São Mateus do Sul in Fall
In fall (March, April and May), São Mateus do Sul sees average daytime highs around 24°C and overnight lows near 14°C, with 289 mm of rain over about 33 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 27°C in early March to 20°C by late May. The sky is clear or mostly clear about 20% of the time across fall, and the air most often feels humid.
Fall is São Mateus do Sul's 2nd-best season to visit on our travel score. For the whole year in context, see São Mateus do Sul's year-round climate.
- Avg daytime high
- 24°C
- 3rd-warmest season
- Avg overnight low
- 14°C
- Rainfall
- 289 mm
- 33 wet days
- Avg wind
- 8 km/h
- Travel score
- 6.4
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in São Mateus do Sul in Fall
Over the season highs ease from about 27°C in early March to 20°C by late May.
A typical fall day in São Mateus do Sul reaches about 24°C and drops to 14°C overnight. The warmest of the three months is March, the coolest May.
São Mateus do Sul 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 | 27° / 18° | 184 | 21.2 | 13.4 | 4.7 |
| Feb | 27° / 18° | 157 | 19.1 | 12.9 | 4.8 |
| Mar | 26° / 17° | 108 | 14.5 | 12.2 | 5.8 |
| Apr | 24° / 15° | 76 | 9.3 | 11.4 | 6.8 |
| May | 21° / 12° | 105 | 9.2 | 10.8 | 6.5 |
| Jun | 20° / 10° | 109 | 9.1 | 10.4 | 6.3 |
| Jul | 20° / 9° | 85 | 8.3 | 10.5 | 6.5 |
| Aug | 22° / 10° | 85 | 7.7 | 11.1 | 7.1 |
| Sep | 23° / 12° | 140 | 11 | 11.8 | 6.5 |
| Oct | 24° / 14° | 150 | 15.2 | 12.6 | 5.9 |
| Nov | 25° / 16° | 123 | 14 | 13.3 | 6.0 |
| Dec | 27° / 17° | 144 | 17.2 | 13.6 | 5.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 20% of the time across fall.
Chance of precipitation in Fall
São Mateus do Sul gets around 289 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 36 min in early March to 10 h 30 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 3.9 kWh/m².
Is fall a good time to visit São Mateus do Sul?
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 São Mateus do Sul for sightseeing.
What to pack for São Mateus do Sul in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, São Mateus do Sul sees daytime highs around 24°C and nights near 14°C. Pack rain gear. Worth having: light clothes and sun protection. About 33 days see rain.
UV index in São Mateus do Sul 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 São Mateus do Sul peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).
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) | 15 | 14 | 12 | 9 | 6 | 5 | 5 | 6 | 8 | 11 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 14 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 6 | High |
| Jun | 5 | High |
| Jul | 5 | High |
| Aug | 6 | High |
| Sep | 8 | Very high |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in São Mateus do Sul 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 São Mateus do Sul is worst in September — around 16 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 7 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) | 7 | 7 | 7 | 8 | 9 | 8 | 10 | 13 | 16 | 10 | 8 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 7 | Good |
| Mar | 7 | Good |
| Apr | 8 | Good |
| May | 9 | Good |
| Jun | 8 | Good |
| Jul | 10 | Good |
| Aug | 13 | Moderate |
| Sep | 16 | Moderate |
| Oct | 10 | Good |
| Nov | 8 | Good |
| Dec | 7 | Good |
Where is São Mateus do Sul?
São Mateus do Sul sits at 25.9°S, 50.4°W, 792 m above sea level, in Brazil. The nearest listed city is Três Barras, 27 km away.
Topography around São Mateus do Sul
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Mateus do Sul.
Within 3 km, the terrain around São Mateus do Sul has only modest variations in elevation — a maximum elevation change of 80 m around an average of 775 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 159 m; within 80 km, large variations in elevation — a maximum elevation change of 879 m.
The land around São Mateus do Sul is covered by trees (40%), grassland (22%) and artificial surfaces (20%) within 3 km, trees (56%) and cropland (32%) within 16 km, and trees (60%) and cropland (33%) 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 São Mateus do Sul (-25.8742°, -50.3828°, elevation 792 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.