The best time to go to Plymouth, Tobago, is during the dry season, which runs from December to May.During these months, you'll experience consistently sunny days with lower humidity and minimal rainfall, making it ideal for enjoying Tobago's outdoor activities and beaches. The calm seas are great for snorkeling, diving, and boat trips to nearby reefs and cays. This period is particularly good for couples seeking a relaxing beach vacation, as the weather allows for uninterrupted enjoyment of the coastline.From June to November, the wet season brings more rain and higher humidity. While there are still plenty of sunny periods, you can expect occasional showers, sometimes heavy.