Climate and average weather in Rosário do Sul
In Rosário do Sul, the summers are humid, hot, showery, and partly cloudy and the winters are mild and partly cloudy.
Over the course of the year, the temperature in Rosário do Sul typically varies from 9°C to 31°C, and is rarely below 2°C or above 36°C. January is the hottest month of the year, while July is the coldest.
Based on the travel score, the best time of year to visit Rosário do Sul for warm-weather activities is from mid March to early December.
- Hottest
- Jan
- 31°
- Coldest
- Jul
- 9°
- Wettest
- Oct
- 189 mm
- Driest
- May
- 114 mm
- Rain / yr
- 1630 mm
- 115 wet days
- Daylight
- 10.0–14.0 h
- shortest–longest
- Elevation
- 123 m
- 30.3°S
- Clearest
- Nov
- 50% cloud
Rosário do Sul weather by month, at a glance
The whole year in one picture — sky, rain, humidity, temperature and travel score. Click any band to jump to its full chart.
Each stripe is one measure across the whole year, stacked so a single day reads top to bottom. The sky band runs overcast grey on top down to clear blue at the base — more blue means sunnier — followed by the rainfall curve, the humidity band, a temperature strip that tints each stretch of the year by how warm its average high is, and the travel-score line at the foot. Scan straight down any date to read that day across every measure at once; the score climbs highest around mid March to early December.
Temperature through the year
Daily average highs and lows in Rosário do Sul, from 1991–2020 of climate data. The shaded bands show the range most days fall in — 10th to 90th percentile.
The hot season lasts 4.2 months, from November 18 to March 24, with daily high temperatures above 28°C. The hottest month of the year in Rosário do Sul is January, with an average high of 31°C and low of 20°C.
The cool season lasts 2.9 months, from May 20 to August 16, with daily high temperatures below 21°C. The coldest month of the year in Rosário do Sul is July, with an average low of 9°C and high of 18°C.
Days typically run about 10°C warmer than nights year-round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 30 | 29 | 25 | 21 | 19 | 18 | 21 | 22 | 25 | 28 | 30 |
| Avg low (°C) | 20 | 20 | 18 | 15 | 12 | 10 | 9 | 10 | 12 | 14 | 16 | 19 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| Jan | 31 | 20 |
| Feb | 30 | 20 |
| Mar | 29 | 18 |
| Apr | 25 | 15 |
| May | 21 | 12 |
| Jun | 19 | 10 |
| Jul | 18 | 9 |
| Aug | 21 | 10 |
| Sep | 22 | 12 |
| Oct | 25 | 14 |
| Nov | 28 | 16 |
| Dec | 30 | 19 |
How hot and cold Rosário do Sul really feels
The felt-temperature range through the year — heat index on the day's high (summer humidity), wind chill on the night's low (winter wind). The dashed lines are the plain thermometer; the gap is how much hotter or colder it really feels.
On the hottest afternoons, once humidity is folded in, Rosário do Sul feels like about 32°C (around January 10). About 13 days a year carry some heat stress, peaking in January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feels-like high (°C) | 32 | 31 | 29 | 25 | 21 | 19 | 18 | 21 | 22 | 25 | 28 | 30 |
| Air high (°C) | 31 | 30 | 29 | 25 | 21 | 19 | 18 | 21 | 22 | 25 | 28 | 30 |
| Feels-like low (°C) | 20 | 20 | 18 | 15 | 12 | 9 | 7 | 9 | 12 | 14 | 16 | 19 |
| Air low (°C) | 20 | 20 | 18 | 15 | 12 | 10 | 9 | 10 | 12 | 14 | 16 | 19 |
| Feels-like high (°C) | Air high (°C) | Feels-like low (°C) | Air low (°C) | |
|---|---|---|---|---|
| Jan | 32 | 31 | 20 | 20 |
| Feb | 31 | 30 | 20 | 20 |
| Mar | 29 | 29 | 18 | 18 |
| Apr | 25 | 25 | 15 | 15 |
| May | 21 | 21 | 12 | 12 |
| Jun | 19 | 19 | 9 | 10 |
| Jul | 18 | 18 | 7 | 9 |
| Aug | 21 | 21 | 9 | 10 |
| Sep | 22 | 22 | 12 | 12 |
| Oct | 25 | 25 | 14 | 14 |
| Nov | 28 | 28 | 16 | 16 |
| Dec | 30 | 30 | 19 | 19 |
Average hourly temperature in Rosário do Sul
A compact picture of the whole year, hour by hour: each column is a day, each row an hour, and the color is the modeled average temperature. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
Read left to right for the day of the year and top to bottom for the hour of the day; the color is the modeled temperature, cool blues through to hot reds on the same scale as the other charts. A vertical slice is a single day's swing — coolest just before dawn, warmest in the mid-afternoon — while a horizontal slice follows one hour across the seasons. The darker overlay marks night and the lighter one the twilight around sunrise and sunset. Colors run warmest on January afternoons, near 31°C, and coldest before dawn in July, near 9°C.
