Guaratuba in Winter
In winter (June, July and August), Guaratuba sees average daytime highs around 21°C and overnight lows near 15°C, with 268 mm of rain over about 29 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 21°C. The sky is clear or mostly clear about 31% of the time across winter, and the air most often feels humid.
Winter is Guaratuba's best season of the year to visit on our travel score. For the whole year in context, see Guaratuba's year-round climate.
- Avg daytime high
- 21°C
- coldest season of the year
- Avg overnight low
- 15°C
- Rainfall
- 268 mm
- 29 wet days
- Avg wind
- 9 km/h
- Travel score
- 6.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Guaratuba in Winter
Across winter, daytime highs hold fairly steady around 21°C.
A typical winter day in Guaratuba reaches about 21°C and drops to 15°C overnight. The warmest of the three months is June, the coolest July.
Guaratuba 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° / 23° | 271 | 23.3 | 13.4 | 4.1 |
| Feb | 28° / 23° | 249 | 20.6 | 12.9 | 4.1 |
| Mar | 27° / 22° | 206 | 21.4 | 12.2 | 4.7 |
| Apr | 26° / 20° | 119 | 14.2 | 11.4 | 6.0 |
| May | 23° / 18° | 115 | 12.7 | 10.8 | 6.4 |
| Jun | 22° / 16° | 98 | 10.1 | 10.4 | 6.5 |
| Jul | 21° / 15° | 89 | 9.9 | 10.5 | 6.4 |
| Aug | 21° / 16° | 81 | 9.4 | 11.1 | 6.6 |
| Sep | 22° / 17° | 133 | 13.9 | 11.8 | 5.8 |
| Oct | 23° / 19° | 136 | 16.4 | 12.6 | 5.5 |
| Nov | 25° / 20° | 153 | 16.6 | 13.3 | 5.5 |
| Dec | 27° / 22° | 186 | 19.2 | 13.6 | 5.0 |
Cloud cover in Winter
The sky is clear or mostly clear about 31% of the time across winter.
Chance of precipitation in Winter
Guaratuba gets around 268 mm of rain over 29 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 9 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 30 min in early June to 11 h 24 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 2.9 kWh/m².
Is winter a good time to visit Guaratuba?
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 Guaratuba for sightseeing.
What to pack for Guaratuba in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Guaratuba sees daytime highs around 21°C and nights near 15°C. Worth packing: rain gear. About 29 days see rain.
Sea temperature near Guaratuba in Winter
The nearest coast averages about 19°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 20 km away) is warmest in February at about 27°C and coldest in August near 19°C.
It's comfortable for a long swim from Sep 20 to Jun 28 — about 9.3 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 27 | 27 | 27 | 25 | 23 | 21 | 19 | 19 | 20 | 21 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Cool | Cool | Cool | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 27 | Warm |
| Feb | 27 | Warm |
| Mar | 27 | Warm |
| Apr | 25 | Warm |
| May | 23 | Refreshing |
| Jun | 21 | Refreshing |
| Jul | 19 | Cool |
| Aug | 19 | Cool |
| Sep | 20 | Cool |
| Oct | 21 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Guaratuba in Winter
Clear-sky midday UV across winter averages around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Guaratuba peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 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 | 11 | 8 | 6 | 5 | 5 | 6 | 8 | 10 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | Moderate | High | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 13 | Extreme |
| Mar | 11 | Extreme |
| Apr | 8 | Very high |
| May | 6 | High |
| Jun | 5 | High |
| Jul | 5 | Moderate |
| Aug | 6 | High |
| Sep | 8 | Very high |
| Oct | 10 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Air quality in Guaratuba 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 Guaratuba is worst in August — around 15 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (February, 9 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) | 9 | 9 | 9 | 10 | 12 | 14 | 15 | 15 | 14 | 12 | 9 | 9 |
| Level | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 9 | Good |
| Apr | 10 | Good |
| May | 12 | Good |
| Jun | 14 | Moderate |
| Jul | 15 | Moderate |
| Aug | 15 | Moderate |
| Sep | 14 | Moderate |
| Oct | 12 | Good |
| Nov | 9 | Good |
| Dec | 9 | Good |
Where is Guaratuba?
Guaratuba sits at 25.9°S, 48.6°W, 6 m above sea level, in Brazil. The nearest listed city is Matinhos, 7.0 km away.
Topography around Guaratuba
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Guaratuba.
Within 3 km, the terrain around Guaratuba has only modest variations in elevation — a maximum elevation change of 138 m around an average of 6 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 824 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,785 m.
The land around Guaratuba is covered by water (49%) and artificial surfaces (25%) within 3 km, water (50%) and trees (38%) within 16 km, and trees (54%) and water (34%) 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 Guaratuba (-25.8828°, -48.5747°, elevation 6 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.