the result is a spectacularly clear, calm, warm crystalline water along the oceanic beaches, with temperatures between 0 and 25 degrees celsius (68 and 77 degrees fahrenheit).

finally a reassuring note - tsunamis are not likely to occur in brazil, because are the result of major earthquakes due  to the collision of two tectonic plates moving toward each other, rio is spared from this risk being that the south-american tectonic plate in the atlantic ocean is moving away from the african tectonic plate.