Tossa de Mar (Costa Brava) weather in December

Barcelona forum regulars describe December as genuinely mixed rather than reliably one thing: “rain, overcast and sun...it's not rare to have all the same day,” with typical midday readings around 14-16°C but mornings cold enough that layers matter more than any single forecast. It doesn't rain constantly — sunny stretches are “quite normal” in winter here — but a wet, chilly spell shows up most years, and posters note it has even snowed on rare occasions. The advice that repeats: dress warmly, carry a small foldable umbrella, and expect to shed a layer if the sun comes out. Our record: 14.6°C days, 7.5°C nights, only 4.8 rain days across the month and a 15.2°C sea — mild and mostly dry more often than the forum's mixed framing suggests, but cool enough that the layering advice holds.

Tossa de Mar's forum pushes back on the idea that Costa Brava winters are dreary: several posters describe January as chilly but typically sunny with clear blue skies, closer to a crisp day than the grey damp of a UK winter, which matches the destination's own mild low-teens-C average high. Most tourist-facing bars and restaurants close for the season in October, so the town reverts to serving its Catalan residents rather than visitors - it's quiet, but not shut down, and weekend day-trippers still fill the seafront spots when the weather cooperates.

Forum posters describe July as when the Costa Brava season really comes together - sea temperatures around 23C and genuinely comfortable for swimming, with the town noticeably livelier and warmer than earlier in summer. Posters note Tossa stays relatively calm midweek in early July, but by mid-month crowds build and stay heavy through the end of August, so early-to-mid-July offers a window with somewhat thinner crowds while conditions are already excellent. Heat and humidity are genuinely present by mid-July, and nights stay warm enough that even an after-8pm walk still feels balmy rather than cool - a real contrast to the shoulder-season evenings earlier in the year.