The best times to visit Niteroi for ideal weather are
May 7th to October 14th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Niteroi Travel Guide
Other Niteroi Travel Info
Weather in Niteroi
Average temperatures in Niteroi vary little. Considering humidity, temperatures feel hot for about half of the year and otherwise nice with a very low chance of rain throughout the year. The area is more temperate than most — in the 65th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Niteroi, the hottest months are February, January, and then December. See average monthly temperatures below. The warmest time of year is generally early February where highs are regularly around 88.8°F (31.6°C) with temperatures rarely dropping below 75.3°F (24.1°C) at night.
Niteroi Temperatures (Fahrenheit)
Niteroi Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Niteroi Perceived Temperature (F)
Niteroi Perceived Temperature (C)
Average Niteroi Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Niteroi are August, January, and then October. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid January. For example, on the week of January 8th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid to late November with an average of 1 days of significant precipitation the week of November 19th.
When can you find snow in Niteroi? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Niteroi.
Snow on the Ground
The graph below shows the average snow on the ground in Niteroi (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Niteroi has some very humid months, and above average humidity throughout the year. The least humid month is February (70% relative humidity), and the most humid month is March (76.4%).
Wind in Niteroi is usually calm. The windiest month is October, followed by November and September. October’s average wind speed of around 7.1 knots (8.1 MPH or 13.1 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid October where average top sustained speeds reach 14.4 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Niteroi.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||6.2||Light breeze||12.8||Significant breeze|
|Feb||6.3||Light breeze||13.1||Significant breeze|
|Mar||6.2||Light breeze||12.7||Significant breeze|
|Apr||5.7||Light breeze||12.1||Significant breeze|
|May||5.4||Light breeze||10.7||Significant breeze|
|Jun||5.3||Light breeze||10.7||Gentle breeze|
|Jul||5.4||Light breeze||11.2||Significant breeze|
|Aug||6||Light breeze||12||Significant breeze|
|Sep||6.6||Light breeze||13.5||Significant breeze|
|Oct||7.1||Gentle breeze||14||Significant breeze|
|Nov||6.7||Light breeze||13.5||Significant breeze|
|Dec||6.6||Light breeze||13.6||Significant breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Niteroi?
Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for Brazil; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Oct 01, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Niteroi, Brazil is July, followed by January and June. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Niteroi in October. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Niteroi Travel Experience by Season
Fall (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 86.4°F (30.2°C) and 77.3°F (25.2°C) with colder temperatures in the later months. Rain is rare with roughly 1 days of significant precipitation per month. Fall is the second busiest for tourism, which makes it a good time for those looking for things to do.
Winter (June through August)
The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the least precipitation with 0 to 1 days of precipitation per month. June – August is the busiest season for tourism in Niteroi, so lodging and other accommodations may cost more than usual.
Spring (September through November)
Spring daily highs range from 82.9°F (28.3°C) and 78.8°F (26°C), which will feel very nice given the humidity and wind. It rains or snows a normal amount: 1 to 3 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.
Summer (December through February)
Weather is perfect this time of year in Niteroi to be enjoyable for warm weather travelers. The average high during this season is between 88.8°F (31.6°C) and 83.8°F (28.8°C). On average, it rains or snows a smalll amount: 0 to 2 times per month. These times of year are fairly slow with tourists.