Arroio Grande weather in August

In August, Arroio Grande sees average daytime highs of 18°C and overnight lows near 10°C, with 107 mm of rain across 8.9 wet days and about 10.8 hours of daylight. It is the 10th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 17°C in the first days to 19°C by the end. The sky is clear or mostly clear about 33% of the time in August, and the air most often feels dry.

Daylight stretches from about 10 h 24 min at the start of August to 11 h 18 min by month's end. Set against the rest of the year, August is Arroio Grande's 7th-clearest and 6th-windiest month. For the whole year in context, see Arroio Grande's year-round climate.

Daytime high: 18°; 10th warmest
Overnight low: 10°; 3rd coldest
Rainfall: 107 mm; 8.9 wet days
Daylight: 10 h 48 min; 8:12 AM – 7:01 PM
Cloud cover: 59%; 7th clearest
Wind: 14 km/h; 6th windiest
Solar energy: 3.29 kWh/m²
Travel score: 6.0; out of 10

Arroio Grande is human settlement in Brazil.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← July Arroio Grande year-round climate September →Best places to visit in August

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 17°C in the first days to 19°C by the end.

A typical August day in Arroio Grande reaches about 18°C in the afternoon and slips back to 10°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 24°C. Set against its neighbours, August runs about 2°C warmer than July and about 1°C cooler than September.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	17	17	17	17	17	17	17	17	18	18	18	18	18	18	18	18	18	18	18	18	18	19	19	19	19	19	19	19	19	19	19
Avg low (°C)	9	9	9	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	11	11	11	11	11	11	11	11	11	11	11	11

	Avg high (°C)	Avg low (°C)
1	17	9
2	17	9
3	17	9
4	17	10
5	17	10
6	17	10
7	17	10
8	17	10
9	18	10
10	18	10
11	18	10
12	18	10
13	18	10
14	18	10
15	18	10
16	18	10
17	18	10
18	18	10
19	18	10
20	18	11
21	18	11
22	19	11
23	19	11
24	19	11
25	19	11
26	19	11
27	19	11
28	19	11
29	19	11
30	19	11
31	19	11

Arroio Grande weather by month

How August compares with the rest of the year at a glance. August is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	28° / 20°	111	10.6	13.9	6.3
Feb	27° / 20°	107	11.2	13.2	6.1
Mar	26° / 19°	103	9.9	12.2	6.7
Apr	23° / 16°	124	9.8	11.2	6.9
May	20° / 13°	96	9	10.4	6.4
Jun	17° / 10°	110	9.3	9.9	5.5
Jul	16° / 9°	107	9.3	10.1	5.3
Aug	18° / 10°	107	8.9	10.8	6.0
Sep	19° / 12°	124	10.2	11.8	6.0
Oct	22° / 14°	133	10.4	12.8	6.4
Nov	24° / 16°	98	8.2	13.7	7.2
Dec	27° / 18°	96	9.5	14.1	6.8

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 55%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	44	44	45	44	44	44	44	44	46	47	47	47	47	46	46	47	46	46	47	46	46	46	46	46	46	44	44	44	43	43	42
Cloudier (%)	56	56	55	56	56	56	56	56	54	53	53	53	53	54	54	53	54	54	53	54	54	54	54	54	54	56	56	56	57	57	58

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	45	55
4	44	56
5	44	56
6	44	56
7	44	56
8	44	56
9	46	54
10	47	53
11	47	53
12	47	53
13	47	53
14	46	54
15	46	54
16	47	53
17	46	54
18	46	54
19	47	53
20	46	54
21	46	54
22	46	54
23	46	54
24	46	54
25	46	54
26	44	56
27	44	56
28	44	56
29	43	57
30	43	57
31	42	58

Chance of precipitation in August

Any precipitation

Arroio Grande gets around 107 mm of rain over 8.9 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 29% and peaks near 34% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	29	28	28	28	28	27	27	27	27	27	27	27	27	27	27	27	27	28	28	28	29	29	30	31	31	32	33	33	33	34	34

	Rain chance (%)
1	29
2	28
3	28
4	28
5	28
6	27
7	27
8	27
9	27
10	27
11	27
12	27
13	27
14	27
15	27
16	27
17	27
18	28
19	28
20	28
21	29
22	29
23	30
24	31
25	31
26	32
27	33
28	33
29	33
30	34
31	34

