São Mateus do Sul in Winter
In winter (June, July and August), São Mateus do Sul sees average daytime highs around 20°C and overnight lows near 10°C, with 280 mm of rain over about 25 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs climb from about 20°C in early June to 23°C by late August. The sky is clear or mostly clear about 38% of the time across winter, and the air most often feels dry.
Winter is São Mateus do Sul's best season of the year to visit on our travel score. For the whole year in context, see São Mateus do Sul's year-round climate.
- Avg daytime high
- 20°C
- coldest season of the year
- Avg overnight low
- 10°C
- Rainfall
- 280 mm
- 25 wet days
- Avg wind
- 9 km/h
- Travel score
- 6.6
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in São Mateus do Sul in Winter
Over the season highs climb from about 20°C in early June to 23°C by late August.
A typical winter day in São Mateus do Sul reaches about 20°C and drops to 10°C overnight. The warmest of the three months is August, the coolest July.
São Mateus do Sul weather by month
How the three winter months (June, July and August) 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 Winter
The sky is clear or mostly clear about 38% of the time across winter.
Chance of precipitation in Winter
São Mateus do Sul gets around 280 mm of rain over 25 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 9 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 30 min in early June to 11 h 24 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 3.3 kWh/m².
Is winter a good time to visit São Mateus do Sul?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit São Mateus do Sul for sightseeing.
What to pack for São Mateus do Sul in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, São Mateus do Sul sees daytime highs around 20°C and nights near 10°C. Worth packing: rain gear. About 25 days see rain.
UV index in São Mateus do Sul in Winter
Clear-sky midday UV across winter averages around 6 — enough to warrant sun protection. 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 Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter 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.