The highest day temperature in January 2025 was 93°F. The lowest night temperature was 72°F. The average values for day and night temperatures during January were 84.3°F и 76.1°F respectivly.

The average sea surface temperature in January 2025 for Rio das Ostras was 81.0°F. The maximum and minimum values were 78.8°F and 84.6°F respectively.

Most of the days in January are cloudy but you can also expect sunny or gloomy days.

Precipitation total in January for Rio das Ostras is 2.6 in. It makes january one of the most rainy months of the year.

The average wind speed in January is 7.6 mph.

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 January is 6.3 hours.