If you planning to travel to Guanabara Bay, Brazil, 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 8:00 AM. The temperature feels like 80.3 with a humidity level of 75 so dress accordingly. Cloud coverage is 53 percent with visibility at 14 percent. Today’s UV index is 12, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southwest at a speed of 6 MPH. At the end of the day don’t miss the sunset at 9:32 PM.