Niterói in Fall
In fall (March, April and May), Niterói sees average daytime highs around 27°C and overnight lows near 23°C, with 274 mm of rain over about 37 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 30°C in early March to 25°C by late May. The sky is clear or mostly clear about 40% of the time across fall, and the air most often feels oppressive.
Fall is Niterói's 3rd-best season to visit on our travel score. For the whole year in context, see Niterói's year-round climate.
- Avg daytime high
- 27°C
- 2nd-warmest season
- Avg overnight low
- 23°C
- Rainfall
- 274 mm
- 37 wet days
- Avg wind
- 10 km/h
- Travel score
- 6.0
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Niterói in Fall
Over the season highs ease from about 30°C in early March to 25°C by late May.
A typical fall day in Niterói reaches about 27°C and drops to 23°C overnight. The warmest of the three months is March, the coolest May.
How fall really feels in Niterói
Once humidity and wind are folded in, fall brings about 21 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Niterói weather by month
How the three fall months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 30° / 24° | 145 | 15.2 | 13.2 | 4.6 |
| Feb | 30° / 25° | 93 | 11.9 | 12.8 | 4.7 |
| Mar | 29° / 24° | 127 | 15.3 | 12.2 | 4.9 |
| Apr | 28° / 23° | 77 | 11.4 | 11.5 | 6.2 |
| May | 26° / 21° | 70 | 10.7 | 10.9 | 6.8 |
| Jun | 25° / 20° | 41 | 6.7 | 10.6 | 7.6 |
| Jul | 25° / 19° | 45 | 7.7 | 10.7 | 7.6 |
| Aug | 25° / 19° | 36 | 7.2 | 11.2 | 7.6 |
| Sep | 26° / 20° | 66 | 10.2 | 11.9 | 6.9 |
| Oct | 26° / 21° | 80 | 10.6 | 12.5 | 6.4 |
| Nov | 27° / 22° | 122 | 14.8 | 13.1 | 5.7 |
| Dec | 28° / 24° | 133 | 15.1 | 13.4 | 5.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 40% of the time across fall.
Chance of precipitation in Fall
Niterói gets around 274 mm of rain over 37 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 10 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 30 min in early March to 10 h 42 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 4.4 kWh/m².
Is fall a good time to visit Niterói?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Niterói for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Niterói in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Niterói sees daytime highs around 27°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 37 days see rain.
Sea temperature near Niterói in Fall
The nearest coast averages about 25°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 27 km away) is warmest in March at about 25°C and coldest in August near 21°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 25 | 25 | 25 | 25 | 24 | 23 | 22 | 21 | 21 | 22 | 23 | 24 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 25 | Warm |
| Mar | 25 | Warm |
| Apr | 25 | Warm |
| May | 24 | Refreshing |
| Jun | 23 | Refreshing |
| Jul | 22 | Refreshing |
| Aug | 21 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 24 | Warm |
UV index in Niterói in Fall
Clear-sky midday UV across fall averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Niterói peaks around January 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 14 | 13 | 12 | 9 | 6 | 6 | 5 | 8 | 6 | 11 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | Very high | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 6 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Where is Niterói?
Niterói sits at 22.9°S, 43.1°W, 44 m above sea level, in Brazil. The nearest listed city is Rio de Janeiro, 8.0 km away.
Topography around Niterói
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Niterói.
Within 3 km, the terrain around Niterói has only modest variations in elevation — a maximum elevation change of 207 m around an average of 36 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 769 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.
The land around Niterói is covered by artificial surfaces (55%) and trees (26%) within 3 km, water (45%), trees (25%) and artificial surfaces (25%) within 16 km, and trees (38%) and water (34%) within 80 km.
Brazil travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / N
- 127 / 220 V · 60 Hz
- Prices
- ≈ 46% of US
- price level, 2025
- GDP per capita
- $10,713
- 2025
- Happiness
- 6.6 / 10
- World Happiness, 2025
- Safe drinking water
- 89%
- of population, 2024
- Homicide rate
- 19.3
- per 100k, 2023
- Road deaths
- 16
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 482
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Niterói (-22.8833°, -43.1036°, elevation 44 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.