St John Climate & Weather Averages

Weather Information for St John

St. John in the US Virgin Islands enjoys a quintessentially tropical climate, defined by warm temperatures, gentle trade winds, and plenty of sunshine throughout the year. Perfect for a luxury Caribbean yacht charter, the island benefits from consistently clear weather and sparkling seas, making it a favorite for snorkeling, beach days, and tranquil cruising. Daytime temperatures typically sit between 26°C and 30°C, with cooling breezes drifting in from the northeast, ideal for watersports sessions, lazy afternoons on deck, and al fresco dining beneath the palms.

St John experiences two main seasons: a warm, drier period from winter into early summer, and a more humid, rain-dappled phase through late summer and autumn. The prevailing easterly trade winds keep the air fresh across most of the year, making even the hotter months feel comfortable on the water. Spring brings some of the island’s most pleasant weather, with calm seas and clear skies, conditions that are particularly popular for snorkeling and exploring the island’s protected national park bays. Rainfall increases from August to November, but showers tend to be short, tropical bursts followed by bright sunshine. These months also mark the height of hurricane season across the wider Caribbean, although St John often enjoys long stretches of tranquil, crystal-clear days between passing systems. Winter, from December to February, is wonderfully warm, with average temperatures around 26°C, making it a peak season for Virgin Islands yacht charters. Cooler evenings and light breezes create an especially comfortable atmosphere both onshore and onboard, while the sea remains reliably warm for swimming at any time of day.