Rosário do Sul weather by month
Every month at a glance. Click a month for its detailed page.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 20° | 134 | 11.5 | 13.7 | 4.5 |
| Feb | 30° / 20° | 129 | 10.3 | 13.1 | 4.9 |
| Mar | 29° / 18° | 122 | 9 | 12.2 | 5.9 |
| Apr | 25° / 15° | 151 | 9.3 | 11.3 | 7.0 |
| May | 21° / 12° | 114 | 8.7 | 10.5 | 6.7 |
| Jun | 19° / 10° | 130 | 9.4 | 10.1 | 6.1 |
| Jul | 18° / 9° | 129 | 9.4 | 10.2 | 6.2 |
| Aug | 21° / 10° | 116 | 8.6 | 10.9 | 6.8 |
| Sep | 22° / 12° | 155 | 9.9 | 11.8 | 6.7 |
| Oct | 25° / 14° | 189 | 11 | 12.7 | 6.7 |
| Nov | 28° / 16° | 129 | 8.5 | 13.5 | 6.5 |
| Dec | 30° / 19° | 132 | 9.2 | 13.9 | 5.1 |
Chance of rain
How likely it is to rain on a typical day, and how that shifts across the wetter and drier seasons.
Rosário do Sul gets about 1630 mm of precipitation a year. On a typical day the chance of rain is often wet, but that rises and falls sharply with the seasons.
The wetter season lasts 2.6 months, from around Dec 22 to Mar 10, peaking in February at about 38% chance on a given day. The drier stretch runs the rest of the year, bottoming out around Aug 11.
October is the wettest month by volume, with 189 mm over about 11 wet days; May is the driest, with 114 mm.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain on a day (%) | 37 | 37 | 30 | 30 | 28 | 31 | 30 | 28 | 33 | 35 | 29 | 30 |
| Rain days | 12 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 9 | 9 |
| Rain on a day (%) | Rain days | |
|---|---|---|
| Jan | 37 | 12 |
| Feb | 37 | 10 |
| Mar | 30 | 9 |
| Apr | 30 | 9 |
| May | 28 | 9 |
| Jun | 31 | 9 |
| Jul | 30 | 9 |
| Aug | 28 | 9 |
| Sep | 33 | 10 |
| Oct | 35 | 11 |
| Nov | 29 | 9 |
| Dec | 30 | 9 |
Monthly rainfall
Over a full year, Rosário do Sul collects about 1630 mm of rain across 115 wet days — roughly 136 mm in an average month.
It doesn’t fall evenly. October is the wettest month with 189 mm, while May is the driest at just 114 mm. The three wettest months alone bring about 30% of the year’s total.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rainfall (mm) | 134 | 129 | 122 | 151 | 114 | 130 | 129 | 116 | 155 | 189 | 129 | 132 |
| Rain days | 12 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 9 | 9 |
| Rainfall (mm) | Rain days | |
|---|---|---|
| Jan | 134 | 12 |
| Feb | 129 | 10 |
| Mar | 122 | 9 |
| Apr | 151 | 9 |
| May | 114 | 9 |
| Jun | 130 | 9 |
| Jul | 129 | 9 |
| Aug | 116 | 9 |
| Sep | 155 | 10 |
| Oct | 189 | 11 |
| Nov | 129 | 9 |
| Dec | 132 | 9 |
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast.
In Rosário do Sul, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.
The clearer part of the year begins around November 6 and lasts for 5.7 months, ending around April 27. The clearest month is January, when the sky is clear, mostly clear, or partly cloudy 58% of the time on average.
The cloudier part of the year begins around August 31 and lasts for 2.2 months, ending around November 5. The cloudiest month is June, when it is overcast or mostly cloudy 56% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 58 | 56 | 57 | 53 | 45 | 44 | 49 | 53 | 47 | 44 | 56 | 57 |
| Cloudier (%) | 42 | 44 | 43 | 47 | 55 | 56 | 51 | 47 | 53 | 56 | 44 | 43 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| Jan | 58 | 42 |
| Feb | 56 | 44 |
| Mar | 57 | 43 |
| Apr | 53 | 47 |
| May | 45 | 55 |
| Jun | 44 | 56 |
| Jul | 49 | 51 |
| Aug | 53 | 47 |
| Sep | 47 | 53 |
| Oct | 44 | 56 |
| Nov | 56 | 44 |
| Dec | 57 | 43 |
Daylight, sunrise and sunset
Hours of daylight through the year, with sunrise and sunset times.
