Iaçu weather in August

In August, Iaçu sees average daytime highs of 29°C and overnight lows near 18°C, with 11 mm of rain across 3.7 wet days and about 11.6 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 16% of the time in August, and the air most often feels humid.

Daylight stretches from about 11 h 24 min at the start of August to 11 h 42 min by month's end. Set against the rest of the year, August is Iaçu's 7th-clearest and 4th-windiest month. For the whole year in context, see Iaçu's year-round climate.

Daytime high: 29°; 10th warmest
Overnight low: 18°; 2nd coldest
Rainfall: 11 mm; 3.7 wet days
Daylight: 11 h 36 min; 5:58 AM – 5:32 PM
Cloud cover: 62%; 7th clearest
Wind: 10 km/h; 4th windiest
Solar energy: 4.17 kWh/m²
Travel score: 6.3; out of 10

Iaçu is human settlement in Brazil.

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

← July Iaçu 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

Day-to-day highs hold fairly steady near 29°C through the month.

A typical August day in Iaçu reaches about 29°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 31°C. Set against its neighbours, August runs on par with July and about 2°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)	28	28	28	28	28	28	28	28	28	28	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	29	30	30
Avg low (°C)	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	18	19	19	19	19	19	19	19	19

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

How August really feels in Iaçu

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

heat index over the day's high

Days feeling ≤ 0°C

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.

Iaçu 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	32° / 22°	56	6.6	12.7	4.0
Feb	33° / 22°	37	6.1	12.4	3.8
Mar	33° / 22°	53	8.1	12.1	3.9
Apr	31° / 22°	37	7.1	11.7	4.5
May	30° / 21°	18	5.1	11.4	5.4
Jun	29° / 19°	14	4.6	11.3	6.2
Jul	28° / 18°	14	4.8	11.3	6.6
Aug	29° / 18°	11	3.7	11.6	6.3
Sep	30° / 19°	11	2.5	11.9	5.6
Oct	32° / 21°	21	4	12.3	4.7
Nov	32° / 22°	53	7.1	12.6	4.3
Dec	32° / 22°	55	6.6	12.7	4.2

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 28% of August, with mostly cloudy or overcast conditions the remaining 56%.

	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 (%)	46	46	45	45	44	43	44	43	42	41	40	40	40	40	39	39	39	39	39	40	42	42	44	45	45	47	48	49	51	51	52
Cloudier (%)	54	54	55	55	56	57	56	57	58	59	60	60	60	60	61	61	61	61	61	60	58	58	56	55	55	53	52	51	49	49	48

	Clearer (%)	Cloudier (%)
1	46	54
2	46	54
3	45	55
4	45	55
5	44	56
6	43	57
7	44	56
8	43	57
9	42	58
10	41	59
11	40	60
12	40	60
13	40	60
14	40	60
15	39	61
16	39	61
17	39	61
18	39	61
19	39	61
20	40	60
21	42	58
22	42	58
23	44	56
24	45	55
25	45	55
26	47	53
27	48	52
28	49	51
29	51	49
30	51	49
31	52	48

Chance of precipitation in August

Any precipitation

Iaçu gets around 11 mm of rain over 3.7 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 12% and peaks near 13% 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 (%)	13	12	12	12	12	12	12	11	11	11	11	11	11	11	11	11	12	12	12	12	12	12	12	12	12	12	11	11	11	10	10

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

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the humid band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

	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 (%)	0	0	0	0	0	0	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Comfortable (%)	17	17	17	17	17	17	17	18	18	18	18	19	19	18	18	18	17	17	16	16	16	15	15	14	14	14	14	14	14	15	15
Humid (%)	73	73	73	73	73	73	72	71	71	71	71	69	69	70	70	70	71	71	72	72	72	72	72	73	73	73	72	72	72	71	70
Muggy (%)	10	10	10	10	10	10	10	10	10	10	10	11	11	11	11	11	11	11	11	11	11	12	12	12	12	12	13	13	13	13	14

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	0	17	73	10
2	0	17	73	10
3	0	17	73	10
4	0	17	73	10
5	0	17	73	10
6	0	17	73	10
7	1	17	72	10
8	1	18	71	10
9	1	18	71	10
10	1	18	71	10
11	1	18	71	10
12	1	19	69	11
13	1	19	69	11
14	1	18	70	11
15	1	18	70	11
16	1	18	70	11
17	1	17	71	11
18	1	17	71	11
19	1	16	72	11
20	1	16	72	11
21	1	16	72	11
22	1	15	72	12
23	1	15	72	12
24	1	14	73	12
25	1	14	73	12
26	1	14	73	12
27	1	14	72	13
28	1	14	72	13
29	1	14	72	13
30	1	15	71	13
31	1	15	70	14

Wind in August

Winds average 10 km/h in August.

