Rosário Oeste in Spring
In spring (September, October and November), Rosário Oeste sees average daytime highs around 33°C and overnight lows near 23°C, with 329 mm of rain over about 45 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Over the season highs ease from about 34°C in early September to 31°C by late November. The sky is clear or mostly clear about 29% of the time across spring, and the air most often feels oppressive.
Spring is Rosário Oeste's 3rd-best season to visit on our travel score. For the whole year in context, see Rosário Oeste's year-round climate.
- Avg daytime high
- 33°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 329 mm
- 45 wet days
- Avg wind
- 7 km/h
- Travel score
- 3.1
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Rosário Oeste in Spring
Over the season highs ease from about 34°C in early September to 31°C by late November.
A typical spring day in Rosário Oeste reaches about 33°C and drops to 23°C overnight. The warmest of the three months is September, the coolest September.
How spring really feels in Rosário Oeste
Once humidity and wind are folded in, spring brings about 91 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.
Rosário Oeste 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° | 244 | 25.6 | 12.8 | 2.9 |
| Feb | 31° / 23° | 221 | 24.6 | 12.5 | 2.8 |
| Mar | 31° / 23° | 204 | 24.8 | 12.1 | 2.9 |
| Apr | 31° / 22° | 97 | 15.7 | 11.7 | 3.9 |
| May | 30° / 20° | 31 | 5.3 | 11.3 | 5.5 |
| Jun | 30° / 19° | 9 | 1.3 | 11.1 | 6.1 |
| Jul | 31° / 18° | 5 | 0.6 | 11.2 | 6.1 |
| Aug | 33° / 20° | 10 | 1.5 | 11.5 | 4.6 |
| Sep | 34° / 22° | 42 | 7.4 | 11.9 | 3.4 |
| Oct | 33° / 23° | 117 | 16.7 | 12.3 | 2.9 |
| Nov | 32° / 23° | 170 | 21 | 12.7 | 2.9 |
| Dec | 31° / 23° | 205 | 24.3 | 12.9 | 2.9 |
Cloud cover in Spring
The sky is clear or mostly clear about 29% of the time across spring.
Chance of precipitation in Spring
Rosário Oeste gets around 329 mm of rain over 45 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 7 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 42 min in early September to 12 h 48 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 5.8 kWh/m².
Hazard calendar for Rosário Oeste
In spring, Rosário Oeste overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Rosário Oeste's monsoon runs October–March, when most of the year's rain falls.
Is spring a good time to visit Rosário Oeste?
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 weaker month for outdoor sightseeing in Rosário Oeste.
What to pack for Rosário Oeste in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Rosário Oeste sees daytime highs around 33°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 45 days see rain.
UV index in Rosário Oeste in Spring
Clear-sky midday UV across spring averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rosário Oeste peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 6 (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 | 12 | 9 | 8 | 8 | 9 | 5 | 11 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 12 | Extreme |
| May | 9 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 9 | Very high |
| Sep | 5 | High |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Air quality in Rosário Oeste 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 Rosário Oeste is worst in September — around 64 µg/m³ PM2.5 (unhealthy), about 8.8× the cleanest month (May, 7 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) | 9 | 9 | 8 | 8 | 7 | 7 | 10 | 26 | 64 | 20 | 11 | 10 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Unhealthy | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 8 | Good |
| Apr | 8 | Good |
| May | 7 | Good |
| Jun | 7 | Good |
| Jul | 10 | Good |
| Aug | 26 | Moderate |
| Sep | 64 | Unhealthy |
| Oct | 20 | Moderate |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is Rosário Oeste?
Rosário Oeste sits at 14.8°S, 56.4°W, 201 m above sea level, in Brazil. The nearest listed city is Nobres, 17 km away.
Topography around Rosário Oeste
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosário Oeste.
Within 3 km, the terrain around Rosário Oeste has only modest variations in elevation — a maximum elevation change of 116 m around an average of 198 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 423 m; within 80 km, large variations in elevation — a maximum elevation change of 740 m.
The land around Rosário Oeste is covered by trees (48%) and grassland (37%) within 3 km, trees (43%) and grassland (42%) within 16 km, and trees (44%) and grassland (37%) 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 Rosário Oeste (-14.8361°, -56.4275°, elevation 201 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.