Biguaçu in Summer
In summer (December, January and February), Biguaçu sees average daytime highs around 28°C and overnight lows near 20°C, with 614 mm of rain over about 62 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 28°C. The sky is clear or mostly clear about 11% of the time across summer, and the air most often feels muggy.
Summer is Biguaçu's weakest season of the year to visit on our travel score. For the whole year in context, see Biguaçu's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 614 mm
- 62 wet days
- Avg wind
- 7 km/h
- Travel score
- 4.6
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Biguaçu in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Biguaçu reaches about 28°C and drops to 20°C overnight. The warmest of the three months is January, the coolest December.
Biguaçu 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° / 20° | 234 | 22.6 | 13.5 | 4.4 |
| Feb | 28° / 20° | 213 | 20.3 | 13 | 4.4 |
| Mar | 27° / 19° | 149 | 19.6 | 12.2 | 5.0 |
| Apr | 25° / 17° | 95 | 12.2 | 11.4 | 6.4 |
| May | 22° / 14° | 113 | 10.8 | 10.7 | 6.6 |
| Jun | 21° / 12° | 96 | 9.6 | 10.3 | 6.4 |
| Jul | 20° / 11° | 89 | 9.5 | 10.4 | 6.4 |
| Aug | 21° / 12° | 90 | 9.3 | 11 | 6.6 |
| Sep | 22° / 14° | 150 | 13.5 | 11.8 | 5.8 |
| Oct | 23° / 16° | 143 | 15.5 | 12.7 | 5.6 |
| Nov | 25° / 17° | 147 | 16.6 | 13.4 | 5.5 |
| Dec | 27° / 19° | 167 | 18.9 | 13.7 | 5.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 11% of the time across summer.
Chance of precipitation in Summer
Biguaçu gets around 614 mm of rain over 62 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 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 5.4 kWh/m².
Is summer a good time to visit Biguaçu?
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 Biguaçu for sightseeing.
What to pack for Biguaçu in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Biguaçu sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 62 days see rain.
Sea temperature near Biguaçu in Summer
The nearest coast averages about 25°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 31 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 6 to Jun 10 — about 8.2 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 | 25 | 24 | 22 | 20 | 18 | 18 | 19 | 21 | 23 | 24 |
| Comfort | Warm | Warm | Warm | Warm | Refreshing | Cool | Cool | Cool | Cool | Refreshing | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 25 | 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 | 24 | Warm |
UV index in Biguaçu 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 Biguaçu peaks around January 18 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 Biguaçu?
Biguaçu sits at 27.5°S, 48.7°W, 6 m above sea level, in Brazil. The nearest listed city is Campinas, 12 km away.
Topography around Biguaçu
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Biguaçu.
Within 3 km, the terrain around Biguaçu has significant variations in elevation — a maximum elevation change of 394 m around an average of 48 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 595 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,813 m.
The land around Biguaçu is covered by trees (37%), artificial surfaces (21%) and water (21%) within 3 km, trees (47%) and water (26%) within 16 km, and trees (52%) and water (35%) 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 Biguaçu (-27.4942°, -48.6556°, 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.