Porto Grande in Winter
In winter (December, January and February), Porto Grande sees average daytime highs around 31°C and overnight lows near 23°C, with 535 mm of rain over about 72 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 33°C in early December to 29°C by late February. The sky is clear or mostly clear about 7% of the time across winter, and the air most often feels oppressive.
Winter is Porto Grande's 3rd-best season to visit on our travel score. For the whole year in context, see Porto Grande's year-round climate.
- Avg daytime high
- 31°C
- 3rd-warmest season
- Avg overnight low
- 23°C
- Rainfall
- 535 mm
- 72 wet days
- Avg wind
- 9 km/h
- Travel score
- 3.0
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Porto Grande in Winter
Over the season highs ease from about 33°C in early December to 29°C by late February.
A typical winter day in Porto Grande reaches about 31°C and drops to 23°C overnight. The warmest of the three months is December, the coolest February.
How winter really feels in Porto Grande
Once humidity and wind are folded in, winter brings about 90 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.
Porto Grande weather by month
How the three winter months (December, January and February) 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 Winter
The sky is clear or mostly clear about 7% of the time across winter.
Chance of precipitation in Winter
Porto Grande gets around 535 mm of rain over 72 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels oppressive — 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 12 hours in early December to 12 hours by late February. 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 4.1 kWh/m².
Hazard calendar for Porto Grande
In winter, 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 winter a good time to visit Porto Grande?
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 weaker month for outdoor sightseeing in Porto Grande.
What to pack for Porto Grande in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Porto Grande sees daytime highs around 31°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 72 days see rain.
UV index in Porto Grande in Winter
Clear-sky midday UV across winter 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 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 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 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.