The highest day temperature in October 2025 was 88°F. The lowest night temperature was 63°F. The average values for day and night temperatures during October were 77.9°F и 70.3°F respectivly.

The average sea surface temperature in October 2025 for Rio das Ostras was 71.4°F. The maximum and minimum values were 68.4°F and 73.4°F respectively.

Most of the days in October are gloomy but you can also expect sunny days.

Precipitation total in October for Rio das Ostras is 1.9 in.

The average wind speed in October is 8.7 mph. It makes October one of the most windy months of the year for Rio das Ostras.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Rio das Ostras in October is 4.7 hours.