The gold band is daylight — sunrise runs along its lower edge, sunset along the upper — so it widens toward summer and pinches toward winter, with night the dark area above and below. The longest day, around December 19, brings about 14 hours of light; the shortest, around June 20, only 10 hours — a swing of roughly 4 hours.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.7 | 13.1 | 12.2 | 11.3 | 10.5 | 10.1 | 10.2 | 10.9 | 11.8 | 12.7 | 13.5 | 13.9 |
| Sunrise (AM) | 6:56 | 7:22 | 7:42 | 8:02 | 8:22 | 8:38 | 8:39 | 8:17 | 7:39 | 7:02 | 6:38 | 6:38 |
| Sunset (PM) | 8:42 | 8:27 | 7:56 | 7:18 | 6:50 | 6:42 | 6:52 | 7:11 | 7:29 | 7:47 | 8:11 | 8:34 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| Jan | 13.7 | 6:56 | 8:42 |
| Feb | 13.1 | 7:22 | 8:27 |
| Mar | 12.2 | 7:42 | 7:56 |
| Apr | 11.3 | 8:02 | 7:18 |
| May | 10.5 | 8:22 | 6:50 |
| Jun | 10.1 | 8:38 | 6:42 |
| Jul | 10.2 | 8:39 | 6:52 |
| Aug | 10.9 | 8:17 | 7:11 |
| Sep | 11.8 | 7:39 | 7:29 |
| Oct | 12.7 | 7:02 | 7:47 |
| Nov | 13.5 | 6:38 | 8:11 |
| Dec | 13.9 | 6:38 | 8:34 |
Sunny days
How many genuinely sunny days each month brings — days the sky stays clear or mostly clear — banded into plain-language zones.
Rosário do Sul averages about 12 sunny days a month — counting the days the sky stays clear or mostly clear — with a clear seasonal swing between 9 and 14 days.
The sunnier stretch runs 6.0 months, from around Oct 30 to Apr 29. The sunniest month is November, with roughly 13 sunny days (mixed).
The greyest month is June, down near 10 sunny days — about 27% fewer than the November peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunny days | 13 | 11 | 13 | 12 | 10 | 10 | 12 | 13 | 11 | 11 | 13 | 14 |
| Sky | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed | Mixed |
| Sunny days | Sky | |
|---|---|---|
| Jan | 13 | Mixed |
| Feb | 11 | Mixed |
| Mar | 13 | Mixed |
| Apr | 12 | Mixed |
| May | 10 | Mixed |
| Jun | 10 | Mixed |
| Jul | 12 | Mixed |
| Aug | 13 | Mixed |
| Sep | 11 | Mixed |
| Oct | 11 | Mixed |
| Nov | 13 | Mixed |
| Dec | 14 | Mixed |
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Humidity comfort is graded by the dew point — the temperature at which the air would be fully saturated — because it tracks how muggy it actually feels far better than relative humidity does. A low dew point feels dry and crisp; a high one feels sticky and oppressive no matter the reading on a humidity gauge.
In Rosário do Sul, how humid it feels changes dramatically over the year.
The more humid part of the year lasts 5.8 months, from around October 25 to April 19. The muggiest month is January, when the air feels humid, muggy or worse about 83% of the time.
