Grajaú in Winter
In winter (June, July and August), Grajaú sees average daytime highs around 33°C and overnight lows near 22°C, with 15 mm of rain over about 3 wet days across the season. It is the 2nd-warmest season and the driest season of the year.
Over the season highs climb from about 32°C in early June to 35°C by late August. The sky is clear or mostly clear about 64% of the time across winter, and the air most often feels muggy.
Winter is Grajaú's best season of the year to visit on our travel score. For the whole year in context, see Grajaú's year-round climate.
- Avg daytime high
- 33°C
- 2nd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 15 mm
- 3 wet days
- Avg wind
- 9 km/h
- Travel score
- 4.3
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Grajaú in Winter
Over the season highs climb from about 32°C in early June to 35°C by late August.
A typical winter day in Grajaú reaches about 33°C and drops to 22°C overnight. The warmest of the three months is August, the coolest July.
How winter really feels in Grajaú
Once humidity and wind are folded in, winter brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in winter is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Grajaú weather by month
How the three winter months (June, July and August) 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° | 172 | 24.8 | 12.3 | 3.0 |
| Feb | 30° / 22° | 175 | 23.9 | 12.2 | 2.9 |
| Mar | 31° / 23° | 188 | 26.1 | 12 | 2.9 |
| Apr | 31° / 23° | 132 | 20.4 | 11.9 | 3.3 |
| May | 31° / 22° | 64 | 10.5 | 11.7 | 4.2 |
| Jun | 32° / 22° | 8 | 1.6 | 11.7 | 4.8 |
| Jul | 33° / 21° | 5 | 0.8 | 11.7 | 4.4 |
| Aug | 34° / 22° | 2 | 0.3 | 11.8 | 3.8 |
| Sep | 35° / 23° | 9 | 1.7 | 12 | 3.4 |
| Oct | 34° / 24° | 32 | 5.3 | 12.1 | 3.4 |
| Nov | 33° / 24° | 78 | 11.9 | 12.3 | 3.4 |
| Dec | 32° / 23° | 135 | 17.7 | 12.3 | 3.3 |
Cloud cover in Winter
The sky is clear or mostly clear about 64% of the time across winter.
Chance of precipitation in Winter
Grajaú gets around 15 mm of rain over 3 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 9 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 42 min in early June to 11 h 54 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 5.6 kWh/m².
Hazard calendar for Grajaú
None of Grajaú's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Grajaú's monsoon runs December–April, when most of the year's rain falls.
Is winter a good time to visit Grajaú?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Grajaú for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Grajaú in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Grajaú sees daytime highs around 33°C and nights near 22°C. Pack light clothes and sun protection.
UV index in Grajaú in Winter
Clear-sky midday UV across winter 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 Grajaú peaks around March 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 10 (extreme).
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 | 15 | 15 | 14 | 11 | 10 | 10 | 11 | 12 | 12 | 12 | 10 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Extreme |
| Jul | 10 | Very high |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 12 | Extreme |
| Dec | 10 | Extreme |
Air quality in Grajaú in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Grajaú is worst in October — around 28 µg/m³ PM2.5 (moderate), about 4.5× the cleanest month (June, 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) | 13 | 12 | 12 | 11 | 9 | 6 | 8 | 17 | 26 | 28 | 22 | 17 |
| Level | Moderate | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 12 | Good |
| Mar | 12 | Good |
| Apr | 11 | Good |
| May | 9 | Good |
| Jun | 6 | Good |
| Jul | 8 | Good |
| Aug | 17 | Moderate |
| Sep | 26 | Moderate |
| Oct | 28 | Moderate |
| Nov | 22 | Moderate |
| Dec | 17 | Moderate |
Where is Grajaú?
Grajaú sits at 5.8°S, 46.1°W, 163 m above sea level, in Brazil. The nearest listed city is Sítio Novo, 62 km away.
Topography around Grajaú
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Grajaú.
Within 3 km, the terrain around Grajaú has only modest variations in elevation — a maximum elevation change of 115 m around an average of 193 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 218 m; within 80 km, significant variations in elevation — a maximum elevation change of 593 m.
The land around Grajaú is covered by trees (53%), grassland (24%) and artificial surfaces (20%) within 3 km, trees (58%) and grassland (33%) within 16 km, and trees (66%) and grassland (26%) 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 Grajaú (-5.8194°, -46.1386°, elevation 163 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.