Brazil: where to swim in October?
Brazil, in October: the sea is at 24.8 °C on average along the coast, from 19.6 °C to 28.6 °C depending on the spot. Where the water is warmest (28.6 °C), it is very warm. Almost lukewarm: you can get in without any cold shock.
Sea temperature, month by month
| Month | Average temperature | Depending on the spot | Where it is warmest |
|---|---|---|---|
| January | 27.1 °C | 24.8 °C – 28.4 °C | very warm |
| February | 27.2 °C | 24.9 °C – 28.4 °C | very warm |
| March | 27.3 °C | 24.8 °C – 28.6 °C | very warm |
| April | 27.1 °C | 23.3 °C – 28.9 °C | very warm |
| May | 26.0 °C | 21.0 °C – 28.8 °C | very warm |
| June | 25.0 °C | 18.3 °C – 28.9 °C | very warm |
| July | 24.2 °C | 16.7 °C – 28.7 °C | very warm |
| August | 23.9 °C | 16.2 °C – 28.7 °C | very warm |
| September | 24.2 °C | 17.6 °C – 28.8 °C | very warm |
| October | 24.8 °C | 19.6 °C – 28.6 °C | very warm |
| November | 25.7 °C | 21.6 °C – 28.8 °C | very warm |
| December | 26.4 °C | 23.3 °C – 28.6 °C | very warm |
Compared with September, the water warms up by 0.6 °C in October. The warmest month: March (27.3 °C). The coldest: August (23.9 °C).
Nearby, in October
- United States Virgin Islands 29.2 °C · very warm
- Puerto Rico 29.3 °C · very warm
- Mexico 27.8 °C · very warm
- Portugal 19.6 °C · pleasant
- United States 21.2 °C · very warm
- Ireland 13.7 °C · cold
- France 18.0 °C · pleasant
- United Kingdom 12.9 °C · cool
- Netherlands 15.2 °C · cool
And right now?
At sea, 25.3 °C on average across 2 stations, from 23.8 °C (Arraial do Cabo - Prainha da Ilha (Brazil)) to 26.8 °C (Fernando de Noronha Archipelago - Baía dos Golfinhos (Brazil)). In fresh water, 29.0 °C on average across 1 stations, from 29.0 °C (Hato Marina Kralendijk) to 29.0 °C (Hato Marina Kralendijk). Brazil: water temperature
Frequently asked questions
What is the sea temperature in October?
Brazil, in October: 24.8 °C on average along the coast, from 19.6 °C in the coolest waters to 28.6 °C in the warmest (average of the years 2011 to 2025).
Can you swim in October?
Where the water is warmest (28.6 °C), it is very warm. Almost lukewarm: you can get in without any cold shock.
What is the best month for swimming?
The water is warmest in March (27.3 °C on average) and coldest in August (23.9 °C). Where the water is warmest, it goes above 20 °C in these months: January, February, March, April, May, June, July, August, September, October, November, December.
Where is the water warmest in October?
The warmest in October: United States Virgin Islands (29.2 °C), Puerto Rico (29.3 °C), Mexico (27.8 °C). The coolest: Netherlands (15.2 °C).
Where do these temperatures come from?
These are averages of the sea surface temperature from 2011 to 2025, computed from NOAA satellite images (OISST, one value about every 50 km), in a 100 km strip along the coasts of the main country: distant territories (overseas, remote islands) are not counted. It is an estimate, not a measurement taken at the beach: lakes and rivers are not included.