Fonte Boa in Fall
In fall (March, April and May), Fonte Boa sees average daytime highs around 30°C and overnight lows near 24°C, with 1010 mm of rain over about 86 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Across fall, daytime highs hold fairly steady around 30°C. The sky is clear or mostly clear about 1% of the time across fall, and the air most often feels miserable.
Fall is Fonte Boa's 3rd-best season to visit on our travel score. Fonte Boa has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Fonte Boa's year-round climate.
- Avg daytime high
- 30°C
- 3rd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 1010 mm
- 86 wet days
- Avg wind
- 5 km/h
- Travel score
- 2.7
- 3rd-best season
- Months
- Mar · Apr · May
Temperature in Fonte Boa in Fall
Across fall, daytime highs hold fairly steady around 30°C.
A typical fall day in Fonte Boa reaches about 30°C and drops to 24°C overnight. The warmest of the three months is March, the coolest May.
How fall really feels in Fonte Boa
Once humidity and wind are folded in, fall brings about 92 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.
Fonte Boa 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° | 273 | 26.8 | 12.1 | 2.8 |
| Feb | 30° / 24° | 269 | 23.8 | 12.1 | 2.8 |
| Mar | 30° / 24° | 316 | 28.4 | 12 | 2.7 |
| Apr | 30° / 24° | 342 | 27.8 | 11.9 | 2.7 |
| May | 30° / 24° | 352 | 29.4 | 11.9 | 2.8 |
| Jun | 29° / 23° | 239 | 27.2 | 11.9 | 3.1 |
| Jul | 30° / 23° | 168 | 25.3 | 11.9 | 3.4 |
| Aug | 31° / 23° | 136 | 23.3 | 11.9 | 3.3 |
| Sep | 31° / 24° | 151 | 23.4 | 12 | 3.0 |
| Oct | 31° / 24° | 175 | 24.7 | 12.1 | 2.8 |
| Nov | 31° / 24° | 205 | 25.5 | 12.1 | 2.7 |
| Dec | 31° / 24° | 264 | 28.5 | 12.1 | 2.6 |
Cloud cover in Fall
The sky is clear or mostly clear about 1% of the time across fall.
Chance of precipitation in Fall
Fonte Boa gets around 1010 mm of rain over 86 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 5 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 06 min in early March to 11 h 54 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 4.1 kWh/m².
Is fall a good time to visit Fonte Boa?
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 weaker month for outdoor sightseeing in Fonte Boa.
What to pack for Fonte Boa in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Fonte Boa sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 86 days see rain.
UV index in Fonte Boa in Fall
Clear-sky midday UV across fall averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Fonte Boa peaks around January 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 10 (extreme).
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 | 14 | 14 | 14 | 12 | 11 | 10 | 11 | 11 | 12 | 12 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 12 | Extreme |
| Nov | 12 | Extreme |
| Dec | 12 | Extreme |
Air quality in Fonte Boa in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in Fonte Boa is worst in March — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (June, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 16 | 17 | 15 | 10 | 10 | 11 | 17 | 16 | 14 | 14 | 14 |
| Level | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 16 | Moderate |
| Mar | 17 | Moderate |
| Apr | 15 | Moderate |
| May | 10 | Good |
| Jun | 10 | Good |
| Jul | 11 | Good |
| Aug | 17 | Moderate |
| Sep | 16 | Moderate |
| Oct | 14 | Moderate |
| Nov | 14 | Moderate |
| Dec | 14 | Moderate |
Where is Fonte Boa?
Fonte Boa sits at 2.5°S, 66.1°W, 60 m above sea level, in Brazil. The nearest listed city is Maraã, 93 km away.
Topography around Fonte Boa
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Fonte Boa.
Within 3 km, the terrain around Fonte Boa has only modest variations in elevation — a maximum elevation change of 46 m around an average of 52 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 53 m; within 80 km, only modest variations in elevation — a maximum elevation change of 60 m.
The land around Fonte Boa is covered by trees (51%), grassland (22%) and water (22%) within 3 km, trees (83%) within 16 km, and trees (94%) 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 Fonte Boa (-2.5139°, -66.0917°, elevation 60 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.