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 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	76	75	75	75	75	75	75	75	75	75	74	74	74	74	73	72	71	71	68	68	67	66	65	65	64	63	63	63	62	63	62
Comfortable (%)	19	20	20	20	20	20	20	20	19	19	20	20	20	20	21	21	22	22	23	23	24	24	25	25	25	26	26	26	26	25	25
Humid (%)	5	5	5	5	5	5	5	5	6	6	6	6	6	6	6	7	7	7	8	8	8	9	9	9	10	10	10	10	11	11	12
Muggy (%)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	76	19	5	0
2	75	20	5	0
3	75	20	5	0
4	75	20	5	0
5	75	20	5	0
6	75	20	5	0
7	75	20	5	0
8	75	20	5	0
9	75	19	6	0
10	75	19	6	0
11	74	20	6	0
12	74	20	6	0
13	74	20	6	0
14	74	20	6	0
15	73	21	6	0
16	72	21	7	0
17	71	22	7	0
18	71	22	7	0
19	68	23	8	1
20	68	23	8	1
21	67	24	8	1
22	66	24	9	1
23	65	25	9	1
24	65	25	9	1
25	64	25	10	1
26	63	26	10	1
27	63	26	10	1
28	63	26	10	1
29	62	26	11	1
30	63	25	11	1
31	62	25	12	1

Wind in August

Winds average 14 km/h in August.

Across August, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	14	15	15	15	15	15	15	15	15	15	15	15	15
Feels	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze	light breeze

	Wind speed (km/h)	Feels
1	14	light breeze
2	14	light breeze
3	14	light breeze
4	14	light breeze
5	14	light breeze
6	14	light breeze
7	14	light breeze
8	14	light breeze
9	14	light breeze
10	14	light breeze
11	14	light breeze
12	14	light breeze
13	14	light breeze
14	14	light breeze
15	14	light breeze
16	14	light breeze
17	14	light breeze
18	14	light breeze
19	14	light breeze
20	15	light breeze
21	15	light breeze
22	15	light breeze
23	15	light breeze
24	15	light breeze
25	15	light breeze
26	15	light breeze
27	15	light breeze
28	15	light breeze
29	15	light breeze
30	15	light breeze
31	15	light breeze

Sunrise & sunset in August

DaylightNight

Daylight runs from about 10 h 24 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 54 minutes over August. Sunrise moves from 8:26 AM to 7:54 AM, and sunset from 6:50 PM to 7:11 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.4	10.4	10.5	10.5	10.5	10.5	10.6	10.6	10.6	10.6	10.7	10.7	10.7	10.7	10.8	10.8	10.8	10.9	10.9	10.9	11.0	11.0	11.0	11.0	11.1	11.1	11.1	11.2	11.2	11.2	11.3
Sunrise (AM)	8:26	8:26	8:25	8:24	8:23	8:22	8:21	8:20	8:19	8:18	8:17	8:16	8:15	8:14	8:13	8:12	8:11	8:10	8:09	8:08	8:07	8:05	8:04	8:03	8:02	8:01	7:59	7:58	7:57	7:55	7:54
Sunset (PM)	6:50	6:51	6:52	6:52	6:53	6:54	6:55	6:55	6:56	6:57	6:57	6:58	6:59	6:59	7:00	7:01	7:01	7:02	7:03	7:03	7:04	7:05	7:05	7:06	7:07	7:07	7:08	7:09	7:09	7:10	7:11

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.4	8:26	6:50
2	10.4	8:26	6:51
3	10.5	8:25	6:52
4	10.5	8:24	6:52
5	10.5	8:23	6:53
6	10.5	8:22	6:54
7	10.6	8:21	6:55
8	10.6	8:20	6:55
9	10.6	8:19	6:56
10	10.6	8:18	6:57
11	10.7	8:17	6:57
12	10.7	8:16	6:58
13	10.7	8:15	6:59
14	10.7	8:14	6:59
15	10.8	8:13	7:00
16	10.8	8:12	7:01
17	10.8	8:11	7:01
18	10.9	8:10	7:02
19	10.9	8:09	7:03
20	10.9	8:08	7:03
21	11.0	8:07	7:04
22	11.0	8:05	7:05
23	11.0	8:04	7:05
24	11.0	8:03	7:06
25	11.1	8:02	7:07
26	11.1	8:01	7:07
27	11.1	7:59	7:08
28	11.2	7:58	7:09
29	11.2	7:57	7:09
30	11.2	7:55	7:10
31	11.3	7:54	7:11

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 3.29 kWh/m².

