Viamão in Spring
In spring (September, October and November), Viamão sees average daytime highs around 24°C and overnight lows near 15°C, with 438 mm of rain over about 35 wet days across the season. It is the 3rd-warmest season and the wettest season of the year.
Over the season highs climb from about 22°C in early September to 27°C by late November. The sky is clear or mostly clear about 29% of the time across spring, and the air most often feels humid.
Spring is Viamão's 2nd-best season to visit on our travel score. For the whole year in context, see Viamão's year-round climate.
- Avg daytime high
- 24°C
- 3rd-warmest season
- Avg overnight low
- 15°C
- Rainfall
- 438 mm
- 35 wet days
- Avg wind
- 12 km/h
- Travel score
- 6.4
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Viamão in Spring
Over the season highs climb from about 22°C in early September to 27°C by late November.
A typical spring day in Viamão reaches about 24°C and drops to 15°C overnight. The warmest of the three months is November, the coolest September.
Viamão weather by month
How the three spring months (September, October and November) 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° / 21° | 140 | 14.2 | 13.7 | 4.7 |
| Feb | 29° / 20° | 127 | 13.9 | 13.1 | 4.7 |
| Mar | 28° / 19° | 121 | 12.6 | 12.2 | 5.7 |
| Apr | 25° / 16° | 102 | 9.7 | 11.3 | 6.8 |
| May | 22° / 13° | 106 | 9.2 | 10.5 | 6.7 |
| Jun | 20° / 11° | 112 | 9.4 | 10.1 | 6.2 |
| Jul | 19° / 10° | 136 | 10.3 | 10.3 | 6.1 |
| Aug | 21° / 11° | 122 | 10.4 | 10.9 | 6.5 |
| Sep | 22° / 13° | 147 | 11.2 | 11.8 | 6.3 |
| Oct | 24° / 15° | 169 | 12.7 | 12.7 | 6.4 |
| Nov | 27° / 17° | 122 | 10.9 | 13.5 | 6.4 |
| Dec | 29° / 19° | 129 | 12.4 | 13.9 | 5.4 |
Cloud cover in Spring
The sky is clear or mostly clear about 29% of the time across spring.
Chance of precipitation in Spring
Viamão gets around 438 mm of rain over 35 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 12 km/h across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 24 min in early September to 13 h 48 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 5.1 kWh/m².
Is spring a good time to visit Viamão?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is a reasonable time to visit Viamão for sightseeing.
What to pack for Viamão in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Viamão sees daytime highs around 24°C and nights near 15°C. Pack sun protection. Worth having: light clothes and rain gear. About 35 days see rain.
Sea temperature near Viamão in Spring
The nearest coast averages about 20°C across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 34 km away) is warmest in February at about 26°C and coldest in July near 15°C.
It's comfortable for a long swim from Oct 23 to May 10 — about 6.6 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 | 23 | 19 | 17 | 15 | 16 | 17 | 20 | 22 | 24 |
| Comfort | Warm | Warm | Warm | Refreshing | Cool | Cool | Cool | Cool | Cool | Cool | Refreshing | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 26 | Warm |
| Feb | 26 | Warm |
| Mar | 25 | Warm |
| Apr | 23 | Refreshing |
| May | 19 | Cool |
| Jun | 17 | Cool |
| Jul | 15 | Cool |
| Aug | 16 | Cool |
| Sep | 17 | Cool |
| Oct | 20 | Cool |
| Nov | 22 | Refreshing |
| Dec | 24 | Warm |
UV index in Viamão in Spring
Clear-sky midday UV across spring 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 Viamão peaks around January 15 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (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) | 13 | 12 | 10 | 7 | 4 | 3 | 4 | 5 | 8 | 8 | 11 | 12 |
| Level | Extreme | Extreme | Very high | Very high | Moderate | Moderate | Moderate | Moderate | Very high | Very high | Extreme | Extreme |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 13 | Extreme |
| Feb | 12 | Extreme |
| Mar | 10 | Very high |
| Apr | 7 | Very high |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | Moderate |
| Sep | 8 | Very high |
| Oct | 8 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Air quality in Viamão in Spring
Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.
Air quality in Viamão is worst in August — around 27 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (December, 13 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) | 13 | 13 | 15 | 18 | 21 | 23 | 25 | 27 | 23 | 16 | 15 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 13 | Moderate |
| Feb | 13 | Moderate |
| Mar | 15 | Moderate |
| Apr | 18 | Moderate |
| May | 21 | Moderate |
| Jun | 23 | Moderate |
| Jul | 25 | Moderate |
| Aug | 27 | Moderate |
| Sep | 23 | Moderate |
| Oct | 16 | Moderate |
| Nov | 15 | Moderate |
| Dec | 13 | Moderate |
Where is Viamão?
Viamão sits at 30.1°S, 51.0°W, 108 m above sea level, in Brazil. The nearest listed city is Alvorada, 10 km away.
Topography around Viamão
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Viamão.
Within 3 km, the terrain around Viamão has only modest variations in elevation — a maximum elevation change of 101 m around an average of 70 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 310 m; within 80 km, large variations in elevation — a maximum elevation change of 941 m.
The land around Viamão is covered by trees (60%) and artificial surfaces (22%) within 3 km, trees (47%) and grassland (25%) within 16 km, and trees (38%), grassland (21%) and water (20%) 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 Viamão (-30.0811°, -51.0233°, elevation 108 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.