Porto Grande in Summer
In summer (June, July and August), Porto Grande sees average daytime highs around 31°C and overnight lows near 22°C, with 263 mm of rain over about 59 wet days across the season. It is the 2nd-warmest season and the 3rd-wettest season.
Over the season highs climb from about 30°C in early June to 33°C by late August. The sky is clear or mostly clear about 35% of the time across summer, and the air most often feels oppressive.
Summer is Porto Grande's best season of the year to visit on our travel score. For the whole year in context, see Porto Grande's year-round climate.
- Avg daytime high
- 31°C
- 2nd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 263 mm
- 59 wet days
- Avg wind
- 7 km/h
- Travel score
- 3.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Porto Grande in Summer
Over the season highs climb from about 30°C in early June to 33°C by late August.
A typical summer day in Porto Grande reaches about 31°C and drops to 22°C overnight. The warmest of the three months is August, the coolest July.
How summer really feels in Porto Grande
Once humidity and wind are folded in, summer brings about 92 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.
Porto Grande weather by month
How the three summer 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 | 30° / 23° | 193 | 27.1 | 12 | 2.9 |
| Feb | 29° / 23° | 239 | 24.9 | 12 | 3.0 |
| Mar | 30° / 23° | 256 | 27.1 | 12 | 3.0 |
| Apr | 30° / 23° | 271 | 28 | 12 | 2.8 |
| May | 30° / 23° | 245 | 28.6 | 12 | 2.8 |
| Jun | 30° / 22° | 127 | 25 | 12 | 3.1 |
| Jul | 31° / 22° | 93 | 21.6 | 12 | 3.5 |
| Aug | 32° / 23° | 42 | 12 | 12 | 3.9 |
| Sep | 34° / 23° | 17 | 4.3 | 12 | 3.6 |
| Oct | 35° / 23° | 15 | 3.4 | 12 | 3.1 |
| Nov | 34° / 23° | 31 | 6.6 | 12 | 3.0 |
| Dec | 32° / 23° | 104 | 19.5 | 12 | 3.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 35% of the time across summer.
Chance of precipitation in Summer
Porto Grande gets around 263 mm of rain over 59 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 7 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 12 hours in early June to 12 hours by late August. 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 4.9 kWh/m².
Hazard calendar for Porto Grande
In summer, Porto Grande overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Porto Grande's monsoon runs January–June, when most of the year's rain falls.
Is summer a good time to visit Porto Grande?
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 Porto Grande.
What to pack for Porto Grande in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Porto Grande sees daytime highs around 31°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 59 days see rain.
UV index in Porto Grande in Summer
Clear-sky midday UV across summer averages around 11 (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 Grande peaks around February 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 10 at about 11 (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) | 13 | 15 | 15 | 14 | 12 | 11 | 11 | 11 | 12 | 12 | 11 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 14 | Extreme |
| May | 12 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 11 | Extreme |
| Dec | 11 | Extreme |
Air quality in Porto Grande 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 Porto Grande is worst in February — around 20 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (July, 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) | 17 | 20 | 19 | 17 | 10 | 8 | 8 | 8 | 10 | 14 | 14 | 15 |
| Level | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 17 | Moderate |
| Feb | 20 | Moderate |
| Mar | 19 | Moderate |
| Apr | 17 | Moderate |
| May | 10 | Good |
| Jun | 8 | Good |
| Jul | 8 | Good |
| Aug | 8 | Good |
| Sep | 10 | Good |
| Oct | 14 | Moderate |
| Nov | 14 | Moderate |
| Dec | 15 | Moderate |
Where is Porto Grande?
Porto Grande sits at 0.7°N, 51.4°W, 68 m above sea level, in Brazil. The nearest listed city is Macapá, 84 km away.
Topography around Porto Grande
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Porto Grande.
Within 3 km, the terrain around Porto Grande has only modest variations in elevation — a maximum elevation change of 59 m around an average of 74 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 177 m; within 80 km, significant variations in elevation — a maximum elevation change of 440 m.
The land around Porto Grande is covered by trees (40%) and grassland (34%) within 3 km, trees (73%) and grassland (22%) within 16 km, and trees (78%) 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 Grande (0.7133°, -51.4133°, elevation 68 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.