Alta Floresta d'Oeste in Summer
In summer (December, January and February), Alta Floresta d'Oeste sees average daytime highs around 29°C and overnight lows near 22°C, with 861 mm of rain over about 83 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 2% of the time across summer, and the air most often feels oppressive.
Summer is Alta Floresta d'Oeste's weakest season of the year to visit on our travel score. For the whole year in context, see Alta Floresta d'Oeste's year-round climate.
- Avg daytime high
- 29°C
- coldest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 861 mm
- 83 wet days
- Avg wind
- 6 km/h
- Travel score
- 3.0
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Alta Floresta d'Oeste in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Alta Floresta d'Oeste reaches about 29°C and drops to 22°C overnight. The warmest of the three months is December, the coolest January.
How summer really feels in Alta Floresta d'Oeste
Once humidity and wind are folded in, summer brings about 54 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Alta Floresta d'Oeste weather by month
How the three summer months (December, January and February) 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° | 300 | 28.7 | 12.6 | 3.0 |
| Feb | 29° / 22° | 288 | 26.3 | 12.4 | 3.0 |
| Mar | 29° / 22° | 280 | 28.5 | 12.1 | 3.1 |
| Apr | 29° / 21° | 150 | 21.9 | 11.7 | 3.8 |
| May | 29° / 20° | 69 | 13.3 | 11.5 | 5.1 |
| Jun | 30° / 20° | 18 | 3.8 | 11.3 | 6.2 |
| Jul | 31° / 19° | 12 | 2.6 | 11.4 | 5.9 |
| Aug | 32° / 20° | 27 | 4.9 | 11.6 | 4.8 |
| Sep | 32° / 21° | 81 | 12.8 | 11.9 | 3.7 |
| Oct | 31° / 22° | 163 | 21.6 | 12.3 | 3.2 |
| Nov | 30° / 22° | 233 | 25 | 12.6 | 3.1 |
| Dec | 29° / 22° | 273 | 27.6 | 12.7 | 3.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 2% of the time across summer.
Chance of precipitation in Summer
Alta Floresta d'Oeste gets around 861 mm of rain over 83 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 6 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 h 42 min in early December to 12 h 18 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 4.8 kWh/m².
Hazard calendar for Alta Floresta d'Oeste
In summer, Alta Floresta d'Oeste overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Alta Floresta d'Oeste's monsoon runs October–April, when most of the year's rain falls.
Is summer a good time to visit Alta Floresta d'Oeste?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Alta Floresta d'Oeste.
What to pack for Alta Floresta d'Oeste in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Alta Floresta d'Oeste sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 83 days see rain.
UV index in Alta Floresta d'Oeste in Summer
Clear-sky midday UV across summer averages around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Alta Floresta d'Oeste peaks around January 23 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 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) | 16 | 15 | 15 | 13 | 10 | 9 | 8 | 9 | 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 | 16 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Very high |
| Jun | 9 | Very high |
| Jul | 8 | Very high |
| Aug | 9 | Very high |
| Sep | 3 | Moderate |
| Oct | 11 | Extreme |
| Nov | 14 | Extreme |
| Dec | 14 | Extreme |
Air quality in Alta Floresta d'Oeste in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Alta Floresta d'Oeste is worst in September — around 53 µg/m³ PM2.5 (poor), about 6.9× the cleanest month (June, 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) | 11 | 12 | 12 | 9 | 8 | 8 | 8 | 34 | 53 | 23 | 15 | 13 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Poor | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 12 | Good |
| Mar | 12 | Good |
| Apr | 9 | Good |
| May | 8 | Good |
| Jun | 8 | Good |
| Jul | 8 | Good |
| Aug | 34 | Moderate |
| Sep | 53 | Poor |
| Oct | 23 | Moderate |
| Nov | 15 | Moderate |
| Dec | 13 | Moderate |
Where is Alta Floresta d'Oeste?
Alta Floresta d'Oeste sits at 12.0°S, 62.0°W, 350 m above sea level, in Brazil. The nearest listed city is Rolim de Moura, 25 km away.
Topography around Alta Floresta d'Oeste
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Alta Floresta d'Oeste.
Within 3 km, the terrain around Alta Floresta d'Oeste has only modest variations in elevation — a maximum elevation change of 160 m around an average of 368 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 249 m; within 80 km, significant variations in elevation — a maximum elevation change of 396 m.
The land around Alta Floresta d'Oeste is covered by grassland (71%) and trees (26%) within 3 km, grassland (72%) and trees (26%) within 16 km, and grassland (55%) and trees (43%) 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 Alta Floresta d'Oeste (-11.9681°, -61.9542°, elevation 350 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.