Across August, daily wind ranges from about 10 km/h on the calmest days to 10 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)	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

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

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 24 min at the start of August to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over August. Sunrise moves from 6:04 AM to 5:49 AM, and sunset from 5:30 PM to 5:33 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)	11.4	11.4	11.4	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.5	11.6	11.6	11.6	11.6	11.6	11.6	11.6	11.6	11.6	11.6	11.7	11.7	11.7	11.7	11.7	11.7	11.7	11.7
Sunrise (AM)	6:04	6:04	6:03	6:03	6:03	6:02	6:02	6:01	6:01	6:01	6:00	6:00	5:59	5:59	5:58	5:58	5:57	5:57	5:56	5:56	5:55	5:54	5:54	5:53	5:53	5:52	5:51	5:51	5:50	5:49	5:49
Sunset (PM)	5:30	5:30	5:30	5:30	5:31	5:31	5:31	5:31	5:31	5:31	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:32	5:33	5:33	5:33	5:33	5:33	5:33	5:33	5:33	5:33	5:33	5:33

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	11.4	6:04	5:30
2	11.4	6:04	5:30
3	11.4	6:03	5:30
4	11.5	6:03	5:30
5	11.5	6:03	5:31
6	11.5	6:02	5:31
7	11.5	6:02	5:31
8	11.5	6:01	5:31
9	11.5	6:01	5:31
10	11.5	6:01	5:31
11	11.5	6:00	5:32
12	11.5	6:00	5:32
13	11.5	5:59	5:32
14	11.6	5:59	5:32
15	11.6	5:58	5:32
16	11.6	5:58	5:32
17	11.6	5:57	5:32
18	11.6	5:57	5:32
19	11.6	5:56	5:32
20	11.6	5:56	5:32
21	11.6	5:55	5:33
22	11.6	5:54	5:33
23	11.6	5:54	5:33
24	11.7	5:53	5:33
25	11.7	5:53	5:33
26	11.7	5:52	5:33
27	11.7	5:51	5:33
28	11.7	5:51	5:33
29	11.7	5:50	5:33
30	11.7	5:49	5:33
31	11.7	5:49	5:33

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 4.17 kWh/m².

For context, solar energy here swings from a low near 3.52 kWh/m² to a high of 6.01 kWh/m² in January across the year — August's 4.17 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)	3.9	3.9	3.9	4.0	4.0	4.0	4.0	4.0	4.0	4.0	4.1	4.1	4.1	4.1	4.1	4.1	4.2	4.2	4.2	4.2	4.3	4.3	4.3	4.3	4.4	4.4	4.5	4.5	4.5	4.5	4.6
Level	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	3.9	Moderate
2	3.9	Moderate
3	3.9	Moderate
4	4.0	Moderate
5	4.0	Moderate
6	4.0	Moderate
7	4.0	Bright
8	4.0	Bright
9	4.0	Bright
10	4.0	Bright
11	4.1	Bright
12	4.1	Bright
13	4.1	Bright
14	4.1	Bright
15	4.1	Bright
16	4.1	Bright
17	4.2	Bright
18	4.2	Bright
19	4.2	Bright
20	4.2	Bright
21	4.3	Bright
22	4.3	Bright
23	4.3	Bright
24	4.3	Bright
25	4.4	Bright
26	4.4	Bright
27	4.5	Bright
28	4.5	Bright
29	4.5	Bright
30	4.5	Bright
31	4.6	Bright

Planning a trip in August

Is August a good time to visit Iaçu?

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

6.3

Sightseeing

2nd-best month of the year

7.8

Beach & pool

2nd-best month of the year

August is a reasonable time to visit Iaçu for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Iaçu in August

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

In August, Iaçu sees daytime highs around 29°C and nights near 18°C. Pack light clothes. About 4 days see rain.

light clothes

UV index in Iaçu in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks 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 Iaçu peaks around February 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 9 (very high).

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	15	14	12	9	9	9	10	11	13	13	12
Level	Extreme	Extreme	Extreme	Extreme	Very high	Very high	Very high	Extreme	Extreme	Extreme	Extreme	Extreme

	UV index (midday)	Level
Jan	14	Extreme
Feb	15	Extreme
Mar	14	Extreme
Apr	12	Extreme
May	9	Very high
Jun	9	Very high
Jul	9	Very high
Aug	10	Extreme
Sep	11	Extreme
Oct	13	Extreme
Nov	13	Extreme
Dec	12	Extreme

Location & terrain

Where is Iaçu?

Iaçu sits at 12.8°S, 40.2°W, 240 m above sea level, in Brazil. The nearest listed city is Itaberaba, 29 km away.

Topography around Iaçu

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

Within 3 km, the terrain around Iaçu has only modest variations in elevation — a maximum elevation change of 228 m around an average of 251 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 598 m; within 80 km, large variations in elevation — a maximum elevation change of 928 m.

The land around Iaçu is covered by grassland (61%) within 3 km, grassland (67%) within 16 km, and grassland (58%) and trees (27%) within 80 km.

