Mangaratiba weather in September

In September, Mangaratiba sees average daytime highs of 24°C and overnight lows near 19°C, with 97 mm of rain across 12.5 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 8th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 34% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 30 min at the start of September to 12 h 12 min by month's end. Set against the rest of the year, September is Mangaratiba's 6th-clearest and 1st-windiest month. For the whole year in context, see Mangaratiba's year-round climate.

Daytime high
24°
9th warmest
Overnight low
19°
4th coldest
Rainfall
97 mm
12.5 wet days
Daylight
11 h 54 min
6:54 AM – 6:47 PM
Cloud cover
58%
6th clearest
Wind
11 km/h
1st windiest
Solar energy
4.62 kWh/m²
Travel score
6.6
out of 10

Mangaratiba is human settlement in Brazil.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical September day in Mangaratiba reaches about 24°C in the afternoon and slips back to 19°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12419
22419
32419
42419
52419
62419
72419
82419
92419
102419
112419
122419
132419
142419
152419
162419
172419
182419
192419
202419
212419
222419
232419
242419
252419
262419
272419
282419
292420
302420

Mangaratiba weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°25921.613.34.5
Feb28° / 24°18917.512.84.5
Mar28° / 23°2072112.24.8
Apr26° / 22°12814.111.56.1
May24° / 20°9011.810.96.8
Jun24° / 19°587.810.67.5
Jul23° / 18°61810.77.5
Aug24° / 18°51811.27.5
Sep24° / 19°9712.511.96.6
Oct25° / 20°12114.412.56.0
Nov25° / 21°17818.613.15.3
Dec27° / 23°21220.113.44.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16040
25941
35941
45842
55743
65644
75545
85446
95347
105347
115248
125149
135050
144951
154951
164852
174753
184654
194555
204456
214456
224357
234159
244159
254060
264060
273961
283862
293763
303763

Chance of precipitation in September

Any precipitation

Mangaratiba gets around 97 mm of rain over 12.5 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 41% and peaks near 48% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
131
232
332
433
533
634
735
836
936
1037
1138
1238
1339
1439
1540
1641
1742
1843
1944
2045
2145
2246
2347
2447
2547
2648
2748
2848
2948
3048

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 45% of days. Sticky, muggy-or-worse air turns up on roughly 40% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
131652290
221652300
321652300
421651310
521651310
621649320
721649330
821649330
911649340
1011649340
1111548350
1211548360
1311448371
1411447371
1511347381
1611346391
1711246401
1811245411
1911244411
2021243422
2121242432
2221241433
2321240433
2421139444
2521138445
2621137445
2721136456
2821136456
2921135457
3021135457

Wind in September

Winds average 11 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 30 min at the start of September to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over September. Sunrise moves from 7:10 AM to 6:40 AM, and sunset from 6:42 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.57:106:42
211.67:096:42
311.67:086:43
411.67:076:43
511.67:066:43
611.67:056:43
711.77:046:44
811.77:036:44
911.77:026:44
1011.77:016:45
1111.87:006:45
1211.86:596:45
1311.86:586:46
1411.86:576:46
1511.86:556:46
1611.96:546:47
1711.96:536:47
1811.96:526:47
1911.96:516:47
2012.06:506:48
2112.06:496:48
2212.06:486:48
2312.06:476:49
2412.16:466:49
2512.16:456:49
2612.16:446:50
2712.16:436:50
2812.16:426:50
2912.26:416:51
3012.26:406:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².

For context, solar energy here swings from a low near 3.36 kWh/m² to a high of 5.99 kWh/m² in February across the year — September's 4.62 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Mangaratiba

In seasonPeak

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

Mangaratiba's rainy season runs October–April, when most of the year's rain falls.

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

Is September a good time to visit Mangaratiba?

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

6.6
Sightseeing
5th-best month of the year
5.7
Beach & pool
6th-best month of the year

September is a reasonable time to visit Mangaratiba for sightseeing.

What to pack for Mangaratiba in September

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

In September, Mangaratiba sees daytime highs around 24°C and nights near 19°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

Sea temperature near Mangaratiba in September

The nearest coast averages about 21°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 25 km away) is warmest in February at about 26°C and coldest in August near 21°C.

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

20°22°24°26°28°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar26Warm
Apr25Warm
May24Refreshing
Jun23Refreshing
Jul22Refreshing
Aug21Refreshing
Sep21Refreshing
Oct22Refreshing
Nov23Refreshing
Dec24Warm

UV index in Mangaratiba in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mangaratiba peaks around February 9 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeFeb 9UV 14Jul 12UV 5
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar12Extreme
Apr9Very high
May7High
Jun6High
Jul5High
Aug8Very high
Sep7High
Oct11Extreme
Nov13Extreme
Dec14Extreme

Air quality in Mangaratiba 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 Mangaratiba is worst in September — around 26 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (February, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJul 1625 µg/m³Feb 1713 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb13Moderate
Mar14Moderate
Apr15Moderate
May20Moderate
Jun24Moderate
Jul26Moderate
Aug23Moderate
Sep26Moderate
Oct17Moderate
Nov14Moderate
Dec13Moderate
Location & terrain

Where is Mangaratiba?

Mangaratiba sits at 23.0°S, 44.0°W, 21 m above sea level, in Brazil. The nearest listed city is Rio Claro, 28 km away.

Topography around Mangaratiba

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

Within 3 km, the terrain around Mangaratiba has significant variations in elevation — a maximum elevation change of 444 m around an average of 58 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,664 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,049 m.

The land around Mangaratiba is covered by water (52%) and trees (35%) within 3 km, trees (51%) and water (40%) within 16 km, and trees (36%), water (36%) and grassland (22%) within 80 km.

3 km
444 m
16 km
1,664 m
80 km
2,049 m
treesgrasslandartificial surfaceswater
September weather nearby: Rio Claro 28 km · Angra dos Reis 29 km · Itaguaí 30 km · Piraí 40 km · Seropédica 42 km · Universidade Rural 42 km · Barra Mansa 48 km · Volta Redonda 49 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 Mangaratiba (-22.9597°, -44.0406°, elevation 21 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).