If you planning to travel to Portstewart Strand, Portstewart, 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 8:50 AM. The temperature feels like 42.6 with a humidity level of 88 so dress accordingly. Cloud coverage is 66 percent with visibility at 14.3 percent. Today’s UV index is 1, 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 4:06 PM.