3 km

228 m

grassland 61%

16 km

598 m

grassland 67%

80 km

928 m

grassland 58%

treesshrubsgrasslandcroplandartificial surfaceswater

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

August weather nearby: Itaberaba 29 km · Boa Vista do Tupim 44 km · Itatim 56 km · Ruy Barbosa 62 km · Amargosa 72 km · Maracás 79 km · Ubaíra 81 km · Castro Alves 85 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 Iaçu (-12.7672°, -40.2117°, elevation 240 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	28	18
2	28	18
3	28	18
4	28	18
5	28	18
6	28	18
7	28	18
8	28	18
9	28	18
10	28	18
11	29	18
12	29	18
13	29	18
14	29	18
15	29	18
16	29	18
17	29	18
18	29	18
19	29	18
20	29	18
21	29	18
22	29	18
23	29	18
24	29	19
25	29	19
26	29	19
27	29	19
28	29	19
29	29	19
30	30	19
31	30	19

	Clearer (%)	Cloudier (%)
1	46	54
2	46	54
3	45	55
4	45	55
5	44	56
6	43	57
7	44	56
8	43	57
9	42	58
10	41	59
11	40	60
12	40	60
13	40	60
14	40	60
15	39	61
16	39	61
17	39	61
18	39	61
19	39	61
20	40	60
21	42	58
22	42	58
23	44	56
24	45	55
25	45	55
26	47	53
27	48	52
28	49	51
29	51	49
30	51	49
31	52	48

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	0	17	73	10
2	0	17	73	10
3	0	17	73	10
4	0	17	73	10
5	0	17	73	10
6	0	17	73	10
7	1	17	72	10
8	1	18	71	10
9	1	18	71	10
10	1	18	71	10
11	1	18	71	10
12	1	19	69	11
13	1	19	69	11
14	1	18	70	11
15	1	18	70	11
16	1	18	70	11
17	1	17	71	11
18	1	17	71	11
19	1	16	72	11
20	1	16	72	11
21	1	16	72	11
22	1	15	72	12
23	1	15	72	12
24	1	14	73	12
25	1	14	73	12
26	1	14	73	12
27	1	14	72	13
28	1	14	72	13
29	1	14	72	13
30	1	15	71	13
31	1	15	70	14

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

	Clearer (%)	Cloudier (%)
1	46	54
2	46	54
3	45	55
4	45	55
5	44	56
6	43	57
7	44	56
8	43	57
9	42	58
10	41	59
11	40	60
12	40	60
13	40	60
14	40	60
15	39	61
16	39	61
17	39	61
18	39	61
19	39	61
20	40	60
21	42	58
22	42	58
23	44	56
24	45	55
25	45	55
26	47	53
27	48	52
28	49	51
29	51	49
30	51	49
31	52	48

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	0	17	73	10
2	0	17	73	10
3	0	17	73	10
4	0	17	73	10
5	0	17	73	10
6	0	17	73	10
7	1	17	72	10
8	1	18	71	10
9	1	18	71	10
10	1	18	71	10
11	1	18	71	10
12	1	19	69	11
13	1	19	69	11
14	1	18	70	11
15	1	18	70	11
16	1	18	70	11
17	1	17	71	11
18	1	17	71	11
19	1	16	72	11
20	1	16	72	11
21	1	16	72	11
22	1	15	72	12
23	1	15	72	12
24	1	14	73	12
25	1	14	73	12
26	1	14	73	12
27	1	14	72	13
28	1	14	72	13
29	1	14	72	13
30	1	15	71	13
31	1	15	70	14

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

	Clearer (%)	Cloudier (%)
1	46	54
2	46	54
3	45	55
4	45	55
5	44	56
6	43	57
7	44	56
8	43	57
9	42	58
10	41	59
11	40	60
12	40	60
13	40	60
14	40	60
15	39	61
16	39	61
17	39	61
18	39	61
19	39	61
20	40	60
21	42	58
22	42	58
23	44	56
24	45	55
25	45	55
26	47	53
27	48	52
28	49	51
29	51	49
30	51	49
31	52	48

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

	Dry (%)	Comfortable (%)	Humid (%)	Muggy (%)
1	0	17	73	10
2	0	17	73	10
3	0	17	73	10
4	0	17	73	10
5	0	17	73	10
6	0	17	73	10
7	1	17	72	10
8	1	18	71	10
9	1	18	71	10
10	1	18	71	10
11	1	18	71	10
12	1	19	69	11
13	1	19	69	11
14	1	18	70	11
15	1	18	70	11
16	1	18	70	11
17	1	17	71	11
18	1	17	71	11
19	1	16	72	11
20	1	16	72	11
21	1	16	72	11
22	1	15	72	12
23	1	15	72	12
24	1	14	73	12
25	1	14	73	12
26	1	14	73	12
27	1	14	72	13
28	1	14	72	13
29	1	14	72	13
30	1	15	71	13
31	1	15	70	14