The highest day temperature in February 2026 was 96°F. The lowest night temperature was 73°F. The average values for day and night temperatures during February were 86.6°F и 77.4°F respectivly.

The average sea surface temperature in February 2026 for Niteroi was 85.9°F. The maximum and minimum values were 82.0°F and 90.0°F respectively.

You can expect various weather conditions during February. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in February for Niteroi is 2.5 in. It makes february the most rainy month of the year.

The average wind speed in February is 4.9 mph. This value is relatively stable throughout the year.

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 Niteroi in February is 6.5 hours.