Porto Belo in Summer
In summer (December, January and February), Porto Belo sees average daytime highs around 27°C and overnight lows near 22°C, with 475 mm of rain over about 52 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 16% of the time across summer, and the air most often feels oppressive.
Summer is Porto Belo's weakest season of the year to visit on our travel score. For the whole year in context, see Porto Belo's year-round climate.
- Avg daytime high
- 27°C
- warmest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 475 mm
- 52 wet days
- Avg wind
- 12 km/h
- Travel score
- 5.1
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Porto Belo in Summer
Across summer, daytime highs hold fairly steady around 27°C.
A typical summer day in Porto Belo reaches about 27°C and drops to 22°C overnight. The warmest of the three months is February, the coolest December.
Porto Belo weather by month
How the three summer months (December, January and February) 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° | 186 | 19.3 | 13.5 | 4.9 |
| Feb | 28° / 23° | 164 | 17.8 | 13 | 4.8 |
| Mar | 27° / 22° | 127 | 17.6 | 12.2 | 5.4 |
| Apr | 25° / 20° | 87 | 10.9 | 11.4 | 6.6 |
| May | 23° / 17° | 107 | 10.5 | 10.7 | 6.7 |
| Jun | 21° / 15° | 94 | 9.3 | 10.3 | 6.5 |
| Jul | 20° / 14° | 86 | 9.1 | 10.5 | 6.4 |
| Aug | 21° / 15° | 87 | 9 | 11 | 6.5 |
| Sep | 21° / 16° | 131 | 12.3 | 11.8 | 6.0 |
| Oct | 23° / 18° | 119 | 13.3 | 12.7 | 6.0 |
| Nov | 25° / 20° | 113 | 14 | 13.3 | 6.1 |
| Dec | 27° / 21° | 126 | 15.1 | 13.7 | 5.6 |
Cloud cover in Summer
The sky is clear or mostly clear about 16% of the time across summer.
Chance of precipitation in Summer
Porto Belo gets around 475 mm of rain over 52 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 12 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 36 min in early December to 12 h 36 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.7 kWh/m².
Is summer a good time to visit Porto Belo?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Porto Belo for sightseeing.
What to pack for Porto Belo in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Porto Belo sees daytime highs around 27°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 52 days see rain.
Sea temperature near Porto Belo in Summer
The nearest coast averages about 26°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 18 km away) is warmest in February at about 26°C and coldest in August near 18°C.
It's comfortable for a long swim from Oct 4 to Jun 11 — about 8.3 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 26 | 26 | 26 | 24 | 22 | 20 | 18 | 18 | 19 | 21 | 23 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 26 | Warm |
| Apr | 24 | Warm |
| May | 22 | Refreshing |
| Jun | 20 | Cool |
| Jul | 18 | Cool |
| Aug | 18 | Cool |
| Sep | 19 | Cool |
| Oct | 21 | Refreshing |
| Nov | 23 | Refreshing |
| Dec | 25 | Warm |
UV index in Porto Belo in Summer
Clear-sky midday UV across summer averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Porto Belo peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 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 | 5 | 5 | 5 | 6 | 8 | 9 | 12 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | Moderate | 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 | 5 | High |
| Jun | 5 | Moderate |
| Jul | 5 | Moderate |
| Aug | 6 | High |
| Sep | 8 | Very high |
| Oct | 9 | Very high |
| Nov | 12 | Extreme |
| Dec | 13 | Extreme |
Where is Porto Belo?
Porto Belo sits at 27.2°S, 48.6°W, 3 m above sea level, in Brazil. The nearest listed city is Bombinhas, 6.0 km away.
Topography around Porto Belo
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Porto Belo.
Within 3 km, the terrain around Porto Belo has significant variations in elevation — a maximum elevation change of 330 m around an average of 56 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 665 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,273 m.
The land around Porto Belo is covered by trees (48%) and water (33%) within 3 km, water (60%) and trees (25%) within 16 km, and trees (48%) and water (39%) 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 Porto Belo (-27.1578°, -48.5531°, elevation 3 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.