Traveling to National Botanic Garden of Wales, Llanarthney, Wales, United Kingdom? Here is your 6-day weather forecast in the area. Whether it is a warm weather destinations or cold climate don’t forget to consider weather, while you pack your bags for this trip. Start your day when the sunrises at 7:49 AM and don’t miss the sunset at 4:13 PM. Today’s winds are traveling south at a speed of 26 MPH. The temperature feels like 45 with a humidity level of 92. Cloud coverage is 100 percent with 8.8 percent visibility. Today’s UV index is 1 make sure to prepare properly. Make sure to plan your travel itinerary to match your travel weather forecast to make the most of your vacation with Reservations.com.