If you planning to travel to Slieve Gullion, Newry, 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 8:18 AM. The temperature feels like 51 with a humidity level of 96 so dress accordingly. Cloud coverage is 87 percent with visibility at 6.2 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southeast at a speed of 18 MPH. At the end of the day don’t miss the sunset at 4:09 PM.