Rio 2016 Olympics Weather Outlook

  • Model output showing the expected weekly rainfall anomalies from 1st - 7th August. Below average rainfall is expected across swathes of Brazil, including around the Rio de Janeiro area. Source: Prescient Weather via

    Expected maximum temperatures for Rio de Janeiro over the next couple of weeks. The yellow line indicates the model ensemble average. Image: MeteoGroup

    Rio de Janeiro on a sunny day. Photo: Mauro Pimentel/PA Wire.

    A view of the swimming pool at the Minas Tennis Country Club in Belo Horizonte, Brazil where the Team GB marathon swimmers will train. Photo: Owen Humphreys / PA Wire/Press Association Images

  • Rio 2016 Olympics Weather Outlook
    28.07.2016 15:53


    It’s now just a week to go until the 2016 Olympic Games kick off in Rio de Janeiro. It will be the first time that a South American nation has hosted Olympics since the modern games began in 1896, and only the third time they have been held in the Southern Hemisphere. The torch relay is now entering its final stages around Rio de Janeiro State ahead of the opening ceremony on Friday 5th August, and athletes and ticket holders will soon be travelling in from around the world. So what does the weather have in store for the run-up to Games, and how will conditions compare to the average?

    August is a winter month in the Southern Hemisphere, but being situated within the tropics temperatures in Rio rarely fall especially low. Instead, the winter months see the heat and humidity fall to somewhat more comfortable levels with daytime high temperatures averaging 26C. Even in the winter though, winds from the interior can still cause temperatures to soar to 35C, with such conditions likely to cause some discomfort to the competitors especially. Winter is also a drier time of year as shower and thunderstorm activity tapers off, although cold fronts associated with low pressure systems to the south can still bring periods of rain and sharp changes in temperature. August rainfall averages 45mm, close to the average monthly rainfall for London.

    After reaching a steamy 33C on Wednesday, a cold front brought cloudier and cooler conditions to the city on Thursday with temperatures dropping by 10C. The next few days will see increasing amounts of fine and sunny weather though as the sub-tropical high pressure system ridges back in, and temperatures should return to near or slightly above the seasonal average. Latest models suggest the first week of August is likely to be slightly drier and warmer than average due to the continued high pressure influence, with the greatest chance of any rain on Tuesday night as a front moves through. Although daily details are tricky to pin down over a week ahead, early indications for the Opening Ceremony and first weekend of events are for largely dry and fine conditions with daytime highs in the upper twenties.

    If you’re travelling out to Rio for the Olympics over the coming week, make sure you keep up with the latest info at


    By: Billy Payne