Raposa weather in September

In September, Raposa sees average daytime highs of 30°C and overnight lows near 26°C, with 11 mm of rain across 2.8 wet days and about 12 hours of daylight. It is the 1st-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 79% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Raposa's 1st-clearest and 2nd-windiest month. For the whole year in context, see Raposa's year-round climate.

Daytime high
30°
1st warmest
Overnight low
26°
9th coldest
Rainfall
11 mm
2.8 wet days
Daylight
12 hours
5:51 AM – 5:50 PM
Cloud cover
31%
1st clearest
Wind
22 km/h
2nd windiest
Solar energy
6.4 kWh/m²
Travel score
6.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical September day in Raposa reaches about 30°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 30°C. Set against its neighbours, September runs on par with August and on par with October.

25°28°30°33°35°151015202530
Avg high (°C)Avg low (°C)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
173026
183026
193026
203026
213026
223026
233026
243026
253026
262926
272926
282926
292926
302926

How September really feels in Raposa

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.

Raposa weather by month

How September compares with the rest of the year at a glance. September is the 1st-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 25°22925.412.13.6
Feb28° / 25°31725.912.13.3
Mar28° / 25°45230.2123.2
Apr28° / 25°43728.711.93.1
May29° / 25°29226.511.93.5
Jun29° / 25°14621.811.94.1
Jul29° / 25°9418.411.94.7
Aug30° / 26°257.511.95.9
Sep30° / 26°112.8126.4
Oct29° / 26°153.712.16.3
Nov29° / 26°286.312.15.8
Dec29° / 26°7515.112.14.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 79% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 7%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1964
2964
3964
4964
5964
6964
7964
8964
9955
10946
11946
12946
13946
14937
15937
16928
17928
18928
19928
20919
21919
22919
23919
24919
25919
26919
27919
28919
299010
309010

Chance of precipitation in September

Any precipitation

Raposa gets around 11 mm of rain over 2.8 wet days in September, the driest month. 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 14% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
114
214
313
412
512
611
711
810
910
1010
119
129
139
149
159
169
1710
1810
1910
2010
219
229
239
249
259
269
279
289
299
309

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 100% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1991
2991
3991
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
27991
28991
29991
30991

Wind in September

Winds average 22 km/h in September.

Across September, daily wind ranges from about 21 km/h on the calmest days to 22 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
121breezy
221breezy
321breezy
421breezy
521breezy
621breezy
721breezy
821breezy
922breezy
1022breezy
1122breezy
1222breezy
1322breezy
1422breezy
1522breezy
1622breezy
1722breezy
1822breezy
1922breezy
2022breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2622breezy
2722breezy
2822breezy
2922breezy
3022breezy

Sunrise & sunset in September

DaylightNight

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

Days grow by about 0 minutes over September. Sunrise moves from 5:58 AM to 5:45 AM, and sunset from 5:55 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:585:55
212.05:575:54
312.05:575:54
412.05:565:54
512.05:565:54
612.05:555:53
712.05:555:53
812.05:555:53
912.05:545:52
1012.05:545:52
1112.05:535:52
1212.05:535:52
1312.05:525:51
1412.05:525:51
1512.05:525:51
1612.05:515:50
1712.05:515:50
1812.05:505:50
1912.05:505:49
2012.05:495:49
2112.05:495:49
2212.05:495:49
2312.05:485:48
2412.05:485:48
2512.05:475:48
2612.05:475:47
2712.05:465:47
2812.05:465:47
2912.05:465:47
3012.05:455:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.4 kWh/m².

For context, solar energy here swings from a low near 4.68 kWh/m² to a high of 6.5 kWh/m² in October across the year — September's 6.4 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.3Intense
46.3Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.4Intense
116.4Intense
126.4Intense
136.4Intense
146.4Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in September

Hazard calendar for Raposa

In seasonPeak

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

Raposa's monsoon runs January–May, 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 Raposa?

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

6.4
Sightseeing
1st-best month of the year
8.5
Beach & pool
1st-best month of the year

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

What to pack for Raposa in September

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

In September, Raposa sees daytime highs around 30°C and nights near 26°C. Pack light clothes and sun protection. Worth having: a windbreaker.

light clothessun protectiona windbreaker

Sea temperature near Raposa in September

The nearest coast averages about 28°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in May at about 29°C and coldest in October near 27°C.

The water stays above 20°C all year — warm enough for a swim any month.

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Tropical
Mar28Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Warm
Sep28Warm
Oct27Warm
Nov28Warm
Dec28Warm

UV index in Raposa 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 Raposa peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 17 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 16Jul 17UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar16Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov11Extreme
Dec11Extreme

Air quality in Raposa 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 Raposa is worst in February — around 18 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (July, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodFeb 2018 µg/m³Jul 157 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb18Moderate
Mar18Moderate
Apr13Moderate
May8Good
Jun7Good
Jul7Good
Aug8Good
Sep9Good
Oct10Good
Nov10Good
Dec11Good
Location & terrain

Where is Raposa?

Raposa sits at 2.4°S, 44.1°W, 2 m above sea level, in Brazil. The nearest listed city is Paço do Lumiar, 12 km away.

Topography around Raposa

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

Within 3 km, the terrain around Raposa has only modest variations in elevation — a maximum elevation change of 45 m around an average of 6 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, only modest variations in elevation — a maximum elevation change of 104 m.

The land around Raposa is covered by water (40%) and mangroves (31%) within 3 km, water (68%) within 16 km, and water (46%) and trees (30%) within 80 km.

3 km
45 m
16 km
59 m
80 km
104 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Paço do Lumiar 12 km · São José de Ribamar 16 km · São Luís 25 km · Alcântara 35 km · Icatu 39 km · Morros 50 km · Rosário 60 km · Bacabeira 65 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 Raposa (-2.4231°, -44.1033°, elevation 2 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).