Biritiba Mirim in Winter
In winter (June, July and August), Biritiba Mirim sees average daytime highs around 23°C and overnight lows near 13°C, with 139 mm of rain over about 18 wet days across the season. It is the coldest season of the year and the driest season of the year.
Across winter, daytime highs hold fairly steady around 23°C. The sky is clear or mostly clear about 45% of the time across winter, and the air most often feels comfortable.
Winter is Biritiba Mirim's best season of the year to visit on our travel score. For the whole year in context, see Biritiba Mirim's year-round climate.
- Avg daytime high
- 23°C
- coldest season of the year
- Avg overnight low
- 13°C
- Rainfall
- 139 mm
- 18 wet days
- Avg wind
- 7 km/h
- Travel score
- 7.6
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Biritiba Mirim in Winter
Across winter, daytime highs hold fairly steady around 23°C.
A typical winter day in Biritiba Mirim reaches about 23°C and drops to 13°C overnight. The warmest of the three months is August, the coolest July.
Biritiba Mirim 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 | 28° / 20° | 254 | 24.7 | 13.3 | 4.2 |
| Feb | 28° / 20° | 193 | 20.7 | 12.8 | 4.3 |
| Mar | 27° / 19° | 169 | 21.5 | 12.2 | 4.8 |
| Apr | 26° / 17° | 72 | 12 | 11.5 | 6.4 |
| May | 23° / 15° | 66 | 9 | 10.9 | 7.0 |
| Jun | 23° / 13° | 44 | 5.9 | 10.6 | 7.5 |
| Jul | 22° / 12° | 53 | 6 | 10.7 | 7.5 |
| Aug | 23° / 13° | 42 | 6 | 11.2 | 7.7 |
| Sep | 24° / 15° | 85 | 10.8 | 11.9 | 6.8 |
| Oct | 25° / 17° | 112 | 14.6 | 12.6 | 5.8 |
| Nov | 26° / 17° | 151 | 17.7 | 13.1 | 5.3 |
| Dec | 27° / 19° | 191 | 21.6 | 13.4 | 4.6 |
Cloud cover in Winter
The sky is clear or mostly clear about 45% of the time across winter.
Chance of precipitation in Winter
Biritiba Mirim gets around 139 mm of rain over 18 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 7 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 3.6 kWh/m².
Hazard calendar for Biritiba Mirim
None of Biritiba Mirim's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Biritiba Mirim's rainy season runs November–March, when most of the year's rain falls.
Is winter a good time to visit Biritiba Mirim?
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 Biritiba Mirim for general sightseeing.
What to pack for Biritiba Mirim in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Biritiba Mirim sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes. About 18 days see rain.
Sea temperature near Biritiba Mirim in Winter
The nearest coast averages about 21°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 35 km away) is warmest in February at about 27°C and coldest in August near 21°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 | 26 | 24 | 22 | 21 | 21 | 21 | 22 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 26 | Warm |
| May | 24 | Refreshing |
| Jun | 22 | Refreshing |
| Jul | 21 | Refreshing |
| Aug | 21 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Biritiba Mirim 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 Biritiba Mirim peaks around February 9 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) | 14 | 15 | 11 | 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 | 14 | Extreme |
| Feb | 15 | Extreme |
| Mar | 11 | 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 Biritiba Mirim 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 Biritiba Mirim is worst in June — around 32 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 16 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) | 16 | 17 | 19 | 21 | 27 | 32 | 31 | 28 | 28 | 20 | 16 | 16 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 16 | Moderate |
| Feb | 17 | Moderate |
| Mar | 19 | Moderate |
| Apr | 21 | Moderate |
| May | 27 | Moderate |
| Jun | 32 | Moderate |
| Jul | 31 | Moderate |
| Aug | 28 | Moderate |
| Sep | 28 | Moderate |
| Oct | 20 | Moderate |
| Nov | 16 | Moderate |
| Dec | 16 | Moderate |
Where is Biritiba Mirim?
Biritiba Mirim sits at 23.6°S, 46.0°W, 775 m above sea level, in Brazil. The nearest listed city is Mogi das Cruzes, 16 km away.
Topography around Biritiba Mirim
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Biritiba Mirim.
Within 3 km, the terrain around Biritiba Mirim has only modest variations in elevation — a maximum elevation change of 178 m around an average of 775 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 875 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,045 m.
The land around Biritiba Mirim is covered by trees (44%) and grassland (38%) within 3 km, trees (66%) and grassland (24%) within 16 km, and trees (45%) and water (27%) 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 Biritiba Mirim (-23.5725°, -46.0386°, elevation 775 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.