, and locals reclaim their home. Prices drop noticeably—hotels and restaurants offer winter rates that feel like a different economy. You'll find yourself walking Oia's caldera path alone, or sitting in a quiet waterfront café with maybe one other table occupied. Shops still open but with shorter hours. This is when Santorini feels least like a postcard and most like a real place where people actually live.

Over the past decade, December in Santorini has remained remarkably consistent—temperatures haven't shifted dramatically, and rainfall patterns stay within the 45–55mm range. 2026 aligns with historical norms, so you can trust decade-old travel blogs. However, climate trends show slightly fewer rainy days than twenty years ago, though not enough to change packing decisions.

December suits budget travelers, photographers chasing moody light, and couples seeking solitude over crowds. If you're planning a 2026 trip, bring layers and waterproof gear, but don't expect monsoon conditions. The swimming season is firmly closed, but hiking the caldera rim, exploring archaeological sites, and wine tasting indoors all work beautifully. Book accommodations early—the winter rates attract European visitors escaping harsher climates.