Oiapoque in Winter
In winter (December, January and February), Oiapoque sees average daytime highs around 29°C and overnight lows near 23°C, with 780 mm of rain over about 76 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.
Across winter, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 5% of the time across winter, and the air most often feels oppressive.
Winter is Oiapoque's 3rd-best season to visit on our travel score. For the whole year in context, see Oiapoque's year-round climate.
- Avg daytime high
- 29°C
- coldest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 780 mm
- 76 wet days
- Avg wind
- 8 km/h
- Travel score
- 3.4
- 3rd-best season
- Months
- Dec · Jan · Feb
Temperature in Oiapoque in Winter
Across winter, daytime highs hold fairly steady around 29°C.
A typical winter day in Oiapoque reaches about 29°C and drops to 23°C overnight. The warmest of the three months is December, the coolest January.
How winter really feels in Oiapoque
Once humidity and wind are folded in, winter brings about 46 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.
Oiapoque 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 | 29° / 23° | 284 | 26.9 | 11.8 | 3.4 |
| Feb | 29° / 23° | 262 | 22.8 | 11.9 | 3.5 |
| Mar | 29° / 23° | 213 | 23.6 | 12 | 3.5 |
| Apr | 29° / 23° | 271 | 25.1 | 12.1 | 3.2 |
| May | 29° / 23° | 381 | 29.1 | 12.2 | 2.9 |
| Jun | 30° / 23° | 276 | 27.3 | 12.2 | 3.0 |
| Jul | 30° / 23° | 190 | 25.1 | 12.2 | 3.4 |
| Aug | 31° / 23° | 94 | 15.6 | 12.1 | 4.0 |
| Sep | 33° / 23° | 36 | 7.1 | 12 | 4.1 |
| Oct | 33° / 23° | 41 | 8.2 | 11.9 | 3.7 |
| Nov | 32° / 23° | 106 | 16.4 | 11.8 | 3.4 |
| Dec | 30° / 23° | 234 | 26 | 11.8 | 3.2 |
Cloud cover in Winter
The sky is clear or mostly clear about 5% of the time across winter.
Chance of precipitation in Winter
Oiapoque gets around 780 mm of rain over 76 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 8 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 48 min in early December to 11 h 54 min 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 3.8 kWh/m².
Is winter a good time to visit Oiapoque?
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 Oiapoque.
What to pack for Oiapoque in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Oiapoque sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 76 days see rain.
Sea temperature near Oiapoque in Winter
The nearest coast averages about 27°C across winter — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 64 km away) is warmest in October at about 29°C and coldest in February near 27°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 28 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 28 | Warm |
| May | 28 | Warm |
| Jun | 28 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 29 | Tropical |
| Oct | 29 | Tropical |
| Nov | 29 | Tropical |
| Dec | 28 | Warm |
UV index in Oiapoque in Winter
Clear-sky midday UV across winter 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 Oiapoque peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 23 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 | 14 | 14 | 14 | 13 | 12 | 11 | 11 | 12 | 13 | 11 | 11 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 14 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 13 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 12 | Extreme |
| Oct | 13 | Extreme |
| Nov | 11 | Extreme |
| Dec | 11 | Extreme |
Air quality in Oiapoque 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 Oiapoque is worst in February — around 26 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (August, 7 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) | 22 | 26 | 25 | 23 | 15 | 9 | 7 | 7 | 8 | 10 | 11 | 18 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 22 | Moderate |
| Feb | 26 | Moderate |
| Mar | 25 | Moderate |
| Apr | 23 | Moderate |
| May | 15 | Moderate |
| Jun | 9 | Good |
| Jul | 7 | Good |
| Aug | 7 | Good |
| Sep | 8 | Good |
| Oct | 10 | Good |
| Nov | 11 | Good |
| Dec | 18 | Moderate |
Where is Oiapoque?
Oiapoque sits at 3.8°N, 51.8°W, 18 m above sea level, in Brazil. The nearest listed city is Matoury, 124 km away.
Topography around Oiapoque
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Oiapoque.
Within 3 km, the terrain around Oiapoque has only modest variations in elevation — a maximum elevation change of 97 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 124 m; within 80 km, significant variations in elevation — a maximum elevation change of 482 m.
The land around Oiapoque is covered by trees (72%) within 3 km, trees (93%) within 16 km, and trees (75%) 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 Oiapoque (3.8431°, -51.835°, elevation 18 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.