Oeiras in Winter
In winter (June, July and August), Oeiras sees average daytime highs around 34°C and overnight lows near 24°C, with 5 mm of rain over about 1 wet days across the season. It is the 2nd-warmest season and the driest season of the year.
Over the season highs climb from about 33°C in early June to 36°C by late August. The sky is clear or mostly clear about 63% of the time across winter, and the air most often feels humid.
Winter is Oeiras's best season of the year to visit on our travel score. For the whole year in context, see Oeiras's year-round climate.
- Avg daytime high
- 34°C
- 2nd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 5 mm
- 1 wet days
- Avg wind
- 15 km/h
- Travel score
- 3.9
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Oeiras in Winter
Over the season highs climb from about 33°C in early June to 36°C by late August.
A typical winter day in Oeiras reaches about 34°C and drops to 24°C overnight. The warmest of the three months is August, the coolest July.
How winter really feels in Oeiras
Once humidity and wind are folded in, winter brings about 92 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.
Oeiras weather by month
How the three winter 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 | 32° / 24° | 165 | 19.7 | 12.4 | 3.0 |
| Feb | 32° / 23° | 166 | 18.2 | 12.2 | 3.1 |
| Mar | 32° / 23° | 161 | 20.5 | 12 | 3.2 |
| Apr | 32° / 24° | 90 | 13.2 | 11.8 | 3.6 |
| May | 33° / 24° | 33 | 4.8 | 11.7 | 3.8 |
| Jun | 33° / 24° | 3 | 0.5 | 11.6 | 4.2 |
| Jul | 34° / 23° | 2 | 0.4 | 11.6 | 4.1 |
| Aug | 35° / 24° | 0 | 0.1 | 11.8 | 3.4 |
| Sep | 36° / 25° | 1 | 0.2 | 12 | 2.4 |
| Oct | 37° / 27° | 14 | 2 | 12.2 | 2.0 |
| Nov | 35° / 26° | 44 | 6.2 | 12.3 | 2.5 |
| Dec | 34° / 25° | 81 | 10.7 | 12.4 | 2.9 |
Cloud cover in Winter
The sky is clear or mostly clear about 63% of the time across winter.
Chance of precipitation in Winter
Oeiras gets around 5 mm of rain over 1 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 15 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 36 min in early June to 11 h 54 min by late August. 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 5.6 kWh/m².
Hazard calendar for Oeiras
None of Oeiras's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Oeiras's rainy season runs December–April, when most of the year's rain falls.
Is winter a good time to visit Oeiras?
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 Oeiras. The water and warmth also suit a beach or pool day.
What to pack for Oeiras in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Oeiras sees daytime highs around 34°C and nights near 24°C. Pack light clothes and sun protection.
UV index in Oeiras in Winter
Clear-sky midday UV across winter averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Oeiras peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (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 | 15 | 13 | 11 | 10 | 10 | 10 | 12 | 12 | 12 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 15 | Extreme |
| Apr | 13 | Extreme |
| May | 11 | Extreme |
| Jun | 10 | Very high |
| Jul | 10 | Very high |
| Aug | 10 | Very high |
| Sep | 12 | Extreme |
| Oct | 12 | Extreme |
| Nov | 12 | Extreme |
| Dec | 12 | Extreme |
Where is Oeiras?
Oeiras sits at 7.0°S, 42.1°W, 181 m above sea level, in Brazil. The nearest listed city is Picos, 74 km away.
Topography around Oeiras
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Oeiras.
Within 3 km, the terrain around Oeiras has only modest variations in elevation — a maximum elevation change of 114 m around an average of 196 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 173 m; within 80 km, significant variations in elevation — a maximum elevation change of 468 m.
The land around Oeiras is covered by shrubs (53%) within 3 km, shrubs (68%) and trees (24%) within 16 km, and shrubs (56%) and trees (33%) 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 Oeiras (-7.0253°, -42.1311°, elevation 181 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.