Praia Vermelha Rio Sea Temperature & Swim Forecast
Sheltered red-sand cove beneath Sugarloaf.
Mild water with a light chop and a light breeze — comfortable conditions for most swimmers.
Location
Praia Vermelha Rio on the map, with nearby beaches and live sea temperatures.
7-day forecast
Water, air, waves, wind and UV outlook for the week ahead.
Shorty 2mm
At 19.7°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.
Recommendation tuned for Praia Vermelha Rio's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
Can I swim at Praia Vermelha Rio today?
The sea is currently 19.7°C — good swimming conditions. Most swimmers will find it pleasant.
- • Located in Rio de Janeiro, Brazil (Atlantic Ocean).
- • Family friendly with calm, accessible water.
- • Live data refreshed hourly from Open-Meteo Marine.
Monthly sea temperature averages
Tap any month to see what to expect — based on regional climatology.
Best time to swim in Praia Vermelha Rio
The sea in Praia Vermelha Rio peaks in August, when the water averages around 21°C.
The main swimming season runs from July – September, when surface temperatures stay comfortable for extended sessions.
On average, 3 months a year sit above 20°C — the threshold most swimmers describe as pleasant without a wetsuit.
Shoulder months like June and October are noticeably cooler but often quieter, with fewer crowds and steadier weather.
Outside peak season the water drops toward 14°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable.
The coldest month is typically January at around 14°C, when cold-water swimmers dominate the coast.
Praia Vermelha Rio sea temperature history
Long-term climatology for Praia Vermelha Rio shows an annual mean sea temperature of 17°C, ranging from 14°C in winter to 21°C at the summer peak.
The seasonal swing is roughly 7°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 Praia Vermelha Rio, 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.
Praia Vermelha Rio sea temperature: frequently asked questions
What is the warmest month to swim in Praia Vermelha Rio?
August is the warmest month in Praia Vermelha Rio, when the sea averages about 21°C. Late-season warmth often persists a few weeks after peak.
When is the sea coldest in Praia Vermelha Rio?
The coldest month in Praia Vermelha Rio is typically January, when the water averages around 14°C. Cold-water swimmers and surfers dominate this period.
When can you swim in Praia Vermelha Rio without a wetsuit?
The main swimming season in Praia Vermelha Rio runs from July – September — about 3 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 Praia Vermelha Rio?
Outside peak summer the water in Praia Vermelha Rio drops toward 14°C, so a 3/2mm shorty or full wetsuit makes long swims much more comfortable. In peak months most swimmers go without.
What is the average sea temperature in Praia Vermelha Rio?
The long-term annual mean sea temperature in Praia Vermelha Rio is about 17°C, based on multi-decadal climatology of the surrounding waters.
How do I check the current sea temperature in Praia Vermelha Rio?
The live reading at the top of this page shows the current sea temperature in Praia Vermelha Rio, updated hourly from marine buoy and satellite data. The 7-day forecast covers water, air, waves, wind and UV for the week ahead.
Year-round sea temperature
Best swim months: Jul – Aug – Sep
| Month | Sea | Comfort |
|---|---|---|
| Jan | 14°C | Bracing |
| Feb | 14°C | Bracing |
| Mar | 14°C | Bracing |
| Apr | 15°C | Bracing |
| May | 16°C | Bracing |
| Jun | 18°C | Pleasant |
| Jul | 20°C | Pleasant |
| Aug ⭐ | 21°C | Pleasant |
| Sep | 21°C | Pleasant |
| Oct | 19°C | Pleasant |
| Nov | 17°C | Bracing |
| Dec | 15°C | Bracing |
Nearby beaches
The closest coastline, with live water temperatures.