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Niterói
Niterói · Rio de Janeiro Good time to visit Spring Shoulder season

Niterói in September

Short answer

In September, Niterói averages highs of 25 °C (77 °F) and lows of 19 °C (66 °F), with about 64 mm of rain spread over roughly 9 days. September has moderate rainfall, usually in quick showers that do not spoil the whole day. Crowds tend to be moderate this month.

Climate · INMET (updated 2026)
Most reviewed activity in NiteróiNiterói Tour★ 10 · 1 review · from US$ 89 · via CivitatisSee dates and price →
Temperature
25 / 19 °C
high / low
Rain
64 mm
9 days
Daylight
11h58
sunset at 17:46
Crowds
Moderate
1 public holiday

What to expect in Niterói in September

Myllena Vieira, editor at Visite
Editor's tip

September is spring in Niterói. In Brazil the seasons are the reverse of those in the Northern Hemisphere. Temperatures are pleasant, with highs of 25 °C (77 °F) and nights that still call for a light jacket. Crowds sit somewhere in the middle, with peaks on public holidays. Outside those dates, you can enjoy the place at an easy pace and spend less. Rain, when it comes, is usually brief and does not spoil the day.

Myllena Vieira · Editor at Visite
Crowds
Crowd level: moderate

Moderate crowds, with peaks on public holidays. Outside those dates, you can enjoy the place at a calmer pace.

Prices
Rates: moderate

Moderate prices outside public holidays, which push rates and crowds up.

Tours and tickets

Things to do in Niterói in September

booking on Civitatis
Niterói Tour
10· 1 review

Niterói Tour

Embark on a fascinating tour of Niterói, where you'll discover the town's most impressive attractions, steeped in history and captivating architecture.

5 h
from US$ 89
Book →
Niterói Paragliding Flight

Niterói Paragliding Flight

On this paragliding flight over Niterói, you’ll enjoy the best views of the Rio de Janeiro coastline while getting your adrenaline pumping. A unique experience!

1 h
from US$ 91
Book →
See all activities in Niterói
Where to stay

Hotels in Niterói

In September, demand in Niterói is moderate: most hotels have room, but public holidays fill them up. Compare rates and book a few weeks ahead.

See all hotels in Niterói

Rates change with the dates: confirm the price on Booking.com.

What happens in September

No major fixed festivals in September, but public holidays (Independence Day) bring more people to the destination.

Public holidays in September: Independence Day (07/09). Expect more people and higher prices around these dates.

What to pack in September

Light clothing for the day · highs of 25 °C (77 °F) Rain jacket or umbrella · 9 days of rain in the month Sunscreen and sunglasses · strong sun on the tours Comfortable walking shoes · you will be on foot much of the day
Looking for better weather?

Where the weather is good in September

These destinations have the best weather comfort for September, scored with the same calculation of rain, heat and humidity. Tap to see what the month is like in each one.

Diamantina 86
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Belo Horizonte 79
Belo Horizonte
Minas Gerais · see September →
Brumadinho 79
Brumadinho
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Mariana 79
Mariana
Minas Gerais · see September →
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Torn between Niterói and another destination?

See Niterói next to the destinations that usually compete for the same trip: month-by-month weather, driving cost, ideal length of stay and travel style, side by side.

Niterói or Arraial do Cabo? Niterói or Búzios? Niterói or Paraty?
see all comparisons →

Questions about Niterói in September

What is the weather like in Niterói in September?
In September, Niterói averages highs of 25 °C (77 °F) and lows of 19 °C (66 °F), with about 64 mm of rain spread over roughly 9 days. September has moderate rainfall, usually in quick showers that do not spoil the whole day. Crowds tend to be moderate this month.
Does it rain a lot in Niterói in September?
In September, Niterói gets about 64 mm of rain spread over around 9 rainy days, in line with the average rainfall for the year. Rain tends to come in quick showers that do not ruin the day.
Is September high season in Niterói?
Crowds in September tend to be moderate. Moderate prices outside public holidays, which push rates and crowds up.
What is happening in Niterói in September?
No major fixed festivals in September, but public holidays (Independence Day) bring more people to the destination.
Does it usually rain all day in Niterói in September?
INMET's climate normals record the number of rainy days and the total millimeters, not the hours of each day, so they do not say how long the rain lasts. What they show for Niterói in September: 9 rainy days in a month of 30 days (about 30% of the days) and 64 mm over the month, which works out to an average of about 7 mm per rainy day. Compared with the rest of the year, September falls within the destination's average rainfall. Rain tends to come in showers, but it is smart to have an indoor backup plan.
What is the temperature in Niterói in September, and what should you pack?
According to INMET's climate normals, the average high in Niterói in September is 25 °C and the average low is 19 °C, with air humidity of around 78%. Compared with the rest of the year, September is among the coolest months at the destination. For your suitcase, here is what those numbers call for: light clothing for the day; rain jacket or umbrella; sunscreen and sunglasses.
Is Niterói worth visiting in September?
Good time to visit. On our weather comfort index, which weighs rain, heat and humidity from INMET's climate normals, September scores 66 out of 100 and ranks No. 4 among the 12 months. The most comfortable month is July (74) and the least comfortable is January (40). As for crowds, in September they tend to be moderate.
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