Cairu in Winter
In winter (June, July and August), Cairu sees average daytime highs around 26°C and overnight lows near 21°C, with 385 mm of rain over about 68 wet days across the season. It is the coldest season of the year and the 2nd-wettest season.
Across winter, daytime highs hold fairly steady around 26°C. The sky is clear or mostly clear about 30% of the time across winter, and the air most often feels muggy.
Winter is Cairu's 2nd-best season to visit on our travel score. Cairu 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 Cairu's year-round climate.
- Avg daytime high
- 26°C
- coldest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 385 mm
- 68 wet days
- Avg wind
- 12 km/h
- Travel score
- 5.0
- 2nd-best season
- Months
- Jun · Jul · Aug
Temperature in Cairu in Winter
Across winter, daytime highs hold fairly steady around 26°C.
A typical winter day in Cairu reaches about 26°C and drops to 21°C overnight. The warmest of the three months is June, the coolest August.
How winter really feels in Cairu
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.
Cairu 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 | 29° / 24° | 87 | 19.4 | 12.7 | 4.5 |
| Feb | 29° / 24° | 77 | 19.7 | 12.4 | 4.2 |
| Mar | 29° / 24° | 106 | 22.2 | 12.1 | 4.1 |
| Apr | 28° / 24° | 141 | 23.6 | 11.7 | 4.2 |
| May | 27° / 23° | 149 | 22 | 11.4 | 4.8 |
| Jun | 26° / 22° | 150 | 23.2 | 11.2 | 4.8 |
| Jul | 25° / 21° | 131 | 23.3 | 11.3 | 5.0 |
| Aug | 25° / 21° | 104 | 21.1 | 11.6 | 5.3 |
| Sep | 26° / 22° | 84 | 18.3 | 11.9 | 5.5 |
| Oct | 27° / 23° | 79 | 17.8 | 12.3 | 5.5 |
| Nov | 28° / 23° | 99 | 18 | 12.6 | 5.1 |
| Dec | 28° / 24° | 74 | 16.1 | 12.8 | 5.0 |
Cloud cover in Winter
The sky is clear or mostly clear about 30% of the time across winter.
Chance of precipitation in Winter
Cairu gets around 385 mm of rain over 68 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 12 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 18 min in early June to 11 h 42 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 4.0 kWh/m².
Is winter a good time to visit Cairu?
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 Cairu for sightseeing.
What to pack for Cairu in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Cairu sees daytime highs around 26°C and nights near 21°C. Pack rain gear. Worth having: light clothes. About 68 days see rain.
Sea temperature near Cairu 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 22 km away) is warmest in March at about 28°C and coldest in August near 25°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 | 28 | 28 | 27 | 26 | 26 | 25 | 26 | 26 | 27 | 27 |
| Comfort | Warm | Tropical | Tropical | Tropical | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Warm |
| Feb | 28 | Tropical |
| Mar | 28 | Tropical |
| Apr | 28 | Tropical |
| May | 27 | Warm |
| Jun | 26 | Warm |
| Jul | 26 | Warm |
| Aug | 25 | Warm |
| Sep | 26 | Warm |
| Oct | 26 | Warm |
| Nov | 27 | Warm |
| Dec | 27 | Warm |
UV index in Cairu in Winter
Clear-sky midday UV across winter averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Cairu peaks around February 19 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 8 (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) | 13 | 15 | 14 | 12 | 9 | 8 | 8 | 10 | 11 | 13 | 13 | 12 |
| Level | Extreme | Extreme | Extreme | Extreme | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 15 | Extreme |
| Mar | 14 | Extreme |
| Apr | 12 | Extreme |
| May | 9 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 10 | Very high |
| Sep | 11 | Extreme |
| Oct | 13 | Extreme |
| Nov | 13 | Extreme |
| Dec | 12 | Extreme |
Where is Cairu?
Cairu sits at 13.5°S, 39.0°W, 17 m above sea level, in Brazil. The nearest listed city is Taperoá, 8.0 km away.
Topography around Cairu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cairu.
Within 3 km, the terrain around Cairu has only modest variations in elevation — a maximum elevation change of 55 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 212 m; within 80 km, large variations in elevation — a maximum elevation change of 898 m.
The land around Cairu is covered by mangroves (33%), trees (32%) and water (31%) within 3 km, trees (59%) within 16 km, and trees (48%) 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 Cairu (-13.4869°, -39.0439°, elevation 17 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.