December by way of February are definitely the coldest months but offer fewer travelers and will be the cheapest time to visit Barcelona. Allow me to introduce you to the Flamenco Present at Palau Dalmases, in which you can encounter the intensive enthusiasm of Flamenco in a sublime seventeenth-century palace. https://www.triptales.me/unlock-barcelonas-hidden-treasures-secret-spots-you-cant-miss/