Água Boa weather in September

In September, Água Boa sees average daytime highs of 35°C and overnight lows near 23°C, with 28 mm of rain across 4.8 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 53% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 42 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Água Boa's 4th-clearest and 3rd-windiest month. For the whole year in context, see Água Boa's year-round climate.

Daytime high
35°
1st warmest
Overnight low
23°
11th coldest
Rainfall
28 mm
4.8 wet days
Daylight
11 h 54 min
6:25 AM – 6:21 PM
Cloud cover
41%
4th clearest
Wind
7 km/h
3rd windiest
Solar energy
5.98 kWh/m²
Travel score
2.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 35°C through the month.

A typical September day in Água Boa reaches about 35°C in the afternoon and slips back to 23°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 32°C and 37°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C warmer than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13522
23522
33522
43522
53522
63522
73522
83522
93523
103523
113523
123523
133523
143523
153523
163523
173523
183523
193523
203523
213523
223523
233523
243523
253523
263523
273523
283423
293423
303423

How September really feels in Água Boa

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Água Boa weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°2642612.73.0
Feb30° / 22°22023.912.53.0
Mar31° / 22°21725.112.13.0
Apr31° / 22°11516.211.73.8
May32° / 21°173.511.45.0
Jun32° / 20°20.411.25.4
Jul32° / 19°00.111.35.3
Aug34° / 21°50.711.54.0
Sep35° / 23°284.811.92.9
Oct33° / 23°12416.912.32.8
Nov31° / 23°2012312.72.9
Dec30° / 23°24625.312.83.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 28%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18119
28119
38119
47921
57921
67921
77921
87822
97723
107723
117723
127624
137624
147525
157525
167426
177426
187327
197228
207129
217030
226832
236733
246535
256436
266337
276139
286040
295842
305842

Chance of precipitation in September

Any precipitation

Água Boa gets around 28 mm of rain over 4.8 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 17% and peaks near 35% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
16
26
37
47
58
68
79
89
910
1011
1111
1212
1313
1414
1514
1615
1716
1817
1918
2019
2120
2222
2323
2425
2527
2628
2730
2832
2933
3035

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 25% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1273223143
2273223144
3273123154
4263123155
5263024155
6253024156
7253024166
8243024166
9233025167
10212925177
11202926177
12192927188
13172827198
14162728209
15142729219
161325292210
171224292411
181122292512
191021292713
20919292914
21817283016
22716273217
23714263419
24613253621
25511243722
26410233924
27410214026
2839204028
2938194129
3028184131

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 42 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over September. Sunrise moves from 6:37 AM to 6:15 AM, and sunset from 6:20 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:376:20
211.76:366:20
311.86:356:20
411.86:346:20
511.86:346:20
611.86:336:20
711.86:326:20
811.86:316:20
911.86:316:20
1011.86:306:20
1111.96:296:20
1211.96:286:21
1311.96:286:21
1411.96:276:21
1511.96:266:21
1611.96:256:21
1711.96:256:21
1811.96:246:21
1912.06:236:21
2012.06:226:21
2112.06:216:21
2212.06:216:21
2312.06:206:21
2412.06:196:21
2512.06:186:21
2612.16:186:21
2712.16:176:21
2812.16:166:21
2912.16:156:21
3012.16:156:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.98 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.69 kWh/m² to a high of 5.98 kWh/m² in September across the year — September's 5.98 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.9Bright
55.9Bright
65.9Bright
75.9Bright
85.9Bright
95.9Bright
106.0Bright
116.0Bright
126.0Bright
136.0Bright
146.0Bright
156.0Bright
166.0Bright
176.0Bright
186.0Bright
196.0Bright
206.0Bright
216.0Bright
226.0Intense
236.0Intense
246.0Intense
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
Planning a trip in September

Hazard calendar for Água Boa

In seasonPeak

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

Água Boa's monsoon runs October–March, when most of the year's rain falls.

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

Is September a good time to visit Água Boa?

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

2.9
Sightseeing
10th-best month of the year
6.3
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in Água Boa. The water and warmth also suit a beach or pool day.

What to pack for Água Boa in September

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

In September, Água Boa sees daytime highs around 35°C and nights near 23°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

UV index in Água Boa in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Água Boa peaks around February 12 at about 15 (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 12UV 15Jul 10UV 8
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul8Very high
Aug9Very high
Sep12Extreme
Oct11Extreme
Nov13Extreme
Dec13Extreme

Air quality in Água Boa in September

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Água Boa is worst in September — around 47 µg/m³ PM2.5 (poor), about 8.6× the cleanest month (June, 6 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodSep 1544 µg/m³Jun 166 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar9Good
Apr8Good
May6Good
Jun6Good
Jul6Good
Aug27Moderate
Sep47Poor
Oct18Moderate
Nov10Good
Dec8Good
Location & terrain

Where is Água Boa?

Água Boa sits at 14.1°S, 52.2°W, 455 m above sea level, in Brazil. The nearest listed city is Canarana, 57 km away.

Topography around Água Boa

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

Within 3 km, the terrain around Água Boa has only modest variations in elevation — a maximum elevation change of 76 m around an average of 438 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 219 m; within 80 km, significant variations in elevation — a maximum elevation change of 357 m.

The land around Água Boa is covered by grassland (36%), cropland (23%) and artificial surfaces (22%) within 3 km, grassland (34%), cropland (31%) and trees (22%) within 16 km, and grassland (43%) and trees (30%) within 80 km.

3 km
76 m
16 km
219 m
80 km
357 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Canarana 57 km · Nova Xavantina 72 km · Campinápolis 88 km · Querência 162 km · Barra do Garças 205 km · Aragarças 206 km · Paranatinga 208 km · São Miguel do Araguaia 232 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 Água Boa (-14.05°, -52.1586°, elevation 455 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).