São Lourenço da Serra in Fall
In fall (March, April and May), São Lourenço da Serra sees average daytime highs around 24°C and overnight lows near 16°C, with 372 mm of rain over about 46 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 26°C in early March to 21°C by late May. The sky is clear or mostly clear about 22% of the time across fall, and the air most often feels humid.
Fall is São Lourenço da Serra's 2nd-best season to visit on our travel score. For the whole year in context, see São Lourenço da Serra's year-round climate.
- Avg daytime high
- 24°C
- 2nd-warmest season
- Avg overnight low
- 16°C
- Rainfall
- 372 mm
- 46 wet days
- Avg wind
- 9 km/h
- Travel score
- 5.9
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in São Lourenço da Serra in Fall
Over the season highs ease from about 26°C in early March to 21°C by late May.
A typical fall day in São Lourenço da Serra reaches about 24°C and drops to 16°C overnight. The warmest of the three months is March, the coolest May.
São Lourenço da Serra 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 | 26° / 19° | 292 | 25.9 | 13.3 | 4.1 |
| Feb | 27° / 19° | 238 | 22.2 | 12.8 | 4.3 |
| Mar | 26° / 18° | 209 | 22.8 | 12.2 | 4.7 |
| Apr | 24° / 16° | 91 | 13.4 | 11.5 | 6.2 |
| May | 22° / 14° | 73 | 9.5 | 10.9 | 6.7 |
| Jun | 21° / 13° | 61 | 6.8 | 10.6 | 7.1 |
| Jul | 21° / 12° | 64 | 6.6 | 10.7 | 7.1 |
| Aug | 22° / 12° | 50 | 6.4 | 11.2 | 7.4 |
| Sep | 23° / 14° | 107 | 11.1 | 11.9 | 6.6 |
| Oct | 24° / 15° | 144 | 17 | 12.6 | 5.6 |
| Nov | 24° / 16° | 188 | 19.2 | 13.2 | 5.2 |
| Dec | 26° / 18° | 229 | 23.1 | 13.4 | 4.6 |
Cloud cover in Fall
The sky is clear or mostly clear about 22% of the time across fall.
Chance of precipitation in Fall
São Lourenço da Serra gets around 372 mm of rain over 46 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 9 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 30 min in early March to 10 h 36 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 4.2 kWh/m².
Hazard calendar for São Lourenço da Serra
In fall, São Lourenço da Serra overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
São Lourenço da Serra's rainy season runs October–March, when most of the year's rain falls.
Is fall a good time to visit São Lourenço da Serra?
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 da Serra for sightseeing.
What to pack for São Lourenço da Serra in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, São Lourenço da Serra sees daytime highs around 24°C and nights near 16°C. Pack rain gear. Worth having: light clothes and sun protection. About 46 days see rain.
Sea temperature near São Lourenço da Serra in Fall
The nearest coast averages about 25°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 44 km away) is warmest in February at about 27°C and coldest in August near 20°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 26 | 24 | 22 | 21 | 20 | 21 | 22 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 24 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 20 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in São Lourenço da Serra in Fall
Clear-sky midday UV across fall averages around 8 — 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 da Serra peaks around January 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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) | 14 | 14 | 9 | 8 | 7 | 6 | 5 | 7 | 7 | 10 | 13 | 13 |
| Level | Extreme | Extreme | Very high | Very high | High | High | Moderate | High | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 7 | High |
| Sep | 7 | Very high |
| Oct | 10 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in São Lourenço da Serra in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall falls, not just the annual average.
Air quality in São Lourenço da Serra is worst in July — around 33 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (January, 17 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) | 17 | 17 | 18 | 20 | 24 | 30 | 33 | 32 | 29 | 21 | 17 | 17 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 17 | Moderate |
| Mar | 18 | Moderate |
| Apr | 20 | Moderate |
| May | 24 | Moderate |
| Jun | 30 | Moderate |
| Jul | 33 | Moderate |
| Aug | 32 | Moderate |
| Sep | 29 | Moderate |
| Oct | 21 | Moderate |
| Nov | 17 | Moderate |
| Dec | 17 | Moderate |
Where is São Lourenço da Serra?
São Lourenço da Serra sits at 23.9°S, 46.9°W, 706 m above sea level, in Brazil. The nearest listed city is Embu-Guaçu, 14 km away.
Topography around São Lourenço da Serra
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Lourenço da Serra.
Within 3 km, the terrain around São Lourenço da Serra has only modest variations in elevation — a maximum elevation change of 184 m around an average of 759 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 417 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,416 m.
The land around São Lourenço da Serra is covered by trees (87%) within 3 km, trees (90%) within 16 km, and trees (59%) 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 da Serra (-23.8525°, -46.9425°, elevation 706 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.