Viana in Summer
In summer (December, January and February), Viana sees average daytime highs around 30°C and overnight lows near 23°C, with 438 mm of rain over about 39 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs climb from about 28°C in early December to 30°C by late February. The sky is clear or mostly clear about 29% of the time across summer, and the air most often feels oppressive.
Summer is Viana's weakest season of the year to visit on our travel score. For the whole year in context, see Viana's year-round climate.
- Avg daytime high
- 30°C
- warmest season of the year
- Avg overnight low
- 23°C
- Rainfall
- 438 mm
- 39 wet days
- Avg wind
- 11 km/h
- Travel score
- 4.8
- weakest season of the year
- Months
- Dec · Jan · Feb
Temperature in Viana in Summer
Over the season highs climb from about 28°C in early December to 30°C by late February.
A typical summer day in Viana reaches about 30°C and drops to 23°C overnight. The warmest of the three months is February, the coolest December.
How summer really feels in Viana
Once humidity and wind are folded in, summer brings about 71 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Viana 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 | 30° / 23° | 138 | 12.3 | 13.1 | 4.8 |
| Feb | 30° / 23° | 94 | 10 | 12.7 | 4.8 |
| Mar | 30° / 23° | 159 | 14.6 | 12.1 | 4.6 |
| Apr | 28° / 22° | 104 | 14.5 | 11.5 | 5.5 |
| May | 26° / 20° | 63 | 10.4 | 11 | 6.7 |
| Jun | 26° / 19° | 38 | 7.7 | 10.8 | 7.3 |
| Jul | 25° / 18° | 42 | 8.2 | 10.9 | 7.5 |
| Aug | 25° / 18° | 43 | 7.8 | 11.3 | 7.4 |
| Sep | 26° / 19° | 63 | 9.8 | 11.9 | 6.8 |
| Oct | 27° / 21° | 113 | 11.9 | 12.5 | 6.2 |
| Nov | 27° / 22° | 208 | 16.1 | 13 | 5.3 |
| Dec | 29° / 23° | 206 | 16.3 | 13.2 | 4.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 29% of the time across summer.
Chance of precipitation in Summer
Viana gets around 438 mm of rain over 39 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 11 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 06 min in early December to 12 h 30 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 6.3 kWh/m².
Hazard calendar for Viana
In summer, Viana overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Viana's rainy season runs October–January, when most of the year's rain falls.
Is summer a good time to visit Viana?
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 Viana for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Viana in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Viana sees daytime highs around 30°C and nights near 23°C. Pack light clothes, rain gear and sun protection. About 39 days see rain.
Sea temperature near Viana 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 29 km away) is warmest in March at about 26°C and coldest in August near 23°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) | 25 | 26 | 26 | 26 | 25 | 24 | 23 | 23 | 23 | 23 | 24 | 25 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Refreshing | Refreshing | Refreshing | Refreshing | Refreshing | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 26 | Warm |
| Mar | 26 | Warm |
| Apr | 26 | Warm |
| May | 25 | Warm |
| Jun | 24 | Refreshing |
| Jul | 23 | Refreshing |
| Aug | 23 | Refreshing |
| Sep | 23 | Refreshing |
| Oct | 23 | Refreshing |
| Nov | 24 | Warm |
| Dec | 25 | Warm |
UV index in Viana in Summer
Clear-sky midday UV across summer averages around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Viana peaks around February 10 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 6 (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 | 12 | 10 | 7 | 6 | 6 | 8 | 10 | 12 | 13 | 13 |
| Level | Extreme | Extreme | Extreme | Very high | High | High | High | Very high | Very high | Extreme | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 14 | Extreme |
| Feb | 14 | Extreme |
| Mar | 12 | Extreme |
| Apr | 10 | Very high |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 8 | Very high |
| Sep | 10 | Very high |
| Oct | 12 | Extreme |
| Nov | 13 | Extreme |
| Dec | 13 | Extreme |
Where is Viana?
Viana sits at 20.4°S, 40.5°W, 35 m above sea level, in Brazil. The nearest listed city is Cariacica, 16 km away.
Topography around Viana
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Viana.
Within 3 km, the terrain around Viana has significant variations in elevation — a maximum elevation change of 380 m around an average of 79 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 885 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,980 m.
The land around Viana is covered by trees (48%) and grassland (48%) within 3 km, trees (61%) and grassland (31%) within 16 km, and trees (44%), water (30%) and grassland (23%) 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 Viana (-20.3903°, -40.4961°, elevation 35 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.