If you planning to travel to Belfast Harbor, Belfast, Maine, 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 11:19 AM. The temperature feels like 50.099999999999994 with a humidity level of 94 so dress accordingly. Cloud coverage is 62 percent with visibility at 10.3 percent. Today’s UV index is 3, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 9:18 PM.