If you planning to travel to St. Jean Beach, St. Barthelemy, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 10:41 AM. The temperature feels like 79.6 with a humidity level of 77 so dress accordingly. Cloud coverage is 0 percent with visibility at 14.8 percent. Today’s UV index is 8, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 16 MPH. At the end of the day don’t miss the sunset at 10:06 PM.