Altônia in Spring
In spring (September, October and November), Altônia sees average daytime highs around 28°C and overnight lows near 20°C, with 412 mm of rain over about 32 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 27°C in early September to 30°C by late November. The sky is clear or mostly clear about 38% of the time across spring, and the air most often feels muggy.
Spring is Altônia's 3rd-best season to visit on our travel score. For the whole year in context, see Altônia's year-round climate.
- Avg daytime high
- 28°C
- 2nd-warmest season
- Avg overnight low
- 20°C
- Rainfall
- 412 mm
- 32 wet days
- Avg wind
- 10 km/h
- Travel score
- 5.8
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Altônia in Spring
Over the season highs climb from about 27°C in early September to 30°C by late November.
A typical spring day in Altônia reaches about 28°C and drops to 20°C overnight. The warmest of the three months is November, the coolest September.
How spring really feels in Altônia
Once humidity and wind are folded in, spring brings about 2 days that feel above 32°C and 0 that feel at or below 0°C.
The story in spring is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Altônia weather by month
How the three spring months (September, October and November) 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 | 31° / 23° | 144 | 16.6 | 13.3 | 3.9 |
| Feb | 31° / 23° | 143 | 14.6 | 12.8 | 4.0 |
| Mar | 30° / 22° | 107 | 12.7 | 12.2 | 4.7 |
| Apr | 28° / 20° | 91 | 7.7 | 11.5 | 6.4 |
| May | 24° / 17° | 125 | 8.8 | 10.9 | 7.2 |
| Jun | 23° / 16° | 107 | 8.1 | 10.6 | 7.4 |
| Jul | 23° / 15° | 84 | 6.9 | 10.7 | 7.6 |
| Aug | 25° / 16° | 82 | 6.2 | 11.2 | 7.8 |
| Sep | 27° / 18° | 115 | 8.5 | 11.9 | 6.9 |
| Oct | 29° / 20° | 160 | 12.1 | 12.6 | 5.4 |
| Nov | 30° / 21° | 137 | 11.7 | 13.2 | 5.0 |
| Dec | 30° / 23° | 154 | 15 | 13.4 | 4.2 |
Cloud cover in Spring
The sky is clear or mostly clear about 38% of the time across spring.
Chance of precipitation in Spring
Altônia gets around 412 mm of rain over 32 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 10 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 30 min in early September to 13 h 24 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.6 kWh/m².
Is spring a good time to visit Altônia?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Altônia for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Altônia in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Altônia sees daytime highs around 28°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 32 days see rain.
UV index in Altônia in Spring
Clear-sky midday UV across spring 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 Altônia peaks around January 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 5 (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) | 15 | 14 | 12 | 9 | 6 | 5 | 5 | 7 | 4 | 11 | 12 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | Moderate | 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 | 7 | Very high |
| Sep | 4 | Moderate |
| Oct | 11 | Extreme |
| Nov | 12 | Extreme |
| Dec | 14 | Extreme |
Air quality in Altônia in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Altônia is worst in September — around 26 µg/m³ PM2.5 (moderate), about 4.7× 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) | 8 | 7 | 6 | 7 | 8 | 8 | 7 | 17 | 26 | 13 | 9 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 7 | Good |
| Mar | 6 | Good |
| Apr | 7 | Good |
| May | 8 | Good |
| Jun | 8 | Good |
| Jul | 7 | Good |
| Aug | 17 | Moderate |
| Sep | 26 | Moderate |
| Oct | 13 | Moderate |
| Nov | 9 | Good |
| Dec | 7 | Good |
Where is Altônia?
Altônia sits at 23.9°S, 53.9°W, 353 m above sea level, in Brazil. The nearest listed city is Iporã, 25 km away.
Topography around Altônia
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Altônia.
Within 3 km, the terrain around Altônia has only modest variations in elevation — a maximum elevation change of 114 m around an average of 353 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 216 m; within 80 km, significant variations in elevation — a maximum elevation change of 297 m.
The land around Altônia is covered by grassland (36%) and cropland (36%) within 3 km, cropland (40%) and grassland (38%) within 16 km, and cropland (58%) 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 Altônia (-23.8744°, -53.9017°, elevation 353 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.