For context, solar energy here swings from a low near 2.3 kWh/m² to a high of 6.9 kWh/m² in December across the year — August's 3.29 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	2.8	2.9	2.9	2.9	3.0	3.0	3.0	3.1	3.1	3.1	3.2	3.2	3.2	3.3	3.3	3.3	3.4	3.4	3.4	3.4	3.4	3.4	3.5	3.5	3.5	3.5	3.5	3.5	3.6	3.6	3.6
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	2.8	Moderate
2	2.9	Moderate
3	2.9	Moderate
4	2.9	Moderate
5	3.0	Moderate
6	3.0	Moderate
7	3.0	Moderate
8	3.1	Moderate
9	3.1	Moderate
10	3.1	Moderate
11	3.2	Moderate
12	3.2	Moderate
13	3.2	Moderate
14	3.3	Moderate
15	3.3	Moderate
16	3.3	Moderate
17	3.4	Moderate
18	3.4	Moderate
19	3.4	Moderate
20	3.4	Moderate
21	3.4	Moderate
22	3.4	Moderate
23	3.5	Moderate
24	3.5	Moderate
25	3.5	Moderate
26	3.5	Moderate
27	3.5	Moderate
28	3.5	Moderate
29	3.6	Moderate
30	3.6	Moderate
31	3.6	Moderate

Planning a trip in August

Is August a good time to visit Arroio Grande?

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

6.0

Sightseeing

9th-best month of the year

2.0

Beach & pool

10th-best month of the year

August is a reasonable time to visit Arroio Grande for sightseeing.

What to pack for Arroio Grande in August

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

In August, Arroio Grande sees daytime highs around 18°C and nights near 10°C. Worth packing: rain gear. About 9 days see rain.

rain gear

UV index in Arroio Grande in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arroio Grande peaks around January 15 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	13	12	10	6	4	3	3	4	7	7	11	12
Level	Extreme	Extreme	Very high	High	Moderate	Moderate	Moderate	Moderate	High	High	Extreme	Extreme

	UV index (midday)	Level
Jan	13	Extreme
Feb	12	Extreme
Mar	10	Very high
Apr	6	High
May	4	Moderate
Jun	3	Moderate
Jul	3	Moderate
Aug	4	Moderate
Sep	7	High
Oct	7	High
Nov	11	Extreme
Dec	12	Extreme

Location & terrain

Where is Arroio Grande?

Arroio Grande sits at 32.2°S, 53.1°W, 31 m above sea level, in Brazil. The nearest listed city is Jaguarão, 46 km away.

Topography around Arroio Grande

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Arroio Grande.

Within 3 km, the terrain around Arroio Grande has only modest variations in elevation — a maximum elevation change of 62 m around an average of 33 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 240 m; within 80 km, significant variations in elevation — a maximum elevation change of 480 m.

The land around Arroio Grande is covered by cropland (34%), trees (27%) and grassland (26%) within 3 km, cropland (48%), grassland (25%) and trees (24%) within 16 km, and grassland (35%), cropland (22%) and trees (20%) within 80 km.

3 km

62 m

cropland 34%

16 km

240 m

cropland 48%

80 km

480 m

grassland 35%

treesgrasslandcroplandartificial surfaceswaterwetland

← July Arroio Grande year-round climate September →Best places to visit in August

August weather nearby: Jaguarão 46 km · Capão do Leão 78 km · Pelotas 87 km · Piratini 88 km · Rio Grande 96 km · Canguçu 101 km · São José do Norte 101 km · Melo 102 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 Arroio Grande (-32.2375°, -53.0869°, elevation 31 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).

	Avg high (°C)	Avg low (°C)
1	17	9
2	17	9
3	17	9
4	17	10
5	17	10
6	17	10
7	17	10
8	17	10
9	18	10
10	18	10
11	18	10
12	18	10
13	18	10
14	18	10
15	18	10
16	18	10
17	18	10
18	18	10
19	18	10
20	18	11
21	18	11
22	19	11
23	19	11
24	19	11
25	19	11
26	19	11
27	19	11
28	19	11
29	19	11
30	19	11
31	19	11

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	45	55
4	44	56
5	44	56
6	44	56
7	44	56
8	44	56
9	46	54
10	47	53
11	47	53
12	47	53
13	47	53
14	46	54
15	46	54
16	47	53
17	46	54
18	46	54
19	47	53
20	46	54
21	46	54
22	46	54
23	46	54
24	46	54
25	46	54
26	44	56
27	44	56
28	44	56
29	43	57
30	43	57
31	42	58

	Rain chance (%)
1	29
2	28
3	28
4	28
5	28
6	27
7	27
8	27
9	27
10	27
11	27
12	27
13	27
14	27
15	27
16	27
17	27
18	28
19	28
20	28
21	29
22	29
23	30
24	31
25	31
26	32
27	33
28	33
29	33
30	34
31	34

