Porto Nacional in Spring
In spring (September, October and November), Porto Nacional sees average daytime highs around 33°C and overnight lows near 23°C, with 361 mm of rain over about 40 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs ease from about 36°C in early September to 31°C by late November. The sky is clear or mostly clear about 27% of the time across spring, and the air most often feels oppressive.
Spring is Porto Nacional's weakest season of the year to visit on our travel score. For the whole year in context, see Porto Nacional's year-round climate.
- Avg daytime high
- 33°C
- 2nd-warmest season
- Avg overnight low
- 23°C
- Rainfall
- 361 mm
- 40 wet days
- Avg wind
- 6 km/h
- Travel score
- 2.8
- weakest season of the year
- Months
- Sep · Oct · Nov
Temperature in Porto Nacional in Spring
Over the season highs ease from about 36°C in early September to 31°C by late November.
A typical spring day in Porto Nacional reaches about 33°C and drops to 23°C overnight. The warmest of the three months is September, the coolest November.
How spring really feels in Porto Nacional
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.
Porto Nacional 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° / 22° | 297 | 26.2 | 12.6 | 3.0 |
| Feb | 30° / 22° | 266 | 23.9 | 12.4 | 2.9 |
| Mar | 30° / 23° | 247 | 25.3 | 12.1 | 3.0 |
| Apr | 31° / 23° | 144 | 16.9 | 11.8 | 3.5 |
| May | 32° / 23° | 36 | 5.9 | 11.5 | 4.2 |
| Jun | 33° / 21° | 2 | 0.3 | 11.4 | 4.6 |
| Jul | 33° / 21° | 0 | 0.1 | 11.4 | 4.4 |
| Aug | 35° / 22° | 1 | 0.3 | 11.6 | 3.3 |
| Sep | 36° / 24° | 20 | 3.2 | 11.9 | 2.6 |
| Oct | 34° / 24° | 114 | 14.5 | 12.2 | 2.9 |
| Nov | 31° / 23° | 227 | 22 | 12.5 | 3.0 |
| Dec | 31° / 23° | 261 | 24.3 | 12.6 | 3.0 |
Cloud cover in Spring
The sky is clear or mostly clear about 27% of the time across spring.
Chance of precipitation in Spring
Porto Nacional gets around 361 mm of rain over 40 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 6 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 5.8 kWh/m².
Hazard calendar for Porto Nacional
In spring, Porto Nacional overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Porto Nacional's monsoon runs November–April, when most of the year's rain falls.
Is spring a good time to visit Porto Nacional?
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 Porto Nacional.
What to pack for Porto Nacional in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Porto Nacional sees daytime highs around 33°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 40 days see rain.
UV index in Porto Nacional 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 Porto Nacional peaks around February 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 9 (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) | 14 | 15 | 14 | 12 | 10 | 9 | 9 | 10 | 12 | 10 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Extreme | Extreme | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 12 | Extreme |
| May | 10 | Extreme |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 10 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Air quality in Porto Nacional 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 Porto Nacional is worst in September — around 35 µg/m³ PM2.5 (moderate), about 4.2× the cleanest month (May, 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) | 10 | 9 | 11 | 10 | 8 | 9 | 9 | 20 | 35 | 28 | 14 | 11 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 10 | Good |
| Feb | 9 | Good |
| Mar | 11 | Good |
| Apr | 10 | Good |
| May | 8 | Good |
| Jun | 9 | Good |
| Jul | 9 | Good |
| Aug | 20 | Moderate |
| Sep | 35 | Moderate |
| Oct | 28 | Moderate |
| Nov | 14 | Moderate |
| Dec | 11 | Good |
Where is Porto Nacional?
Porto Nacional sits at 10.7°S, 48.4°W, 231 m above sea level, in Brazil. The nearest listed city is Palmas, 61 km away.
Topography around Porto Nacional
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Porto Nacional.
Within 3 km, the terrain around Porto Nacional has only modest variations in elevation — a maximum elevation change of 69 m around an average of 226 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 386 m; within 80 km, significant variations in elevation — a maximum elevation change of 534 m.
The land around Porto Nacional is covered by water (46%) and artificial surfaces (25%) within 3 km, grassland (43%) and trees (25%) within 16 km, and trees (44%) and grassland (38%) 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 Porto Nacional (-10.7081°, -48.4172°, elevation 231 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.