If you planning to travel to Antrim Castle, Antrim, Northern Ireland, 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 5:48 AM. The temperature feels like 53.150000000000006 with a humidity level of 72 so dress accordingly. Cloud coverage is 50 percent with visibility at 14.6 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 17 MPH. At the end of the day don’t miss the sunset at 6:49 PM.