In winter, temperatures in Istanbul range between 5°C-12°C, making it quite cold. However, the winds are much gentler, making it an ideal time for those who don't mind the low temperatures. Though it might be too cold to swim, visitors can still go sailing in winter if they have the right gear and equipment. December to February are good months to sail because the crowds are usually lighter, allowing visitors to enjoy the view from the Bosphorus. Show more