The most comfortable stretch runs from around April 20 to October 24, and July is the most comfortable month — the air is dry or comfortable 89% of the time.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 6 | 5 | 9 | 29 | 52 | 64 | 70 | 64 | 54 | 35 | 25 | 14 |
| Comfortable (%) | 11 | 13 | 17 | 22 | 22 | 19 | 19 | 22 | 23 | 26 | 27 | 21 |
| Humid (%) | 25 | 21 | 28 | 24 | 18 | 14 | 10 | 13 | 18 | 24 | 24 | 26 |
| Muggy (%) | 33 | 35 | 32 | 21 | 7 | 3 | 1 | 1 | 5 | 14 | 20 | 27 |
| Oppressive (%) | 25 | 25 | 13 | 4 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 12 |
| Miserable (%) | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|---|---|---|
| Jan | 6 | 11 | 25 | 33 | 25 | 1 |
| Feb | 5 | 13 | 21 | 35 | 25 | 1 |
| Mar | 9 | 17 | 28 | 32 | 13 | 0 |
| Apr | 29 | 22 | 24 | 21 | 4 | 0 |
| May | 52 | 22 | 18 | 7 | 0 | 0 |
| Jun | 64 | 19 | 14 | 3 | 0 | 0 |
| Jul | 70 | 19 | 10 | 1 | 0 | 0 |
| Aug | 64 | 22 | 13 | 1 | 0 | 0 |
| Sep | 54 | 23 | 18 | 5 | 0 | 0 |
| Oct | 35 | 26 | 24 | 14 | 1 | 0 |
| Nov | 25 | 27 | 24 | 20 | 3 | 0 |
| Dec | 14 | 21 | 26 | 27 | 12 | 1 |
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Wind in Rosário do Sul is steady company: average speeds sit near 13 km/h — light breeze — in every month of the year, with no meaningful windy or calm season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 14 | 14 | 13 |
| Feels | light breeze | light breeze | light breeze | light breeze | calm | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 13 | light breeze |
| Feb | 12 | light breeze |
| Mar | 12 | light breeze |
| Apr | 12 | light breeze |
| May | 12 | calm |
| Jun | 12 | light breeze |
| Jul | 13 | light breeze |
| Aug | 14 | light breeze |
| Sep | 14 | light breeze |
| Oct | 14 | light breeze |
| Nov | 14 | light breeze |
| Dec | 13 | light breeze |
Best time to visit Rosário do Sul
To characterize how pleasant the weather is in Rosário do Sul throughout the year, we compute two travel scores — one for general sightseeing, one for beach and pool weather.
Around late November, Rosário do Sul is still near the tail of its best-weather window — great conditions with the peak-season crowds already thinning.
Inferred from the travel-score curve; month-by-month visitor numbers are a planned addition.
The travel score favors clear, rainless days with daytime highs between 18°C and 28°C. Based on this score, the best time of year to visit Rosário do Sul for general outdoor tourist activities is from mid March to early December, with a peak score in the last week of April.
The travel score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Travel score (0–10) | 4.5 | 4.9 | 5.9 | 7.0 | 6.7 | 6.1 | 6.2 | 6.7 | 6.7 | 6.7 | 6.4 | 5.1 |
| Rating | fair | fair | good | good | good | good | good | good | good | good | good | fair |
| Travel score (0–10) | Rating | |
|---|---|---|
| Jan | 4.5 | fair |
| Feb | 4.9 | fair |
| Mar | 5.9 | good |
| Apr | 7.0 | good |
| May | 6.7 | good |
| Jun | 6.1 | good |
| Jul | 6.2 | good |
| Aug | 6.7 | good |
| Sep | 6.7 | good |
| Oct | 6.7 | good |
| Nov | 6.4 | good |
| Dec | 5.1 | fair |
The beach/pool score favors clear, rainless days with daytime highs between 24°C and 34°C. Based on this score, the best time of year to visit Rosário do Sul for hot-weather activities is from mid October to late April, with a peak score in the last week of November.
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).
What to pack for Rosário do Sul, by month
Month by month, what's worth putting in the bag — from the temperature range, rain chance, sun and wind. Tap a month for a quick packing note.
For a warm-season trip around January (highs near 31°C), the essentials are light clothes, rain gear and sun protection. In the cold season around July (highs near 18°C), pack rain gear.
In January, Rosário do Sul sees daytime highs around 31°C and nights near 20°C. Pack light clothes and sun protection. Worth having: rain gear. About 12 days see rain.
UV index (midday) in Rosário do Sul by month
Clear-sky midday UV index through the year, shaded by the WHO exposure levels — how much sun protection each month calls for.
Under clear skies, the midday UV index in Rosário do Sul peaks around January 18 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 | 13 | 10 | 7 | 4 | 3 | 4 | 5 | 7 | 7 | 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 | 13 | Extreme |
| Mar | 10 | Very high |
| Apr | 7 | Very high |
| May | 4 | Moderate |
| Jun | 3 | Moderate |
| Jul | 4 | Moderate |
| Aug | 5 | Moderate |
| Sep | 7 | Very high |
| Oct | 7 | Very high |
| Nov | 11 | Extreme |
| Dec | 12 | Extreme |
Average hourly UV index in Rosário do Sul
Modeled clear-sky UV for every hour of every day — when in the day sun protection actually matters.
The whole year hour by hour: each column is a day, each row an hour, and the color is the modeled clear-sky UV index — the midday peak scaled down as the sun sits lower in the sky. Darker overlays mark night, lighter ones the civil-twilight hours around sunrise and sunset.
