Live WBGT for Cruz Bay, the ferry-gateway town to St. John and Virgin Islands National Park. The compact harbor town is usually breezy and comfortable, but it is the doorway to exposed trails and beachesthat run much hotter, so plan here and check those spots before you go.
Last updated July 9, 2026 · Live data refreshes every 15 min
Cruz Bay is where nearly every St. John day begins, the ferry dock, the shops ofWharfside Village and Mongoose Junction, and the outfitters for the national park. It is small, walkable, and open to the harbor breeze, so the town itself is often one of the cooler places on the island. The heat waits on the trails and beaches beyond it.
A cool base for a hot island
Because Cruz Bay hugs the water and catches the trade winds, its WBGT usually sits lower than the interior. That makes it the right place to hydrate, plan, and time your outing, because a short taxi ride to a south-facing trailhead or an open beach lands you in a very different, fully-exposed heat world. See how sharply St. John swings between shade and sun on the St. John WBGTpage.
Plan here, then go
Fill up on water in town, there's little resupply on the trails.
Check your trailhead or beach on the map, not just Cruz Bay; the numbers can differ by a full band.
New arrivals should add margin for the first days, see acclimatization.
Local tip. Treat Cruz Bay's comfortable reading as the town's number, not the trail's. The whole point of checking here is to plan for the hotter places you're about to visit.
The live card on this page shows current WBGT for Cruz Bay, St. John, updated every 15 minutes. The compact harbor town is usually breezy, but the trails and beaches a short ride away can be much hotter, check those spots on the map before you set out.
Is Cruz Bay a good base for beating the heat on St. John?
Yes. Cruz Bay is small, walkable, and catches the harbor breeze, so the town itself is often comfortable. The heat risk on St. John is on the exposed trails and beaches, so use Cruz Bay to hydrate and plan, then time your outings to the cooler hours.