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Niterói weather

Rio de Janeiro · 515,317 inhabitants · Thursday, October 29 · updated 18:25

Raining now Air: Moderate Moderate storm risk · Mon, Wed, Thu

21°

Light rain

Feels like 29°C

Wind

5 km/h

Gusts

9 km/h

Humidity

96 %

Pressure

1015 hPa

Clouds

100 %

Storm

Rise 05:08 Set 18:03 Day 12 h 54 min UV 4 · Moderate

Morning, afternoon, evening

Trend

Evening

Rain

22°21°

Feels like 31°

Wind ↑ ENE 9 km/h

Gusts 17 km/h

Humidity 91 %

💧 8.3 mm

18:00

21°

3.2mm

ESE 5

Niterói forecast in charts · next 7 days

The week ahead: highs and lows

≈ A week close to the usual temperatures

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

Niterói climate: what a normal year looks like

The hottest stretch is February, when afternoons average 31 °C; the coldest is July, when nights average 17 °C.

Afternoons reach 30 °C or more from December to March; the typical peak is 31 °C in February.

A normal year brings roughly 1,680 mm of rain — more than 81% of the towns of 20,000+ people we compared it with.

Forecast highs for the coming week average 26 °C, 2 °C cooler than a normal October (28 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
Jan	31 °C	23 °C	259 mm
Feb	31 °C	23 °C	195 mm
Mar	31 °C	23 °C	216 mm
Apr	29 °C	21 °C	110 mm
May	27 °C	19 °C	81 mm
Jun	26 °C	17 °C	51 mm
Jul	25 °C	17 °C	52 mm
Aug	26 °C	17 °C	48 mm
Sep	27 °C	19 °C	91 mm
Oct	28 °C	20 °C	123 mm
Nov	29 °C	21 °C	214 mm
Dec	30 °C	23 °C	239 mm
Whole year	28 °C	20 °C	1,680 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 22.88° S, 43.10° W, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in Niterói: pollution and pollen

3/6

Moderate

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.523µg/m³

PM1026µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Niterói

Rain observed over the last two hours by official weather radars around Niterói, followed by the radar forecast for the next hour where the weather service provides one.

Full-screen rain radar and next-hour rain on RainAtlas

Rain radar Last two hours, then forecast where available · drag the timeline

No open weather radar covers Niterói yet: the map shows our hour-by-hour rain forecast (ICON, GFS).

Moon over Niterói

Waning gibbous

87 % illuminated · 18.3 days

Rise 15:52 Set 01:41

Fri 30/10 79%

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Moonrise and moonset in local time (America/Sao_Paulo); phase and lit fraction from a synodic calculation.

Look up a past day in Niterói

Curious about the weather in Niterói on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Niterói weather at a glance

This page gathers everything about the weather in Niterói, Rio de Janeiro: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “light rain”, it is 21 °C (feels like 29 °C) and the wind blows at 5 km/h.

Expected range today: 21 °C to 24 °C and around 5 mm of rain; keep an eye on thunderstorms. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Rio de Janeiro 8 km 20°

Duque de Caxias 24 km 24°

São João de Meriti 29 km 24°

Barra Da Tijuca 30 km 20°

Belford Roxo 33 km 24°

Nova Iguaçu 38 km 21°

Juiz de Fora 127 km 23°

Campos Dos Goytacazes 222 km 22°

Niterói weather data for developers

Use the Niterói forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

Create a free key

Where does this forecast come from? Our engine, checked every day against 1125 weather stations