Portão in Fall
In fall (March, April and May), Portão sees average daytime highs around 25°C and overnight lows near 16°C, with 366 mm of rain over about 33 wet days across the season. It is the 2nd-warmest season and the driest season of the year.
Over the season highs ease from about 29°C in early March to 20°C by late May. The sky is clear or mostly clear about 33% of the time across fall, and the air most often feels humid.
Fall is Portão's best season of the year to visit on our travel score. For the whole year in context, see Portão's year-round climate.
- Avg daytime high
- 25°C
- 2nd-warmest season
- Avg overnight low
- 16°C
- Rainfall
- 366 mm
- 33 wet days
- Avg wind
- 8 km/h
- Travel score
- 6.4
- best season of the year
- Months
- Mar · Apr · May
Temperature in Portão in Fall
Over the season highs ease from about 29°C in early March to 20°C by late May.
A typical fall day in Portão reaches about 25°C and drops to 16°C overnight. The warmest of the three months is March, the coolest May.
Portão 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° / 20° | 165 | 14.8 | 13.7 | 4.6 |
| Feb | 29° / 20° | 141 | 13.9 | 13.1 | 4.7 |
| Mar | 28° / 19° | 128 | 12.9 | 12.2 | 5.7 |
| Apr | 25° / 16° | 118 | 10 | 11.3 | 6.8 |
| May | 22° / 13° | 120 | 9.9 | 10.5 | 6.6 |
| Jun | 20° / 11° | 124 | 10.2 | 10.1 | 6.1 |
| Jul | 19° / 10° | 155 | 10.5 | 10.3 | 6.1 |
| Aug | 21° / 11° | 130 | 10.5 | 10.9 | 6.5 |
| Sep | 22° / 13° | 160 | 12 | 11.8 | 6.3 |
| Oct | 24° / 15° | 194 | 13.8 | 12.7 | 6.2 |
| Nov | 27° / 17° | 139 | 12.1 | 13.5 | 6.2 |
| Dec | 29° / 19° | 145 | 13.1 | 13.9 | 5.2 |
Cloud cover in Fall
The sky is clear or mostly clear about 33% of the time across fall.
Chance of precipitation in Fall
Portão gets around 366 mm of rain over 33 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 8 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 42 min in early March to 10 h 18 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 3.8 kWh/m².
Is fall a good time to visit Portão?
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 Portão for sightseeing.
What to pack for Portão in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Portão sees daytime highs around 25°C and nights near 16°C. Pack light clothes. Worth having: rain gear and sun protection. About 33 days see rain.
UV index in Portão in Fall
Clear-sky midday UV across fall averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Portão peaks around January 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 4 (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) | 13 | 12 | 10 | 8 | 5 | 4 | 4 | 5 | 8 | 8 | 12 | 13 |
| Level | Extreme | Extreme | Very high | Very high | Moderate | Moderate | Moderate | High | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 8 | Very high |
| May | 5 | Moderate |
| Jun | 4 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | High |
| Sep | 8 | Very high |
| Oct | 8 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Air quality in Portão 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 Portão is worst in August — around 27 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 13 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) | 13 | 13 | 15 | 18 | 21 | 23 | 25 | 27 | 23 | 16 | 15 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 13 | Moderate |
| Mar | 15 | Moderate |
| Apr | 18 | Moderate |
| May | 21 | Moderate |
| Jun | 23 | Moderate |
| Jul | 25 | Moderate |
| Aug | 27 | Moderate |
| Sep | 23 | Moderate |
| Oct | 16 | Moderate |
| Nov | 15 | Moderate |
| Dec | 13 | Moderate |
Where is Portão?
Portão sits at 29.7°S, 51.2°W, 49 m above sea level, in Brazil. The nearest listed city is Estância Velha, 9.0 km away.
Topography around Portão
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Portão.
Within 3 km, the terrain around Portão has only modest variations in elevation — a maximum elevation change of 120 m around an average of 47 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 449 m; within 80 km, large variations in elevation — a maximum elevation change of 986 m.
The land around Portão is covered by trees (42%) and grassland (34%) within 3 km, trees (52%) and grassland (25%) within 16 km, and trees (57%) and grassland (22%) 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 Portão (-29.7017°, -51.2419°, elevation 49 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.