São Lourenço do Sul in Fall
In fall (March, April and May), São Lourenço do Sul sees average daytime highs around 23°C and overnight lows near 17°C, with 304 mm of rain over about 31 wet days across the season. It is the 2nd-warmest season and the driest season of the year.
Over the season highs ease from about 27°C in early March to 19°C by late May. The sky is clear or mostly clear about 32% of the time across fall, and the air most often feels humid.
Fall is São Lourenço do Sul's best season of the year to visit on our travel score. For the whole year in context, see São Lourenço do Sul's year-round climate.
- Avg daytime high
- 23°C
- 2nd-warmest season
- Avg overnight low
- 17°C
- Rainfall
- 304 mm
- 31 wet days
- Avg wind
- 14 km/h
- Travel score
- 6.6
- best season of the year
- Months
- Mar · Apr · May
Temperature in São Lourenço do Sul in Fall
Over the season highs ease from about 27°C in early March to 19°C by late May.
A typical fall day in São Lourenço do Sul reaches about 23°C and drops to 17°C overnight. The warmest of the three months is March, the coolest May.
São Lourenço do Sul 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° / 21° | 110 | 14 | 13.8 | 5.9 |
| Feb | 27° / 21° | 112 | 13.3 | 13.1 | 5.8 |
| Mar | 26° / 20° | 101 | 12.5 | 12.2 | 6.3 |
| Apr | 24° / 17° | 102 | 9.7 | 11.3 | 6.9 |
| May | 20° / 14° | 101 | 9 | 10.4 | 6.5 |
| Jun | 18° / 11° | 103 | 9.2 | 10 | 5.9 |
| Jul | 17° / 10° | 119 | 10.1 | 10.2 | 5.6 |
| Aug | 19° / 11° | 116 | 9.9 | 10.9 | 6.1 |
| Sep | 20° / 13° | 139 | 11 | 11.8 | 5.9 |
| Oct | 22° / 15° | 137 | 12.5 | 12.8 | 6.2 |
| Nov | 24° / 17° | 98 | 9.9 | 13.6 | 6.9 |
| Dec | 27° / 19° | 104 | 11.4 | 14 | 6.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 32% of the time across fall.
Chance of precipitation in Fall
São Lourenço do Sul gets around 304 mm of rain over 31 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 14 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 3.9 kWh/m².
Is fall a good time to visit São Lourenço do Sul?
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 São Lourenço do Sul for sightseeing.
What to pack for São Lourenço do Sul in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, São Lourenço do Sul sees daytime highs around 23°C and nights near 17°C. Worth packing: light clothes, rain gear and sun protection. About 31 days see rain.
Sea temperature near São Lourenço do Sul in Fall
The nearest coast averages about 22°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in February at about 26°C and coldest in July near 14°C.
It's comfortable for a long swim from Oct 31 to May 3 — about 6.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 25 | 26 | 25 | 22 | 19 | 16 | 14 | 15 | 16 | 19 | 21 | 24 |
| Comfort | Warm | Warm | Warm | Refreshing | Cool | Cool | Bracing | Bracing | Cool | Cool | Refreshing | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 26 | Warm |
| Mar | 25 | Warm |
| Apr | 22 | Refreshing |
| May | 19 | Cool |
| Jun | 16 | Cool |
| Jul | 14 | Bracing |
| Aug | 15 | Bracing |
| Sep | 16 | Cool |
| Oct | 19 | Cool |
| Nov | 21 | Refreshing |
| Dec | 24 | Refreshing |
UV index in São Lourenço do Sul 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 São Lourenço do Sul peaks around December 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (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) | 12 | 12 | 9 | 7 | 4 | 3 | 4 | 5 | 7 | 8 | 11 | 13 |
| Level | Extreme | Extreme | Very high | High | Moderate | Moderate | Moderate | Moderate | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 12 | Extreme |
| Feb | 12 | Extreme |
| Mar | 9 | Very high |
| Apr | 7 | High |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | Moderate |
| Sep | 7 | Very high |
| Oct | 8 | Very high |
| Nov | 11 | Extreme |
| Dec | 13 | Extreme |
Where is São Lourenço do Sul?
São Lourenço do Sul sits at 31.4°S, 52.0°W, 13 m above sea level, in Brazil. The nearest listed city is Pelotas, 57 km away.
Topography around São Lourenço do Sul
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Lourenço do Sul.
Within 3 km, the terrain around São Lourenço do Sul has only modest variations in elevation — a maximum elevation change of 30 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 199 m; within 80 km, significant variations in elevation — a maximum elevation change of 507 m.
The land around São Lourenço do Sul is covered by water (26%) and cropland (23%) within 3 km, water (38%) and cropland (31%) within 16 km, and water (35%) and trees (28%) 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 Lourenço do Sul (-31.3653°, -51.9783°, elevation 13 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.