Rio Bonito in Winter
In winter (June, July and August), Rio Bonito sees average daytime highs around 25°C and overnight lows near 18°C, with 135 mm of rain over about 23 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 25°C. The sky is clear or mostly clear about 52% of the time across winter, and the air most often feels humid.
Winter is Rio Bonito's best season of the year to visit on our travel score. For the whole year in context, see Rio Bonito's year-round climate.
- Avg daytime high
- 25°C
- coldest season of the year
- Avg overnight low
- 18°C
- Rainfall
- 135 mm
- 23 wet days
- Avg wind
- 8 km/h
- Travel score
- 7.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Rio Bonito in Winter
Across winter, daytime highs hold fairly steady around 25°C.
A typical winter day in Rio Bonito reaches about 25°C and drops to 18°C overnight. The warmest of the three months is June, the coolest July.
How winter really feels in Rio Bonito
Once humidity and wind are folded in, winter brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
winter sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Rio Bonito 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 | 30° / 23° | 237 | 18.7 | 13.2 | 4.0 |
| Feb | 30° / 23° | 173 | 14.9 | 12.8 | 4.2 |
| Mar | 29° / 23° | 211 | 20.1 | 12.2 | 4.2 |
| Apr | 28° / 21° | 110 | 14.3 | 11.5 | 5.7 |
| May | 26° / 19° | 83 | 11.7 | 10.9 | 6.6 |
| Jun | 25° / 18° | 46 | 7.2 | 10.6 | 7.5 |
| Jul | 25° / 18° | 44 | 7.6 | 10.7 | 7.6 |
| Aug | 25° / 18° | 44 | 7.9 | 11.2 | 7.5 |
| Sep | 26° / 19° | 81 | 10.7 | 11.9 | 6.7 |
| Oct | 26° / 20° | 108 | 12.5 | 12.5 | 6.1 |
| Nov | 27° / 21° | 205 | 18 | 13.1 | 5.1 |
| Dec | 29° / 23° | 243 | 19.8 | 13.4 | 4.4 |
Cloud cover in Winter
The sky is clear or mostly clear about 52% of the time across winter.
Chance of precipitation in Winter
Rio Bonito gets around 135 mm of rain over 23 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 8 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 3.8 kWh/m².
Hazard calendar for Rio Bonito
None of Rio Bonito's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
Rio Bonito's rainy season runs November–April, when most of the year's rain falls.
Is winter a good time to visit Rio Bonito?
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 Rio Bonito for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Rio Bonito in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Rio Bonito sees daytime highs around 25°C and nights near 18°C. Worth packing: light clothes. About 23 days see rain.
Sea temperature near Rio Bonito in Winter
The nearest coast averages about 22°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 46 km away) is warmest in March at about 26°C and coldest in September 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) | 25 | 25 | 26 | 25 | 24 | 23 | 22 | 22 | 21 | 22 | 23 | 24 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 25 | Warm |
| Mar | 26 | Warm |
| Apr | 25 | Warm |
| May | 24 | Refreshing |
| Jun | 23 | Refreshing |
| Jul | 22 | Refreshing |
| Aug | 22 | Refreshing |
| Sep | 21 | Refreshing |
| Oct | 22 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 24 | Warm |
UV index in Rio Bonito 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 Rio Bonito peaks around January 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 5 (moderate).
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 | 13 | 12 | 9 | 7 | 6 | 5 | 8 | 7 | 12 | 13 | 14 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | Very high | High | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 12 | Extreme |
| Apr | 9 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 5 | Moderate |
| Aug | 8 | Very high |
| Sep | 7 | High |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 14 | Extreme |
Air quality in Rio Bonito 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 Rio Bonito is worst in September — around 19 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (March, 10 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) | 11 | 11 | 10 | 12 | 15 | 16 | 15 | 15 | 19 | 13 | 11 | 10 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 11 | Good |
| Mar | 10 | Good |
| Apr | 12 | Good |
| May | 15 | Moderate |
| Jun | 16 | Moderate |
| Jul | 15 | Moderate |
| Aug | 15 | Moderate |
| Sep | 19 | Moderate |
| Oct | 13 | Moderate |
| Nov | 11 | Good |
| Dec | 10 | Good |
Where is Rio Bonito?
Rio Bonito sits at 22.7°S, 42.6°W, 67 m above sea level, in Brazil. The nearest listed city is Tanguá, 11 km away.
Topography around Rio Bonito
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rio Bonito.
Within 3 km, the terrain around Rio Bonito has large variations in elevation — a maximum elevation change of 765 m around an average of 161 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 932 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,252 m.
The land around Rio Bonito is covered by trees (64%) and grassland (23%) within 3 km, trees (60%) and grassland (38%) within 16 km, and trees (41%), water (31%) 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 Rio Bonito (-22.7086°, -42.6097°, elevation 67 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.