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Hourly Forecast
Daylight Hours
05:59
Sunrise
17:40
Sunset
Moon
Waning Crescent
03:16
Moonrise
14:16
Moonset
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Weather in Niterói today, September 07, 2026
Niterói looks damp on September 07, 2026, so plan for wet spells during the day. Early travel and outdoor time should assume rain can arrive quickly. Morning plans should assume damp conditions, as rain chances climb toward 28% around 10:00. Cloud cover is also at its densest near 08:00 at roughly 98%.
Temperatures climb from an overnight low near 18°C toward a daytime high of about 19°C. The air stays humid, with relative humidity between 67% and 84% and the peak around 23:00. Airflow remains manageable, reaching about 2.4 km/h around 15:00.
The second half of the day still looks unsettled, with rain probability around 68% by 19:00. Dense cloud near 98% at 12:00 keeps the feel grey. Visibility stays generally good near 13.0 km on average, though it can drop toward 3.6 km in thicker cloud or showers. The sun rises at 05:59 and sets at 17:40, for a total of 11 hours 41 minutes of sunlight today.
Taken together, Niterói looks wet enough on September 07, 2026 that flexible outdoor plans work best, with temperatures peaking near 19°C.
Frequently asked questions about weather in Niterói
How warm does it get in Niterói?
The warmest month in Niterói is February, with average high temperatures of 31°C. The average temperature during this period is around 27°C.
How cold does it get in Niterói?
The coldest month in Niterói is February, with average low temperatures of 24°C. The average temperature during this period is around 27°C.
What is the wettest time of year in Niterói?
The wettest month in Niterói is October, with an average of 33mm of precipitation.
What is the driest time of year in Niterói?
The driest month in Niterói is December, with an average of 13mm of precipitation.
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