If you planning to travel to St Mary's on the Harbour, Castletown, England, United Kingdom, 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 6:17 AM. The temperature feels like 51.099999999999994 with a humidity level of 82 so dress accordingly. Cloud coverage is 70 percent with visibility at 14.4 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 18 MPH. At the end of the day don’t miss the sunset at 6:35 PM.