If you planning to travel to That Dam, Vientiane, Laos, 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 11:37 PM. The temperature feels like 72.5 with a humidity level of 68 so dress accordingly. Cloud coverage is 7 percent with visibility at 14.9 percent. Today’s UV index is 6, don’t forget the sunscreen if you need it! Today’s winds are traveling southeast at a speed of 3 MPH. At the end of the day don’t miss the sunset at 10:43 AM.