Rio do Sul in Spring

In spring (September, October and November), Rio do Sul sees average daytime highs around 23°C and overnight lows near 14°C, with 422 mm of rain over about 42 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.

Over the season highs climb from about 22°C in early September to 26°C by late November. The sky is clear or mostly clear about 16% of the time across spring, and the air most often feels comfortable.

Spring is Rio do Sul's 3rd-best season to visit on our travel score. For the whole year in context, see Rio do Sul's year-round climate.

Avg daytime high: 23°C; 3rd-warmest season
Avg overnight low: 14°C
Rainfall: 422 mm; 42 wet days
Avg wind: 7 km/h
Travel score: 5.8; 3rd-best season
Months: Sep · Oct · Nov

← Winter Rio do Sul year-round climate Summer →

Spring Summer Fall Winter

Temperature in Rio do Sul in Spring

Average highAverage lowShaded bands: 10–90% of days

Over the season highs climb from about 22°C in early September to 26°C by late November.

A typical spring day in Rio do Sul reaches about 23°C and drops to 14°C overnight. The warmest of the three months is November, the coolest September.

Rio do Sul 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	28° / 19°	184	20.4	13.5	4.7
Feb	28° / 19°	154	18.3	13	4.8
Mar	27° / 18°	105	15.2	12.2	5.6
Apr	24° / 15°	82	9.4	11.4	6.8
May	21° / 12°	105	9.1	10.7	6.5
Jun	19° / 10°	111	9.8	10.3	6.0
Jul	19° / 9°	99	10	10.5	6.0
Aug	20° / 10°	94	9.6	11	6.4
Sep	22° / 13°	151	12.4	11.8	6.0
Oct	23° / 15°	150	15.1	12.7	5.7
Nov	25° / 16°	121	14.8	13.3	5.8
Dec	27° / 18°	149	16.5	13.7	5.3

Cloud cover in Spring

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time across spring.

Chance of precipitation in Spring

Any precipitation

Rio do Sul gets around 422 mm of rain over 42 wet days across spring. The line is the day-by-day chance of measurable precipitation.

Humidity in Spring

DryComfortableHumidMuggyOppressiveMiserable

Most of spring feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

Wind in Spring

Winds average 7 km/h across spring.

Sunrise & sunset in Spring

DaylightNight

Daylight runs from about 11 h 24 min in early September to 13 h 36 min by late November. The lit band spans sunrise to sunset each day.

Solar energy in Spring

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across spring, about 4.5 kWh/m².

Planning a trip in spring

Is spring a good time to visit Rio do Sul?

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.

5.8

Sightseeing

3rd-best month of the year

4.6

Beach & pool

3rd-best month of the year

spring is a reasonable time to visit Rio do Sul for sightseeing.

What to pack for Rio do Sul in Spring

From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In spring, Rio do Sul sees daytime highs around 23°C and nights near 14°C. Pack rain gear. Worth having: light clothes and sun protection. About 42 days see rain.

rain gearlight clothessun protection

UV index in Rio do Sul in Spring

LowModerateHighVery highExtreme

Clear-sky midday UV across spring averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rio do Sul peaks around January 19 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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	14	11	8	6	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	14	Extreme
Mar	11	Extreme
Apr	8	Very high
May	6	High
Jun	5	Moderate
Jul	5	Moderate
Aug	6	High
Sep	8	Very high
Oct	9	Very high
Nov	12	Extreme
Dec	13	Extreme

Air quality in Rio do Sul in Spring

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where spring falls, not just the annual average.

Air quality in Rio do Sul is worst in September — around 15 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (December, 10 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)	10	10	10	11	13	13	14	15	15	12	10	10
Level	Good	Good	Good	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	10	Good
Feb	10	Good
Mar	10	Good
Apr	11	Good
May	13	Moderate
Jun	13	Moderate
Jul	14	Moderate
Aug	15	Moderate
Sep	15	Moderate
Oct	12	Good
Nov	10	Good
Dec	10	Good

Location & terrain

Where is Rio do Sul?

Rio do Sul sits at 27.2°S, 49.6°W, 346 m above sea level, in Brazil. The nearest listed city is Presidente Getúlio, 18 km away.

Topography around Rio do Sul

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rio do Sul.

Within 3 km, the terrain around Rio do Sul has significant variations in elevation — a maximum elevation change of 353 m around an average of 424 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 703 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,735 m.

The land around Rio do Sul is covered by trees (51%) and artificial surfaces (35%) within 3 km, trees (65%) and grassland (21%) within 16 km, and trees (80%) within 80 km.

3 km

353 m

trees 51%

16 km

703 m

trees 65%

80 km

1,735 m

trees 80%

treesgrasslandcroplandartificial surfaceswater

← Winter Rio do Sul year-round climate Summer →

Spring weather nearby: Presidente Getúlio 18 km · Ibirama 21 km · Ituporanga 23 km · Pouso Redondo 29 km · Taió 37 km · Indaial 54 km · Otacílio Costa 56 km · Timbó 57 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 Rio do Sul (-27.2142°, -49.6431°, elevation 346 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.