The best time to visit Swansea for camping is between April and September outside of school holidays to enjoy the most clement weather without the masses present. Swansea itself is an all-year destination, but if you’re sleeping under canvas you’ll likely be based on the Gower, where most campsites are open April-September. July’s Gower Festival, with music performances held in churches across the Gower, and September’s arts-and-culture-based Swansea International Festival are especially lively times. You can also explore different options for camping near Swansea on Hipcamp.