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	76	19	5	0
2	75	20	5	0
3	75	20	5	0
4	75	20	5	0
5	75	20	5	0
6	75	20	5	0
7	75	20	5	0
8	75	20	5	0
9	75	19	6	0
10	75	19	6	0
11	74	20	6	0
12	74	20	6	0
13	74	20	6	0
14	74	20	6	0
15	73	21	6	0
16	72	21	7	0
17	71	22	7	0
18	71	22	7	0
19	68	23	8	1
20	68	23	8	1
21	67	24	8	1
22	66	24	9	1
23	65	25	9	1
24	65	25	9	1
25	64	25	10	1
26	63	26	10	1
27	63	26	10	1
28	63	26	10	1
29	62	26	11	1
30	63	25	11	1
31	62	25	12	1

	Avg high (°C)	Avg low (°C)
1	17	9
2	17	9
3	17	9
4	17	10
5	17	10
6	17	10
7	17	10
8	17	10
9	18	10
10	18	10
11	18	10
12	18	10
13	18	10
14	18	10
15	18	10
16	18	10
17	18	10
18	18	10
19	18	10
20	18	11
21	18	11
22	19	11
23	19	11
24	19	11
25	19	11
26	19	11
27	19	11
28	19	11
29	19	11
30	19	11
31	19	11

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	45	55
4	44	56
5	44	56
6	44	56
7	44	56
8	44	56
9	46	54
10	47	53
11	47	53
12	47	53
13	47	53
14	46	54
15	46	54
16	47	53
17	46	54
18	46	54
19	47	53
20	46	54
21	46	54
22	46	54
23	46	54
24	46	54
25	46	54
26	44	56
27	44	56
28	44	56
29	43	57
30	43	57
31	42	58

	Rain chance (%)
1	29
2	28
3	28
4	28
5	28
6	27
7	27
8	27
9	27
10	27
11	27
12	27
13	27
14	27
15	27
16	27
17	27
18	28
19	28
20	28
21	29
22	29
23	30
24	31
25	31
26	32
27	33
28	33
29	33
30	34
31	34

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	76	19	5	0
2	75	20	5	0
3	75	20	5	0
4	75	20	5	0
5	75	20	5	0
6	75	20	5	0
7	75	20	5	0
8	75	20	5	0
9	75	19	6	0
10	75	19	6	0
11	74	20	6	0
12	74	20	6	0
13	74	20	6	0
14	74	20	6	0
15	73	21	6	0
16	72	21	7	0
17	71	22	7	0
18	71	22	7	0
19	68	23	8	1
20	68	23	8	1
21	67	24	8	1
22	66	24	9	1
23	65	25	9	1
24	65	25	9	1
25	64	25	10	1
26	63	26	10	1
27	63	26	10	1
28	63	26	10	1
29	62	26	11	1
30	63	25	11	1
31	62	25	12	1

	Avg high (°C)	Avg low (°C)
1	17	9
2	17	9
3	17	9
4	17	10
5	17	10
6	17	10
7	17	10
8	17	10
9	18	10
10	18	10
11	18	10
12	18	10
13	18	10
14	18	10
15	18	10
16	18	10
17	18	10
18	18	10
19	18	10
20	18	11
21	18	11
22	19	11
23	19	11
24	19	11
25	19	11
26	19	11
27	19	11
28	19	11
29	19	11
30	19	11
31	19	11

	Clearer (%)	Cloudier (%)
1	44	56
2	44	56
3	45	55
4	44	56
5	44	56
6	44	56
7	44	56
8	44	56
9	46	54
10	47	53
11	47	53
12	47	53
13	47	53
14	46	54
15	46	54
16	47	53
17	46	54
18	46	54
19	47	53
20	46	54
21	46	54
22	46	54
23	46	54
24	46	54
25	46	54
26	44	56
27	44	56
28	44	56
29	43	57
30	43	57
31	42	58

	Rain chance (%)
1	29
2	28
3	28
4	28
5	28
6	27
7	27
8	27
9	27
10	27
11	27
12	27
13	27
14	27
15	27
16	27
17	27
18	28
19	28
20	28
21	29
22	29
23	30
24	31
25	31
26	32
27	33
28	33
29	33
30	34
31	34

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	76	19	5	0
2	75	20	5	0
3	75	20	5	0
4	75	20	5	0
5	75	20	5	0
6	75	20	5	0
7	75	20	5	0
8	75	20	5	0
9	75	19	6	0
10	75	19	6	0
11	74	20	6	0
12	74	20	6	0
13	74	20	6	0
14	74	20	6	0
15	73	21	6	0
16	72	21	7	0
17	71	22	7	0
18	71	22	7	0
19	68	23	8	1
20	68	23	8	1
21	67	24	8	1
22	66	24	9	1
23	65	25	9	1
24	65	25	9	1
25	64	25	10	1
26	63	26	10	1
27	63	26	10	1
28	63	26	10	1
29	62	26	11	1
30	63	25	11	1
31	62	25	12	1