Formosa weather in August

In August, Formosa sees average daytime highs of 29°C and overnight lows near 17°C, with 4 mm of rain across 1.1 wet days and about 11.5 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 71% of the time in August, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of August to 11 h 42 min by month's end. Set against the rest of the year, August is Formosa's 1st-clearest and 1st-windiest month. For the whole year in context, see Formosa's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
17°
3rd coldest
Rainfall
4 mm
1.1 wet days
Daylight
11 h 30 min
7:29 AM – 6:58 PM
Cloud cover
27%
1st clearest
Wind
9 km/h
1st windiest
Solar energy
5.65 kWh/m²
Travel score
7.1
out of 10

Formosa is human settlement in Brazil.

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 28°C in the first days to 30°C by the end.

A typical August day in Formosa reaches about 29°C in the afternoon and slips back to 17°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 32°C. Set against its neighbours, August runs about 2°C warmer than July and about 2°C cooler than September.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12816
22816
32816
42816
52816
62916
72916
82916
92916
102916
112916
122916
132916
142916
152916
162916
172916
182917
192917
202917
212917
222917
233017
243017
253017
263017
273017
283017
293017
303018
313018

Formosa weather by month

How August compares with the rest of the year at a glance. August is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°20218.612.84.5
Feb29° / 20°15916.512.54.5
Mar29° / 20°17418.312.14.6
Apr29° / 19°691011.75.7
May28° / 17°15311.37.3
Jun27° / 16°40.611.18.3
Jul28° / 15°0011.28.5
Aug29° / 17°41.111.57.1
Sep31° / 19°233.811.95.3
Oct31° / 20°10311.612.44.4
Nov29° / 20°21820.812.74.1
Dec28° / 20°24420.612.94.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in August, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of August, with mostly cloudy or overcast conditions the remaining 15%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18614
28614
38614
48614
58614
68614
78515
88515
98515
108515
118515
128515
138515
148515
158515
168515
178515
188515
198515
208515
218515
228515
238515
248614
258614
268614
278515
288515
298515
308515
318515

Chance of precipitation in August

Any precipitation

Formosa gets around 4 mm of rain over 1.1 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 3% and peaks near 6% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
10
20
30
40
51
61
71
82
92
102
113
123
133
144
154
164
175
185
195
205
215
225
235
245
255
265
275
285
295
306
316

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1881200
2881200
3891100
4891100
5891100
6891100
7891100
8881110
9881110
10871210
11871210
12871210
13861310
14851320
15851320
16841420
17841420
18821530
19821530
20821530
21801640
22801640
23801640
24791740
25781750
26771850
27761860
28761860
29751870
30751870
31731881

Wind in August

Winds average 9 km/h in August, the windiest month of the year.

Across August, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 18 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 24 minutes over August. Sunrise moves from 7:36 AM to 7:19 AM, and sunset from 6:54 PM to 7:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.37:366:54
211.37:366:55
311.37:366:55
411.37:356:55
511.37:356:55
611.47:346:56
711.47:346:56
811.47:336:56
911.47:336:56
1011.47:326:57
1111.47:326:57
1211.47:316:57
1311.47:316:57
1411.57:306:57
1511.57:306:58
1611.57:296:58
1711.57:296:58
1811.57:286:58
1911.57:276:58
2011.57:276:58
2111.57:266:59
2211.67:256:59
2311.67:256:59
2411.67:246:59
2511.67:236:59
2611.67:236:59
2711.67:226:59
2811.67:216:59
2911.77:207:00
3011.77:207:00
3111.77:197:00

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.65 kWh/m².

For context, solar energy here swings from a low near 4.62 kWh/m² to a high of 6.24 kWh/m² in September across the year — August's 5.65 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.4Bright
55.4Bright
65.4Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.9Bright
275.9Bright
285.9Bright
296.0Bright
306.0Bright
316.0Intense
Planning a trip in August

Hazard calendar for Formosa

In seasonPeak

None of Formosa's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Formosa's monsoon runs November–March, when most of the year's rain falls.

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

Is August a good time to visit Formosa?

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

7.1
Sightseeing
4th-best month of the year
8.9
Beach & pool
1st-best month of the year

August is one of the better times to visit Formosa for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Formosa in August

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

In August, Formosa sees daytime highs around 29°C and nights near 17°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Formosa 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 Formosa peaks around February 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 15UV 16Jul 10UV 8
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar15Extreme
Apr12Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug10Very high
Sep12Extreme
Oct13Extreme
Nov14Extreme
Dec13Extreme

Air quality in Formosa in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Formosa is worst in September — around 24 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (July, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1923 µg/m³Jul 127 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar10Good
Apr10Good
May9Good
Jun8Good
Jul7Good
Aug10Good
Sep24Moderate
Oct17Moderate
Nov9Good
Dec9Good
Location & terrain

Where is Formosa?

Formosa sits at 15.5°S, 47.3°W, 915 m above sea level, in Brazil. The nearest listed city is Planaltina, 31 km away.

Topography around Formosa

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

Within 3 km, the terrain around Formosa has only modest variations in elevation — a maximum elevation change of 176 m around an average of 917 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 610 m; within 80 km, large variations in elevation — a maximum elevation change of 848 m.

The land around Formosa is covered by artificial surfaces (47%) and grassland (25%) within 3 km, grassland (34%), trees (24%) and cropland (20%) within 16 km, and grassland (34%), trees (23%) and cropland (22%) within 80 km.

3 km
176 m
16 km
610 m
80 km
848 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Planaltina 31 km · Planaltina 35 km · Sobradinho 51 km · Itapoã 52 km · Sobradinho II 55 km · Paranoá 55 km · Lago Norte 60 km · São Sebastião 62 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 Formosa (-15.5372°, -47.3344°, elevation 915 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).