Arinos in Spring
In spring (September, October and November), Arinos sees average daytime highs around 32°C and overnight lows near 21°C, with 276 mm of rain over about 28 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Over the season highs ease from about 32°C in early September to 30°C by late November. The sky is clear or mostly clear about 40% of the time across spring, and the air most often feels muggy.
Spring is Arinos's 3rd-best season to visit on our travel score. For the whole year in context, see Arinos's year-round climate.
- Avg daytime high
- 32°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 276 mm
- 28 wet days
- Avg wind
- 7 km/h
- Travel score
- 4.0
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Arinos in Spring
Over the season highs ease from about 32°C in early September to 30°C by late November.
A typical spring day in Arinos reaches about 32°C and drops to 21°C overnight. The warmest of the three months is October, the coolest September.
How spring really feels in Arinos
Once humidity and wind are folded in, spring brings about 63 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.
Arinos 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 | 30° / 21° | 163 | 16.4 | 12.8 | 4.0 |
| Feb | 31° / 21° | 119 | 13.6 | 12.5 | 4.1 |
| Mar | 30° / 21° | 150 | 15.4 | 12.1 | 4.2 |
| Apr | 30° / 20° | 51 | 8.1 | 11.7 | 5.2 |
| May | 30° / 19° | 12 | 2.4 | 11.3 | 6.3 |
| Jun | 29° / 17° | 3 | 0.4 | 11.1 | 7.2 |
| Jul | 29° / 16° | 0 | 0.1 | 11.1 | 7.3 |
| Aug | 31° / 17° | 2 | 0.5 | 11.5 | 6.2 |
| Sep | 33° / 20° | 14 | 2.1 | 11.9 | 4.6 |
| Oct | 33° / 22° | 75 | 8.7 | 12.4 | 3.7 |
| Nov | 30° / 21° | 187 | 17.4 | 12.7 | 3.8 |
| Dec | 30° / 21° | 208 | 19 | 12.9 | 3.9 |
Cloud cover in Spring
The sky is clear or mostly clear about 40% of the time across spring.
Chance of precipitation in Spring
Arinos gets around 276 mm of rain over 28 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels muggy — 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 54 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 6.1 kWh/m².
Hazard calendar for Arinos
In spring, Arinos overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Arinos's monsoon runs November–March, when most of the year's rain falls.
Is spring a good time to visit Arinos?
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 reasonable time to visit Arinos for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Arinos in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Arinos sees daytime highs around 32°C and nights near 21°C. Pack light clothes, rain gear and sun protection. About 28 days see rain.
UV index in Arinos in Spring
Clear-sky midday UV across spring averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Arinos peaks around February 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 8 (very 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 | 16 | 14 | 12 | 9 | 8 | 8 | 10 | 12 | 13 | 14 | 13 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 16 | Extreme |
| Mar | 14 | Extreme |
| Apr | 12 | Extreme |
| May | 9 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 10 | Very high |
| Sep | 12 | Extreme |
| Oct | 13 | Extreme |
| Nov | 14 | Extreme |
| Dec | 13 | Extreme |
Where is Arinos?
Arinos sits at 15.9°S, 46.1°W, 517 m above sea level, in Brazil. The nearest listed city is Urucuia, 46 km away.
Topography around Arinos
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arinos.
Within 3 km, the terrain around Arinos has only modest variations in elevation — a maximum elevation change of 47 m around an average of 514 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 452 m; within 80 km, significant variations in elevation — a maximum elevation change of 541 m.
The land around Arinos is covered by grassland (41%), shrubs (23%) and trees (20%) within 3 km, shrubs (34%), grassland (31%) and trees (27%) within 16 km, and shrubs (37%), grassland (29%) and trees (20%) 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 Arinos (-15.9169°, -46.1056°, elevation 517 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.