Gurupi weather in September

In September, Gurupi sees average daytime highs of 36°C and overnight lows near 24°C, with 18 mm of rain across 2.9 wet days and about 11.9 hours of daylight. It is the 1st-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 36°C through the month. The sky is clear or mostly clear about 57% of the time in September, and the air most often feels dry.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Gurupi's 4th-clearest and 4th-windiest month. For the whole year in context, see Gurupi's year-round climate.

Daytime high
36°
1st warmest
Overnight low
24°
12th coldest
Rainfall
18 mm
2.9 wet days
Daylight
11 h 54 min
6:13 AM – 6:09 PM
Cloud cover
38%
4th clearest
Wind
9 km/h
4th windiest
Solar energy
6.15 kWh/m²
Travel score
2.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 36°C through the month.

A typical September day in Gurupi reaches about 36°C in the afternoon and slips back to 24°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 38°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13623
23623
33623
43623
53623
63624
73624
83624
93624
103624
113624
123624
133624
143624
153624
163624
173624
183624
193624
203624
213624
223524
233524
243524
253524
263524
273524
283524
293524
303524

How September really feels in Gurupi

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.

Gurupi weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°29025.912.63.0
Feb30° / 23°24623.412.43.0
Mar31° / 23°25024.512.13.1
Apr31° / 23°13516.211.73.7
May32° / 22°284.511.54.4
Jun33° / 21°20.411.34.9
Jul33° / 21°0011.44.7
Aug35° / 22°10.211.63.5
Sep36° / 24°182.911.92.7
Oct34° / 24°10913.412.32.9
Nov31° / 23°23522.312.53.0
Dec31° / 23°26524.512.73.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 25%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18416
28416
38317
48218
58119
68119
78119
88020
98020
108020
117822
127822
137822
147822
157723
167723
177525
187525
197426
207327
217327
227228
237030
246931
256832
266634
276634
286436
296337
306139

Chance of precipitation in September

Any precipitation

Gurupi gets around 18 mm of rain over 2.9 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 10% and peaks near 25% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
12
23
33
43
53
64
74
84
94
104
115
125
136
146
157
168
179
1810
1911
2012
2113
2215
2316
2417
2519
2620
2722
2823
2924
3025

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 28% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
144291971
244281981
344271891
4442718102
5442717102
6432717112
7432717112
8422717122
9412816122
10402817133
11392817143
12372817143
13362818154
14342818164
15322819175
16302720185
17282720196
18262621207
19242522228
20222422239
212023232510
221821232711
231620232912
241419233114
251217233216
261116223317
27915223419
28814213521
29714213523
30613203625

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 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 18 minutes over September. Sunrise moves from 6:23 AM to 6:03 AM, and sunset from 6:09 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:236:09
211.86:226:09
311.86:226:09
411.86:216:09
511.86:206:09
611.86:206:09
711.86:196:09
811.86:186:09
911.96:176:09
1011.96:176:09
1111.96:166:09
1211.96:156:09
1311.96:156:09
1411.96:146:09
1511.96:136:09
1611.96:136:09
1711.96:126:09
1812.06:116:09
1912.06:106:09
2012.06:106:09
2112.06:096:08
2212.06:086:08
2312.06:086:08
2412.06:076:08
2512.06:066:08
2612.06:066:08
2712.16:056:08
2812.16:046:08
2912.16:036:08
3012.16:036:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.15 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.95 kWh/m² to a high of 6.15 kWh/m² in September across the year — September's 6.15 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.1Intense
26.1Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.2Intense
86.2Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.2Intense
146.2Intense
156.2Intense
166.2Intense
176.2Intense
186.2Intense
196.2Intense
206.2Intense
216.2Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Gurupi

In seasonPeak

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

Gurupi's monsoon runs November–April, 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 Gurupi?

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

2.7
Sightseeing
12th-best month of the year
6.1
Beach & pool
5th-best month of the year

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

What to pack for Gurupi in September

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

In September, Gurupi sees daytime highs around 36°C and nights near 24°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Gurupi 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 Gurupi peaks around February 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 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 14UV 15Jun 21UV 8
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr12Extreme
May10Very high
Jun8Very high
Jul9Very high
Aug10Extreme
Sep12Extreme
Oct10Extreme
Nov12Extreme
Dec12Extreme

Air quality in Gurupi 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 Gurupi is worst in October — around 24 µg/m³ PM2.5 (moderate), about 6.2× the cleanest month (July, 4 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1223 µg/m³Jul 114 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar9Good
Apr8Good
May6Good
Jun4Good
Jul4Good
Aug7Good
Sep20Moderate
Oct24Moderate
Nov12Good
Dec9Good
Location & terrain

Where is Gurupi?

Gurupi sits at 11.7°S, 49.1°W, 299 m above sea level, in Brazil. The nearest listed city is Formoso do Araguaia, 51 km away.

Topography around Gurupi

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

Within 3 km, the terrain around Gurupi has only modest variations in elevation — a maximum elevation change of 68 m around an average of 291 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 125 m; within 80 km, significant variations in elevation — a maximum elevation change of 395 m.

The land around Gurupi is covered by artificial surfaces (52%), grassland (23%) and trees (22%) within 3 km, grassland (56%) and trees (31%) within 16 km, and grassland (48%) and trees (39%) within 80 km.

3 km
68 m
16 km
125 m
80 km
395 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Formoso do Araguaia 51 km · Lagoa da Confusão 120 km · Porto Nacional 134 km · Paraíso do Tocantins 174 km · Porangatu 191 km · Palmas 192 km · São Miguel do Araguaia 209 km · Minaçu 221 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 Gurupi (-11.7292°, -49.0686°, elevation 299 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).