Arraial do Cabo Water Temperature

(Today) 2025

21.1°C / 70°F

The water will feel tepid. Swimming will be tolerable without a wetsuit, although it will take a little getting used to. If you intend to stay in the water for a while a 3/2mm wetsuit will be ideal.

Current weather

17°C / 63°F
(few clouds)
Partly cloudy
Wind
6 mph
Humidity
88%

The measurements for the water temperature in Arraial do Cabo, Rio de Janeiro are provided by the daily satellite readings provided by the NOAA. The temperatures given are the sea surface temperature (SST) which is most relevant to recreational users.

*Live data may vary from satellite readings for a number of reasons. These include local factors, depth of smapling and time of day.

Water temp by month

Monthly average max / min water temperatures

The graph below shows the range of monthly Arraial do Cabo water temperature derived from many years of historical sea surface temperature data.

Arraial do Cabo average maximum / minimum water temperatures
Maximum and minimum monthly sea temperatures in Arraial do Cabo
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 23.5 23 24 24 22.8 21.8 20.9 21 20.2 19.9 20.5 21.8
Max °C 26.3 27.2 27.4 26.6 26.1 25.1 23.6 23.6 23 25.3 25.7 26.2
Min °F 75.4 75.1 76.6 76.2 74.3 72.5 70.7 70.8 69.5 70 71 73
Max °F 78.2 79.3 80 78.8 77.6 75.8 73.4 73.4 72.3 75.4 76.2 77.4

The warmest water temperature is in March with an average around 78.3°F / 25.7°C. The coldest month is September with an average water temperature of 70.9°F / 21.6°C.

7 day tide forecast for Arraial do Cabo

SatSunMonTueWedThuFri
  • Low 5:26am
    (0.35m)
  • High 10:37am
    (0.8m)
  • Low 5:57pm
    (0.4m)
  • High 10:43pm
    (0.76m)
  • Low 6:06am
    (0.26m)
  • High 11:39am
    (0.84m)
  • Low 6:42pm
    (0.37m)
  • High 11:34pm
    (0.79m)
  • Low 6:48am
    (0.19m)
  • High 12:24pm
    (0.88m)
  • Low 7:38pm
    (0.34m)
  • High 12:17am
    (0.83m)
  • Low 7:42am
    (0.13m)
  • High 1:19pm
    (0.94m)
  • Low 8:33pm
    (0.3m)
  • High 1:05am
    (0.87m)
  • Low 8:34am
    (0.08m)
  • High 2:23pm
    (1.01m)
  • Low 9:12pm
    (0.28m)
  • High 2:03am
    (0.93m)
  • Low 9:12am
    (0.04m)
  • High 3:06pm
    (1.09m)
  • Low 9:44pm
    (0.3m)
  • High 2:50am
    (1.01m)
  • Low 9:45am
    (0.03m)
  • High 3:40pm
    (1.14m)
  • Low 10:14pm
    (0.35m)
7 day tide times for Arraial do Cabo

*These tide times are estimates based on the nearest accurate location (Cabo Frio, Brazil) and may differ by up to half an hour depending on distance. Please note, the tide times given are not suitable for navigational purposes.