If you planning to travel to Guaiba Lake (River), State Of Rio Grande Do Sul (RS), South America, 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 8:31 AM. The temperature feels like 74.95 with a humidity level of 72 so dress accordingly. Cloud coverage is 0 percent with visibility at 14.9 percent. Today’s UV index is 12, don’t forget the sunscreen if you need it! Today’s winds are traveling east-southeast at a speed of 11 MPH. At the end of the day don’t miss the sunset at 10:25 PM.