São Luís do Quitunde weather in September

In September, São Luís do Quitunde sees average daytime highs of 26°C and overnight lows near 22°C, with 62 mm of rain across 17.9 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 26°C through the month. The sky is clear or mostly clear about 43% of the time in September, and the air most often feels muggy.

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 São Luís do Quitunde's 1st-clearest and 4th-windiest month. For the whole year in context, see São Luís do Quitunde's year-round climate.

Daytime high
26°
9th warmest
Overnight low
22°
3rd coldest
Rainfall
62 mm
17.9 wet days
Daylight
11 h 54 min
5:18 AM – 5:15 PM
Cloud cover
44%
1st clearest
Wind
14 km/h
4th windiest
Solar energy
5.51 kWh/m²
Travel score
5.6
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical September day in São Luís do Quitunde reaches about 26°C in the afternoon and slips back to 22°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 27°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12622
22622
32622
42622
52622
62622
72622
82622
92622
102622
112622
122622
132622
142622
152622
162622
172622
182622
192622
202623
212623
222723
232723
242723
252723
262723
272723
282723
292723
302723

How September really feels in São Luís do Quitunde

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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

São Luís do Quitunde 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
Jan29° / 24°5917.112.54.9
Feb29° / 24°6416.512.34.6
Mar29° / 25°8320.112.14.5
Apr28° / 24°10921.211.84.4
May27° / 24°1492411.64.5
Jun26° / 23°1662511.54.4
Jul26° / 22°15325.611.54.6
Aug26° / 22°9622.211.75.1
Sep26° / 22°6217.911.95.6
Oct27° / 23°4615.312.26.0
Nov28° / 24°3312.112.45.9
Dec29° / 24°3312.412.55.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 41% of September, with mostly cloudy or overcast conditions the remaining 16%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27822
37921
47921
57921
67921
77921
88020
98020
108020
118119
128218
138218
148317
158416
168515
178614
188614
198713
208713
218812
228812
238911
248911
258911
268812
278812
288812
298812
308713

Chance of precipitation in September

Any precipitation

São Luís do Quitunde gets around 62 mm of rain over 17.9 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 60% and peaks near 71% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
171
271
370
470
570
669
769
868
968
1067
1166
1265
1364
1463
1562
1661
1759
1858
1957
2055
2154
2253
2351
2450
2549
2648
2747
2847
2947
3047

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 70% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
147422
247422
347323
447323
547224
647224
747125
847125
947125
1047125
1137225
1237225
1337225
1437225
1537225
1637225
1737225
1837225
1927226
2027226
2127127
2227028
2326929
2426830
2526731
2626632
2726533
2826335
2926236
3026137

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

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 5:27 AM to 5:09 AM, and sunset from 5:17 PM to 5:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:275:17
211.85:275:16
311.85:265:16
411.85:265:16
511.95:255:16
611.95:245:16
711.95:245:16
811.95:235:16
911.95:235:16
1011.95:225:16
1111.95:215:16
1211.95:215:15
1311.95:205:15
1411.95:195:15
1511.95:195:15
1611.95:185:15
1712.05:175:15
1812.05:175:15
1912.05:165:15
2012.05:165:15
2112.05:155:15
2212.05:145:14
2312.05:145:14
2412.05:135:14
2512.05:125:14
2612.05:125:14
2712.05:115:14
2812.15:115:14
2912.15:105:14
3012.15:095:14

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.51 kWh/m².

For context, solar energy here swings from a low near 4.1 kWh/m² to a high of 6.3 kWh/m² in November across the year — September's 5.51 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.4Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.6Bright
195.6Bright
205.6Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for São Luís do Quitunde

In seasonPeak

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

São Luís do Quitunde's rainy season runs March–August, 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 São Luís do Quitunde?

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

5.6
Sightseeing
3rd-best month of the year
5.5
Beach & pool
7th-best month of the year

September is a reasonable time to visit São Luís do Quitunde for sightseeing.

What to pack for São Luís do Quitunde in September

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

In September, São Luís do Quitunde sees daytime highs around 26°C and nights near 22°C. Pack rain gear. Worth having: light clothes and sun protection. About 18 days see rain.

rain gearlight clothessun protection

Sea temperature near São Luís do Quitunde in September

The nearest coast averages about 26°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 21 km away) is warmest in April at about 29°C and coldest in August near 26°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov27Warm
Dec27Warm

UV index in São Luís do Quitunde 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 São Luís do Quitunde peaks around March 13 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 13UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is São Luís do Quitunde?

São Luís do Quitunde sits at 9.3°S, 35.6°W, 7 m above sea level, in Brazil. The nearest listed city is Barra de Santo Antônio, 11 km away.

Topography around São Luís do Quitunde

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Luís do Quitunde.

Within 3 km, the terrain around São Luís do Quitunde has only modest variations in elevation — a maximum elevation change of 98 m around an average of 24 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 267 m; within 80 km, large variations in elevation — a maximum elevation change of 814 m.

The land around São Luís do Quitunde is covered by grassland (52%) and trees (26%) within 3 km, grassland (40%) and trees (34%) within 16 km, and grassland (44%) and water (32%) within 80 km.

3 km
98 m
16 km
267 m
80 km
814 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Barra de Santo Antônio 11 km · Matriz de Camaragibe 19 km · Joaquim Gomes 29 km · Messias 32 km · Porto Calvo 35 km · Rio Largo 37 km · Satuba 40 km · Murici 42 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 São Luís do Quitunde (-9.3183°, -35.5611°, elevation 7 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).