Sea temperature in Brazil
Live water temperatures and swimming conditions across 93 beaches on the Brazil coast.
Best time to swim in Brazil
The sea in Brazil peaks in January, when the water averages around 28°C.
The main swimming season runs from January – December, when surface temperatures stay comfortable for extended sessions.
On average, 12 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
The coldest month is typically July at around 24°C, when cold-water swimmers dominate the coast.
Brazil sits in the Southern Hemisphere, so the warmest sea coincides with the December–February summer and the coolest with July–August.
Brazil sea temperature history
Long-term climatology for Brazil shows an annual mean sea temperature of 26°C, ranging from 24°C in winter to 28°C at the summer peak.
The seasonal swing is roughly 4°C between the coldest and warmest month — a useful yardstick when comparing years or checking whether the current sea is running above or below average.
Recent decades have trended slightly warmer at Brazil, in line with regional sea-surface temperature records for the wider basin.
Monthly averages below are drawn from multi-decadal climatology and are updated as new observations arrive.
Values are area averages; individual beaches vary by exposure and depth.
Brazil sea temperature: frequently asked questions
What is the warmest month to swim in Brazil?
January is the warmest month in Brazil, when the sea averages about 28°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Brazil?
The coldest month in Brazil is typically July, when the water averages around 24°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Brazil without a wetsuit?
The main swimming season in Brazil runs from January – December — about 12 months a year when the sea sits above 20°C, the level most swimmers describe as pleasant without a wetsuit.
Do I need a wetsuit in Brazil?
Brazil stays warm year-round, so most swimmers never need a wetsuit — a rash guard is usually enough for sun and wildlife protection.
What is the average sea temperature in Brazil?
The long-term annual mean sea temperature in Brazil is about 26°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Brazil?
The live reading at the top of this page shows the current sea temperature in Brazil, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Coastal regions of Brazil
Region hubs with live sea temperatures, swim conditions and a beach directory.