Cacoal in Spring
In spring (September, October and November), Cacoal sees average daytime highs around 32°C and overnight lows near 22°C, with 485 mm of rain over about 61 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 33°C in early September to 30°C by late November. The sky is clear or mostly clear about 18% of the time across spring, and the air most often feels oppressive.
Spring is Cacoal's 3rd-best season to visit on our travel score. For the whole year in context, see Cacoal's year-round climate.
- Avg daytime high
- 32°C
- 2nd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 485 mm
- 61 wet days
- Avg wind
- 5 km/h
- Travel score
- 2.9
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Cacoal in Spring
Over the season highs ease from about 33°C in early September to 30°C by late November.
A typical spring day in Cacoal reaches about 32°C and drops to 22°C overnight. The warmest of the three months is September, the coolest September.
How spring really feels in Cacoal
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.
Cacoal 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 | 29° / 22° | 308 | 29.3 | 12.6 | 2.8 |
| Feb | 29° / 22° | 297 | 26.4 | 12.4 | 2.8 |
| Mar | 30° / 22° | 270 | 28.2 | 12.1 | 2.9 |
| Apr | 30° / 22° | 151 | 22.3 | 11.8 | 3.4 |
| May | 30° / 21° | 77 | 13.4 | 11.5 | 4.7 |
| Jun | 31° / 20° | 17 | 3.5 | 11.3 | 5.5 |
| Jul | 32° / 20° | 11 | 2.1 | 11.4 | 5.1 |
| Aug | 33° / 21° | 26 | 4.8 | 11.6 | 4.0 |
| Sep | 33° / 22° | 90 | 14.2 | 11.9 | 3.1 |
| Oct | 32° / 23° | 157 | 21.8 | 12.3 | 2.8 |
| Nov | 31° / 23° | 239 | 25 | 12.5 | 2.8 |
| Dec | 30° / 23° | 284 | 27.9 | 12.7 | 2.9 |
Cloud cover in Spring
The sky is clear or mostly clear about 18% of the time across spring.
Chance of precipitation in Spring
Cacoal gets around 485 mm of rain over 61 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 5 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 48 min in early September to 12 h 36 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 5.7 kWh/m².
Hazard calendar for Cacoal
In spring, Cacoal overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Cacoal's monsoon runs October–April, when most of the year's rain falls.
Is spring a good time to visit Cacoal?
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 Cacoal.
What to pack for Cacoal in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Cacoal sees daytime highs around 32°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 61 days see rain.
UV index in Cacoal in Spring
Clear-sky midday UV across spring averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Cacoal peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 14 at about 4 (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) | 15 | 15 | 15 | 13 | 10 | 9 | 9 | 8 | 3 | 11 | 14 | 14 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Moderate | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 3 | Moderate |
| Oct | 11 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Air quality in Cacoal 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 Cacoal is worst in September — around 53 µg/m³ PM2.5 (poor), about 6.8× the cleanest month (July, 8 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) | 12 | 12 | 12 | 10 | 9 | 8 | 8 | 31 | 53 | 21 | 15 | 13 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Poor | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Good |
| Feb | 12 | Good |
| Mar | 12 | Good |
| Apr | 10 | Good |
| May | 9 | Good |
| Jun | 8 | Good |
| Jul | 8 | Good |
| Aug | 31 | Moderate |
| Sep | 53 | Poor |
| Oct | 21 | Moderate |
| Nov | 15 | Moderate |
| Dec | 13 | Moderate |
Where is Cacoal?
Cacoal sits at 11.4°S, 61.4°W, 197 m above sea level, in Brazil. The nearest listed city is Pimenta Bueno, 38 km away.
Topography around Cacoal
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cacoal.
Within 3 km, the terrain around Cacoal has only modest variations in elevation — a maximum elevation change of 80 m around an average of 189 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 262 m; within 80 km, significant variations in elevation — a maximum elevation change of 434 m.
The land around Cacoal is covered by artificial surfaces (45%), trees (27%) and grassland (25%) within 3 km, grassland (68%) and trees (27%) within 16 km, and grassland (60%) and trees (39%) 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 Cacoal (-11.4386°, -61.4472°, elevation 197 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.