Arroio Grande in Fall
In fall (March, April and May), Arroio Grande sees average daytime highs around 23°C and overnight lows near 16°C, with 323 mm of rain over about 29 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 27°C in early March to 18°C by late May. The sky is clear or mostly clear about 32% of the time across fall, and the air most often feels dry.
Fall is Arroio Grande's best season of the year to visit on our travel score. For the whole year in context, see Arroio Grande's year-round climate.
- Avg daytime high
- 23°C
- 2nd-warmest season
- Avg overnight low
- 16°C
- Rainfall
- 323 mm
- 29 wet days
- Avg wind
- 13 km/h
- Travel score
- 6.7
- best season of the year
- Months
- Mar · Apr · May
Temperature in Arroio Grande in Fall
Over the season highs ease from about 27°C in early March to 18°C by late May.
A typical fall day in Arroio Grande reaches about 23°C and drops to 16°C overnight. The warmest of the three months is March, the coolest May.
Arroio Grande 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 | 28° / 20° | 111 | 10.6 | 13.9 | 6.3 |
| Feb | 27° / 20° | 107 | 11.2 | 13.2 | 6.1 |
| Mar | 26° / 19° | 103 | 9.9 | 12.2 | 6.7 |
| Apr | 23° / 16° | 124 | 9.8 | 11.2 | 6.9 |
| May | 20° / 13° | 96 | 9 | 10.4 | 6.4 |
| Jun | 17° / 10° | 110 | 9.3 | 9.9 | 5.5 |
| Jul | 16° / 9° | 107 | 9.3 | 10.1 | 5.3 |
| Aug | 18° / 10° | 107 | 8.9 | 10.8 | 6.0 |
| Sep | 19° / 12° | 124 | 10.2 | 11.8 | 6.0 |
| Oct | 22° / 14° | 133 | 10.4 | 12.8 | 6.4 |
| Nov | 24° / 16° | 98 | 8.2 | 13.7 | 7.2 |
| Dec | 27° / 18° | 96 | 9.5 | 14.1 | 6.8 |
Cloud cover in Fall
The sky is clear or mostly clear about 32% of the time across fall.
Chance of precipitation in Fall
Arroio Grande gets around 323 mm of rain over 29 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 13 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 42 min in early March to 10 h 06 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 3.8 kWh/m².
Is fall a good time to visit Arroio Grande?
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 Arroio Grande for sightseeing.
What to pack for Arroio Grande in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Arroio Grande sees daytime highs around 23°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 29 days see rain.
UV index in Arroio Grande in Fall
Clear-sky midday UV across fall averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Arroio Grande peaks around January 15 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 13 | 12 | 10 | 6 | 4 | 3 | 3 | 4 | 7 | 7 | 11 | 12 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | High | High | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 6 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 3 | Moderate |
| Aug | 4 | Moderate |
| Sep | 7 | High |
| Oct | 7 | High |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Where is Arroio Grande?
Arroio Grande sits at 32.2°S, 53.1°W, 31 m above sea level, in Brazil. The nearest listed city is Jaguarão, 46 km away.
Topography around Arroio Grande
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arroio Grande.
Within 3 km, the terrain around Arroio Grande has only modest variations in elevation — a maximum elevation change of 62 m around an average of 33 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 240 m; within 80 km, significant variations in elevation — a maximum elevation change of 480 m.
The land around Arroio Grande is covered by cropland (34%), trees (27%) and grassland (26%) within 3 km, cropland (48%), grassland (25%) and trees (24%) within 16 km, and grassland (35%), cropland (22%) and trees (20%) 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 Arroio Grande (-32.2375°, -53.0869°, elevation 31 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.