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 11:19 PM. The temperature feels like 81.5 with a humidity level of 69 so dress accordingly. Cloud coverage is 23 percent with visibility at 14.9 percent. Today’s UV index is 7, don’t forget the sunscreen if you need it! Today’s winds are traveling east at a speed of 4 MPH. At the end of the day don’t miss the sunset at 10:33 AM.