Piraí do Sul in Summer
In summer (December, January and February), Piraí do Sul sees average daytime highs around 26°C and overnight lows near 17°C, with 602 mm of rain over about 65 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 26°C. The sky is clear or mostly clear about 12% of the time across summer, and the air most often feels muggy.
Summer is Piraí do Sul's weakest season of the year to visit on our travel score. For the whole year in context, see Piraí do Sul's year-round climate.
- Avg daytime high
- 26°C
- warmest season of the year
- Avg overnight low
- 17°C
- Rainfall
- 602 mm
- 65 wet days
- Avg wind
- 10 km/h
- Travel score
- 4.7
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Piraí do Sul in Summer
Across summer, daytime highs hold fairly steady around 26°C.
A typical summer day in Piraí do Sul reaches about 26°C and drops to 17°C overnight. The warmest of the three months is January, the coolest December.
Piraí do Sul 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 | 26° / 17° | 242 | 24.1 | 13.3 | 4.5 |
| Feb | 26° / 17° | 180 | 20.8 | 12.9 | 4.6 |
| Mar | 25° / 17° | 135 | 18.2 | 12.2 | 5.5 |
| Apr | 24° / 15° | 71 | 9.6 | 11.4 | 6.9 |
| May | 20° / 12° | 94 | 9.2 | 10.8 | 6.6 |
| Jun | 19° / 11° | 96 | 8 | 10.5 | 6.6 |
| Jul | 20° / 10° | 79 | 6.8 | 10.6 | 6.9 |
| Aug | 21° / 11° | 71 | 7.1 | 11.1 | 7.3 |
| Sep | 23° / 12° | 130 | 10.3 | 11.8 | 6.7 |
| Oct | 24° / 14° | 145 | 15.5 | 12.6 | 5.9 |
| Nov | 25° / 15° | 139 | 16.3 | 13.2 | 5.8 |
| Dec | 26° / 17° | 180 | 19.9 | 13.5 | 5.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 12% of the time across summer.
Chance of precipitation in Summer
Piraí do Sul gets around 602 mm of rain over 65 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 10 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 24 min in early December to 12 h 36 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 5.6 kWh/m².
Is summer a good time to visit Piraí do Sul?
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 Piraí do Sul for sightseeing.
What to pack for Piraí do Sul in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Piraí do Sul sees daytime highs around 26°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 65 days see rain.
UV index in Piraí do Sul in Summer
Clear-sky midday UV across summer averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Piraí do Sul peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 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 | 15 | 13 | 9 | 7 | 6 | 5 | 7 | 5 | 12 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 13 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 7 | Very high |
| Sep | 5 | High |
| Oct | 12 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Air quality in Piraí do Sul 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 Piraí do Sul is worst in September — around 17 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (March, 6 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 | 6 | 7 | 8 | 8 | 10 | 14 | 17 | 10 | 7 | 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 | 6 | Good |
| Apr | 7 | Good |
| May | 8 | Good |
| Jun | 8 | Good |
| Jul | 10 | Good |
| Aug | 14 | Moderate |
| Sep | 17 | Moderate |
| Oct | 10 | Good |
| Nov | 7 | Good |
| Dec | 7 | Good |
Where is Piraí do Sul?
Piraí do Sul sits at 24.5°S, 49.9°W, 1,000 m above sea level, in Brazil. The nearest listed city is Castro, 30 km away.
Topography around Piraí do Sul
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Piraí do Sul.
Within 3 km, the terrain around Piraí do Sul has only modest variations in elevation — a maximum elevation change of 207 m around an average of 1,038 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 414 m; within 80 km, large variations in elevation — a maximum elevation change of 1,159 m.
The land around Piraí do Sul is covered by trees (47%) and grassland (24%) within 3 km, trees (49%), cropland (29%) and grassland (22%) within 16 km, and trees (59%) and cropland (26%) 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 Piraí do Sul (-24.5261°, -49.9486°, elevation 1,000 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.