Rio Formoso in Winter
In winter (June, July and August), Rio Formoso sees average daytime highs around 27°C and overnight lows near 21°C, with 342 mm of rain over about 72 wet days across the season. It is the coldest season of the year and the wettest season of the year.
Across winter, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 20% of the time across winter, and the air most often feels muggy.
Winter is Rio Formoso's 2nd-best season to visit on our travel score. Rio Formoso has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Rio Formoso's year-round climate.
- Avg daytime high
- 27°C
- coldest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 342 mm
- 72 wet days
- Avg wind
- 10 km/h
- Travel score
- 4.5
- 2nd-best season
- Months
- Jun · Jul · Aug
Temperature in Rio Formoso in Winter
Across winter, daytime highs hold fairly steady around 27°C.
A typical winter day in Rio Formoso reaches about 27°C and drops to 21°C overnight. The warmest of the three months is June, the coolest August.
How winter really feels in Rio Formoso
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 Formoso 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° / 24° | 56 | 17.3 | 12.4 | 4.1 |
| Feb | 31° / 24° | 61 | 16.9 | 12.3 | 3.8 |
| Mar | 31° / 24° | 80 | 19.5 | 12.1 | 3.8 |
| Apr | 30° / 24° | 94 | 21 | 11.8 | 3.8 |
| May | 29° / 23° | 123 | 24.1 | 11.6 | 3.9 |
| Jun | 27° / 22° | 141 | 24.7 | 11.5 | 4.3 |
| Jul | 27° / 21° | 123 | 24.8 | 11.5 | 4.5 |
| Aug | 27° / 21° | 78 | 22.2 | 11.7 | 4.8 |
| Sep | 28° / 21° | 54 | 17.5 | 11.9 | 5.3 |
| Oct | 29° / 22° | 38 | 14.7 | 12.2 | 5.1 |
| Nov | 30° / 23° | 30 | 11.5 | 12.4 | 5.0 |
| Dec | 30° / 23° | 32 | 12.5 | 12.5 | 4.6 |
Cloud cover in Winter
The sky is clear or mostly clear about 20% of the time across winter.
Chance of precipitation in Winter
Rio Formoso gets around 342 mm of rain over 72 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — 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 11 h 30 min in early June to 11 h 48 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 4.1 kWh/m².
Hazard calendar for Rio Formoso
In winter, Rio Formoso overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Rio Formoso's rainy season runs March–August, when most of the year's rain falls.
Is winter a good time to visit Rio Formoso?
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 reasonable time to visit Rio Formoso for sightseeing.
What to pack for Rio Formoso in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Rio Formoso sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 72 days see rain.
Sea temperature near Rio Formoso in Winter
The nearest coast averages about 26°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 23 km away) is warmest in April at about 29°C and coldest in August near 26°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) | 28 | 28 | 29 | 29 | 28 | 27 | 26 | 26 | 26 | 27 | 27 | 27 |
| Comfort | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 29 | Tropical |
| Apr | 29 | Tropical |
| May | 28 | Tropical |
| Jun | 27 | Warm |
| Jul | 26 | Warm |
| Aug | 26 | Warm |
| Sep | 26 | Warm |
| Oct | 27 | Warm |
| Nov | 27 | Warm |
| Dec | 27 | Warm |
UV index in Rio Formoso 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 Rio Formoso peaks around March 14 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 | 14 | 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 | 14 | 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 Rio Formoso?
Rio Formoso sits at 8.7°S, 35.2°W, 87 m above sea level, in Brazil. The nearest listed city is Sirinhaém, 10 km away.
Topography around Rio Formoso
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rio Formoso.
Within 3 km, the terrain around Rio Formoso has only modest variations in elevation — a maximum elevation change of 138 m around an average of 70 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 179 m; within 80 km, large variations in elevation — a maximum elevation change of 859 m.
The land around Rio Formoso is covered by trees (55%) and grassland (35%) within 3 km, trees (36%) and grassland (32%) within 16 km, and grassland (43%) and water (32%) 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 Formoso (-8.6688°, -35.1628°, elevation 87 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.