São Simão in Fall
In fall (March, April and May), São Simão sees average daytime highs around 30°C and overnight lows near 21°C, with 295 mm of rain over about 36 wet days across the season. It is the 3rd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 31°C in early March to 28°C by late May. The sky is clear or mostly clear about 42% of the time across fall, and the air most often feels oppressive.
Fall is São Simão's 2nd-best season to visit on our travel score. For the whole year in context, see São Simão's year-round climate.
- Avg daytime high
- 30°C
- 3rd-warmest season
- Avg overnight low
- 21°C
- Rainfall
- 295 mm
- 36 wet days
- Avg wind
- 7 km/h
- Travel score
- 5.0
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in São Simão in Fall
Over the season highs ease from about 31°C in early March to 28°C by late May.
A typical fall day in São Simão reaches about 30°C and drops to 21°C overnight. The warmest of the three months is March, the coolest May.
How fall really feels in São Simão
Once humidity and wind are folded in, fall brings about 51 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
São Simão 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 | 31° / 23° | 267 | 23.8 | 13 | 3.2 |
| Feb | 31° / 23° | 207 | 21.4 | 12.6 | 3.2 |
| Mar | 31° / 22° | 194 | 21.3 | 12.1 | 3.5 |
| Apr | 30° / 21° | 72 | 10 | 11.6 | 4.9 |
| May | 29° / 19° | 28 | 4.4 | 11.1 | 6.5 |
| Jun | 29° / 18° | 14 | 1.6 | 10.9 | 7.1 |
| Jul | 29° / 17° | 8 | 0.9 | 11 | 7.0 |
| Aug | 31° / 19° | 10 | 1.7 | 11.4 | 5.6 |
| Sep | 33° / 21° | 45 | 6.1 | 11.9 | 4.1 |
| Oct | 33° / 22° | 115 | 13.9 | 12.4 | 3.3 |
| Nov | 31° / 22° | 185 | 19.6 | 12.9 | 3.3 |
| Dec | 31° / 23° | 241 | 24.1 | 13.1 | 3.1 |
Cloud cover in Fall
The sky is clear or mostly clear about 42% of the time across fall.
Chance of precipitation in Fall
São Simão gets around 295 mm of rain over 36 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 7 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early March to 11 hours 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 5.1 kWh/m².
Hazard calendar for São Simão
In fall, São Simão overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
São Simão's monsoon runs November–March, when most of the year's rain falls.
Is fall a good time to visit São Simão?
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 Simão for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for São Simão in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, São Simão sees daytime highs around 30°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 36 days see rain.
UV index in São Simão in Fall
Clear-sky midday UV across fall averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in São Simão peaks around January 24 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 7 (very 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 | 14 | 11 | 8 | 7 | 7 | 9 | 11 | 11 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | High | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 11 | Extreme |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 7 | Very high |
| Aug | 9 | Very high |
| Sep | 11 | Extreme |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in São Simão 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 Simão is worst in September — around 34 µg/m³ PM2.5 (moderate), about 6.1× the cleanest month (November, 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 | 8 | 8 | 6 | 6 | 6 | 7 | 14 | 34 | 13 | 6 | 6 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 8 | Good |
| Mar | 8 | Good |
| Apr | 6 | Good |
| May | 6 | Good |
| Jun | 6 | Good |
| Jul | 7 | Good |
| Aug | 14 | Moderate |
| Sep | 34 | Moderate |
| Oct | 13 | Moderate |
| Nov | 6 | Good |
| Dec | 6 | Good |
Where is São Simão?
São Simão sits at 19.0°S, 50.5°W, 471 m above sea level, in Brazil. The nearest listed city is Santa Vitória, 48 km away.
Topography around São Simão
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Simão.
Within 3 km, the terrain around São Simão has only modest variations in elevation — a maximum elevation change of 106 m around an average of 449 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 208 m; within 80 km, significant variations in elevation — a maximum elevation change of 517 m.
The land around São Simão is covered by grassland (45%) and cropland (20%) within 3 km, cropland (40%) and grassland (35%) within 16 km, and cropland (50%) and grassland (30%) 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 Simão (-18.9911°, -50.5436°, elevation 471 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.