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 10:04 AM. The temperature feels like 78.7 with a humidity level of 71 so dress accordingly. Cloud coverage is 9 percent with visibility at 14.4 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling east-northeast at a speed of 21 MPH. At the end of the day don’t miss the sunset at 10:26 PM.