UV falls off far faster than brightness as the sun drops, so even in January the burn window is concentrated in the middle of the day: about 9 hours a day reach index 3 (protection recommended), and 7 hours reach 6 or more. Mornings and late afternoons stay comparatively gentle year round.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV ≥ 3 (h/day) | 9 | 8.5 | 7.5 | 6 | 4 | 2 | 3 | 4.5 | 6.5 | 7 | 8.5 | 9 |
| UV ≥ 6 (h/day) | 7 | 6.5 | 5 | 3 | 0 | 0 | 0 | 0 | 3 | 3.5 | 6 | 6.5 |
| UV ≥ 3 (h/day) | UV ≥ 6 (h/day) | |
|---|---|---|
| Jan | 9 | 7 |
| Feb | 8.5 | 6.5 |
| Mar | 7.5 | 5 |
| Apr | 6 | 3 |
| May | 4 | 0 |
| Jun | 2 | 0 |
| Jul | 3 | 0 |
| Aug | 4.5 | 0 |
| Sep | 6.5 | 3 |
| Oct | 7 | 3.5 |
| Nov | 8.5 | 6 |
| Dec | 9 | 6.5 |
Growing season
Rosário do Sul is frost-free year round — even the coldest nights rarely reach freezing, so there is no start or end to the growing season.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Frost-free chance (%) | 100 | 100 | 100 | 100 | 100 | 97 | 96 | 98 | 100 | 100 | 100 | 100 |
| Frost nights | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Frost-free chance (%) | Frost nights | |
|---|---|---|
| Jan | 100 | 0 |
| Feb | 100 | 0 |
| Mar | 100 | 0 |
| Apr | 100 | 0 |
| May | 100 | 0 |
| Jun | 97 | 0 |
| Jul | 96 | 0 |
| Aug | 98 | 0 |
| Sep | 100 | 0 |
| Oct | 100 | 0 |
| Nov | 100 | 0 |
| Dec | 100 | 0 |
Growing degree days
Growing degree days tally heat above 10°C: each day adds however many degrees its average temperature runs over that threshold, and cold days add nothing. Rosário do Sul banks about 3,535 degree days a year, and the running total — which growers use to time plantings and predict maturity — climbs fastest around January.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Growing degree days (°C·days) | 477 | 414 | 416 | 307 | 204 | 132 | 114 | 168 | 208 | 292 | 357 | 446 |
| Growing degree days (°C·days) | |
|---|---|
| Jan | 477 |
| Feb | 414 |
| Mar | 416 |
| Apr | 307 |
| May | 204 |
| Jun | 132 |
| Jul | 114 |
| Aug | 168 |
| Sep | 208 |
| Oct | 292 |
| Nov | 357 |
| Dec | 446 |
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
Rosário do Sul receives about 4.7 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 2.4 and 7.0 kWh/m².
The brighter stretch of the year lasts 6.0 months, from around Sep 27 to Mar 27. The brightest month is December, averaging about 6.9 kWh/m² (intense).
The dimmest month is June, down near 2.4 kWh/m² — roughly 65% less than the December peak.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 6.7 | 5.9 | 5.1 | 3.9 | 2.9 | 2.4 | 2.7 | 3.6 | 4.3 | 5.2 | 6.6 | 7.0 |
| Level | Intense | Bright | Bright | Moderate | Moderate | Moderate | Moderate | Moderate | Bright | Bright | Intense | Intense |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| Jan | 6.7 | Intense |
| Feb | 5.9 | Bright |
| Mar | 5.1 | Bright |
| Apr | 3.9 | Moderate |
| May | 2.9 | Moderate |
| Jun | 2.4 | Moderate |
| Jul | 2.7 | Moderate |
| Aug | 3.6 | Moderate |
| Sep | 4.3 | Bright |
| Oct | 5.2 | Bright |
| Nov | 6.6 | Intense |
| Dec | 7.0 | Intense |
Where is Rosário do Sul?
Rosário do Sul sits at 30.3°S, 54.9°W, 123 m above sea level, in Brazil. The nearest listed city is São Gabriel, 58 km away.
Topography around Rosário do Sul
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Rosário do Sul.
Within 3 km, the terrain around Rosário do Sul has only modest variations in elevation — a maximum elevation change of 76 m around an average of 102 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 119 m; within 80 km, significant variations in elevation — a maximum elevation change of 306 m.
The land around Rosário do Sul is covered by trees (35%), grassland (25%) and artificial surfaces (20%) within 3 km, grassland (43%) and cropland (38%) within 16 km, and grassland (55%) and cropland (31%) 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 Rosário do Sul (-30.2583°, -54.9142°, elevation 123 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. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).