Grajaú in Spring
In spring (September, October and November), Grajaú sees average daytime highs around 34°C and overnight lows near 23°C, with 119 mm of rain over about 19 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 35°C in early September to 32°C by late November. The sky is clear or mostly clear about 42% of the time across spring, and the air most often feels oppressive.
Spring is Grajaú's 3rd-best season to visit on our travel score. For the whole year in context, see Grajaú's year-round climate.
- Avg daytime high
- 34°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 119 mm
- 19 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.4
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Grajaú in Spring
Over the season highs ease from about 35°C in early September to 32°C by late November.
A typical spring day in Grajaú reaches about 34°C and drops to 23°C overnight. The warmest of the three months is September, the coolest September.
How spring really feels in Grajaú
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.
Grajaú 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° | 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 Spring
The sky is clear or mostly clear about 42% of the time across spring.
Chance of precipitation in Spring
Grajaú gets around 119 mm of rain over 19 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 8 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 54 min in early September to 12 h 18 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 6.0 kWh/m².
Hazard calendar for Grajaú
None of Grajaú's seasonal hazards peak in spring. 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 spring a good time to visit Grajaú?
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 Grajaú. The water and warmth also suit a beach or pool day.
What to pack for Grajaú in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Grajaú sees daytime highs around 34°C and nights near 23°C. Pack light clothes and sun protection. Worth having: rain gear. About 19 days see rain.
UV index in Grajaú in Spring
Clear-sky midday UV across spring averages around 12 (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 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 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.