Rosário do Sul weather in August

In August, Rosário do Sul sees average daytime highs of 21°C and overnight lows near 10°C, with 116 mm of rain across 8.6 wet days and about 10.9 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 21°C by the end. The sky is clear or mostly clear about 41% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 h 30 min at the start of August to 11 h 18 min by month's end. Set against the rest of the year, August is Rosário do Sul's 4th-clearest and 4th-windiest month. For the whole year in context, see Rosário do Sul's year-round climate.

Daytime high
21°
10th warmest
Overnight low
10°
3rd coldest
Rainfall
116 mm
8.6 wet days
Daylight
10 h 54 min
8:17 AM – 7:11 PM
Cloud cover
51%
4th clearest
Wind
14 km/h
4th windiest
Solar energy
3.56 kWh/m²
Travel score
6.8
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 21°C by the end.

A typical August day in Rosário do Sul reaches about 21°C in the afternoon and slips back to 10°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 14°C and 28°C. Set against its neighbours, August runs about 2°C warmer than July and about 1°C cooler than September.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1199
2199
3209
42010
52010
62010
72010
82010
92010
102010
112010
122010
132010
142110
152110
162110
172110
182110
192110
202111
212111
222111
232111
242111
252111
262111
272111
282211
292211
302211
312211

How August really feels in Rosário do Sul

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Rosário do Sul weather by month

How August compares with the rest of the year at a glance. August is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 20°13411.513.74.5
Feb30° / 20°12910.313.14.9
Mar29° / 18°122912.25.9
Apr25° / 15°1519.311.37.0
May21° / 12°1148.710.56.7
Jun19° / 10°1309.410.16.1
Jul18° / 1299.410.26.2
Aug21° / 10°1168.610.96.8
Sep22° / 12°1559.911.86.7
Oct25° / 14°1891112.76.7
Nov28° / 16°1298.513.56.5
Dec30° / 19°1329.213.95.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 12% of August, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25149
35149
45248
55248
65248
75248
85347
95347
105446
115446
125446
135446
145446
155446
165545
175545
185545
195545
205545
215644
225644
235644
245644
255545
265545
275446
285347
295347
305248
315248

Chance of precipitation in August

Any precipitation

Rosário do Sul gets around 116 mm of rain over 8.6 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 28% and peaks near 33% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
228
328
427
527
627
727
826
926
1026
1126
1226
1326
1426
1526
1626
1726
1826
1927
2027
2127
2228
2328
2429
2530
2630
2731
2832
2932
3033
3133

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 64% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
17019110
27019110
36920110
46920110
56920110
66920110
76721111
86821101
96821101
106722101
116722101
126722101
136623101
146623101
156524101
166424111
176424111
186324121
196324121
206224131
216124141
226124141
236023152
245923162
255923162
265922172
275722183
285722183
295721193
305721193
315621194

Wind in August

Winds average 14 km/h in August.

Across August, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 30 min at the start of August to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over August. Sunrise moves from 8:30 AM to 8:00 AM, and sunset from 7:01 PM to 7:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.58:307:01
210.58:297:02
310.68:297:03
410.68:287:03
510.68:277:04
610.68:267:04
710.78:257:05
810.78:247:06
910.78:247:06
1010.78:237:07
1110.88:227:08
1210.88:217:08
1310.88:207:09
1410.88:197:09
1510.98:187:10
1610.98:177:11
1710.98:167:11
1811.08:157:12
1911.08:147:12
2011.08:137:13
2111.08:127:14
2211.18:107:14
2311.18:097:15
2411.18:087:15
2511.28:077:16
2611.28:067:17
2711.28:057:17
2811.28:047:18
2911.38:027:18
3011.38:017:19
3111.38:007:20

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.56 kWh/m².

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 6.95 kWh/m² in December across the year — August's 3.56 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.1Moderate
43.2Moderate
53.2Moderate
63.3Moderate
73.3Moderate
83.3Moderate
93.4Moderate
103.4Moderate
113.4Moderate
123.5Moderate
133.5Moderate
143.5Moderate
153.5Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.7Moderate
203.7Moderate
213.7Moderate
223.7Moderate
233.7Moderate
243.8Moderate
253.8Moderate
263.8Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.9Moderate
313.9Moderate
Planning a trip in August

Is August a good time to visit Rosário do Sul?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.8
Sightseeing
2nd-best month of the year
3.9
Beach & pool
10th-best month of the year

August is a reasonable time to visit Rosário do Sul for sightseeing.

What to pack for Rosário do Sul in August

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

In August, Rosário do Sul sees daytime highs around 21°C and nights near 10°C. Worth packing: rain gear. About 9 days see rain.

rain gear

UV index in Rosário do Sul in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 18UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar10Very high
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5Moderate
Sep7Very high
Oct7Very high
Nov11Extreme
Dec12Extreme
Location & terrain

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.

3 km
76 m
16 km
119 m
80 km
306 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
August weather nearby: São Gabriel 58 km · São Francisco de Assis 81 km · Dom Pedrito 84 km · Sant'Ana do Livramento 92 km · Rivera 94 km · Alegrete 100 km · São Pedro do Sul 100 km · Santiago 119 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
Roman Catholic 57%Evangelical 27%none 9%other 4%

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).