Caieiras in Winter
In winter (June, July and August), Caieiras sees average daytime highs around 23°C and overnight lows near 12°C, with 135 mm of rain over about 15 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs climb from about 22°C in early June to 25°C by late August. The sky is clear or mostly clear about 51% of the time across winter, and the air most often feels dry.
Winter is Caieiras's best season of the year to visit on our travel score. For the whole year in context, see Caieiras's year-round climate.
- Avg daytime high
- 23°C
- coldest season of the year
- Avg overnight low
- 12°C
- Rainfall
- 135 mm
- 15 wet days
- Avg wind
- 10 km/h
- Travel score
- 7.8
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Caieiras in Winter
Over the season highs climb from about 22°C in early June to 25°C by late August.
A typical winter day in Caieiras reaches about 23°C and drops to 12°C overnight. The warmest of the three months is August, the coolest July.
Caieiras 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 | 27° / 19° | 267 | 23.2 | 13.3 | 4.4 |
| Feb | 28° / 19° | 195 | 20 | 12.8 | 4.5 |
| Mar | 27° / 18° | 161 | 18.8 | 12.2 | 5.2 |
| Apr | 26° / 16° | 73 | 9.7 | 11.5 | 6.8 |
| May | 23° / 14° | 66 | 7.3 | 10.9 | 7.3 |
| Jun | 22° / 12° | 49 | 5.3 | 10.6 | 7.7 |
| Jul | 22° / 12° | 49 | 4.6 | 10.7 | 7.8 |
| Aug | 24° / 12° | 37 | 4.8 | 11.2 | 8.0 |
| Sep | 25° / 14° | 91 | 9.1 | 11.9 | 7.0 |
| Oct | 26° / 16° | 132 | 14.4 | 12.5 | 5.9 |
| Nov | 26° / 17° | 169 | 16.3 | 13.1 | 5.5 |
| Dec | 27° / 18° | 210 | 20.6 | 13.4 | 4.8 |
Cloud cover in Winter
The sky is clear or mostly clear about 51% of the time across winter.
Chance of precipitation in Winter
Caieiras gets around 135 mm of rain over 15 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 10 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 42 min in early June to 11 h 30 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 3.9 kWh/m².
Hazard calendar for Caieiras
None of Caieiras's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Caieiras's rainy season runs October–March, when most of the year's rain falls.
Is winter a good time to visit Caieiras?
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 one of the better times to visit Caieiras for general sightseeing.
What to pack for Caieiras in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Caieiras sees daytime highs around 23°C and nights near 12°C. Worth packing: light clothes and sun protection. About 15 days see rain.
UV index in Caieiras in Winter
Clear-sky midday UV across winter averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Caieiras peaks around January 21 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (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) | 15 | 15 | 12 | 9 | 7 | 6 | 5 | 8 | 8 | 11 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 15 | Extreme |
| Feb | 15 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | High |
| Aug | 8 | Very high |
| Sep | 8 | Very high |
| Oct | 11 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in Caieiras 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 Caieiras is worst in June — around 71 µg/m³ PM2.5 (unhealthy), about 2.3× the cleanest month (December, 31 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) | 32 | 34 | 41 | 48 | 62 | 71 | 70 | 60 | 53 | 39 | 32 | 31 |
| Level | Moderate | Moderate | Poor | Poor | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 32 | Moderate |
| Feb | 34 | Moderate |
| Mar | 41 | Poor |
| Apr | 48 | Poor |
| May | 62 | Unhealthy |
| Jun | 71 | Unhealthy |
| Jul | 70 | Unhealthy |
| Aug | 60 | Unhealthy |
| Sep | 53 | Poor |
| Oct | 39 | Poor |
| Nov | 32 | Moderate |
| Dec | 31 | Moderate |
Where is Caieiras?
Caieiras sits at 23.4°S, 46.7°W, 793 m above sea level, in Brazil. The nearest listed city is Perus, 5.0 km away.
Topography around Caieiras
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Caieiras.
Within 3 km, the terrain around Caieiras has only modest variations in elevation — a maximum elevation change of 247 m around an average of 779 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 570 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,708 m.
The land around Caieiras is covered by trees (61%) and artificial surfaces (23%) within 3 km, trees (64%) and artificial surfaces (21%) within 16 km, and trees (56%) and grassland (22%) 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 Caieiras (-23.3642°, -46.7406°, elevation 793 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.