The English capital is one of the most touristed cities anywhere in the world, with nearly 19 million arrivals in 2023—but when is the best time to visit London? While many choose to travel here during the summer to make the most of the many of the destination's parks, rooftop bars, and outdoor activities, all four seasons have something unique to offer for the traveler heading to London. Below, we break down when to visit for the best weather, the best rates, and more.