Dois Irmãos in Summer
In summer (December, January and February), Dois Irmãos sees average daytime highs around 28°C and overnight lows near 18°C, with 567 mm of rain over about 50 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 28°C. The sky is clear or mostly clear about 29% of the time across summer, and the air most often feels muggy.
Summer is Dois Irmãos's weakest season of the year to visit on our travel score. For the whole year in context, see Dois Irmãos's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 18°C
- Rainfall
- 567 mm
- 50 wet days
- Avg wind
- 7 km/h
- Travel score
- 5.4
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Dois Irmãos in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Dois Irmãos reaches about 28°C and drops to 18°C overnight. The warmest of the three months is January, the coolest December.
Dois Irmãos weather by month
How the three summer months (December, January and February) 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 | 28° / 18° | 210 | 18.1 | 13.7 | 5.2 |
| Feb | 28° / 18° | 179 | 17.1 | 13.1 | 5.2 |
| Mar | 26° / 17° | 160 | 15.2 | 12.2 | 5.9 |
| Apr | 24° / 15° | 133 | 11.6 | 11.3 | 6.6 |
| May | 20° / 11° | 138 | 11 | 10.5 | 6.2 |
| Jun | 19° / 10° | 134 | 11 | 10.1 | 5.9 |
| Jul | 18° / 9° | 171 | 11.3 | 10.3 | 5.9 |
| Aug | 20° / 10° | 142 | 11 | 10.9 | 6.3 |
| Sep | 21° / 12° | 177 | 12.9 | 11.8 | 6.0 |
| Oct | 23° / 14° | 217 | 15.2 | 12.7 | 6.0 |
| Nov | 25° / 15° | 158 | 13.7 | 13.5 | 6.2 |
| Dec | 27° / 17° | 178 | 15.2 | 13.9 | 5.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 29% of the time across summer.
Chance of precipitation in Summer
Dois Irmãos gets around 567 mm of rain over 50 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 48 min in early December to 12 h 42 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.0 kWh/m².
Is summer a good time to visit Dois Irmãos?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Dois Irmãos for sightseeing.
What to pack for Dois Irmãos in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Dois Irmãos sees daytime highs around 28°C and nights near 18°C. Pack light clothes, rain gear and sun protection. About 50 days see rain.
UV index in Dois Irmãos in Summer
Clear-sky midday UV across summer 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 Dois Irmãos 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 Dois Irmãos in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Dois Irmãos is worst in August — around 22 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (February, 9 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) | 10 | 9 | 10 | 11 | 12 | 12 | 15 | 22 | 18 | 12 | 11 | 10 |
| Level | Good | Good | Good | Good | Moderate | Good | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 9 | Good |
| Mar | 10 | Good |
| Apr | 11 | Good |
| May | 12 | Moderate |
| Jun | 12 | Good |
| Jul | 15 | Moderate |
| Aug | 22 | Moderate |
| Sep | 18 | Moderate |
| Oct | 12 | Good |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is Dois Irmãos?
Dois Irmãos sits at 29.6°S, 51.1°W, 181 m above sea level, in Brazil. The nearest listed city is Ivoti, 7.0 km away.
Topography around Dois Irmãos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Dois Irmãos.
Within 3 km, the terrain around Dois Irmãos has significant variations in elevation — a maximum elevation change of 392 m around an average of 199 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 769 m; within 80 km, large variations in elevation — a maximum elevation change of 1,028 m.
The land around Dois Irmãos is covered by trees (71%) within 3 km, trees (74%) within 16 km, and trees (58%) and grassland (24%) 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 Dois Irmãos (-29.5803°, -51.0853°, elevation 181 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.