São Miguel dos Campos weather in September

In September, São Miguel dos Campos sees average daytime highs of 28°C and overnight lows near 22°C, with 59 mm of rain across 17.5 wet days and about 11.9 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 34% 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 Miguel dos Campos's 2nd-clearest and 5th-windiest month. For the whole year in context, see São Miguel dos Campos's year-round climate.

Daytime high
28°
9th warmest
Overnight low
22°
3rd coldest
Rainfall
59 mm
17.5 wet days
Daylight
11 h 54 min
5:20 AM – 5:17 PM
Cloud cover
48%
2nd clearest
Wind
12 km/h
5th windiest
Solar energy
5.46 kWh/m²
Travel score
5.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in São Miguel dos Campos reaches about 28°C in the afternoon and slips back to 22°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12721
22721
32721
42721
52721
62721
72721
82721
92721
102721
112722
122722
132722
142722
152722
162822
172822
182822
192822
202822
212822
222822
232822
242822
252822
262822
272822
282822
292822
302822

How September really feels in São Miguel dos Campos

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 Miguel dos Campos weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°5615.612.54.3
Feb30° / 24°5816.612.33.9
Mar31° / 24°6918.912.13.9
Apr30° / 24°9919.711.84.0
May28° / 23°12422.311.64.3
Jun27° / 22°13423.711.44.5
Jul27° / 21°13224.511.54.6
Aug27° / 21°8622.311.74.9
Sep28° / 22°5917.511.95.4
Oct29° / 22°4814.612.25.3
Nov30° / 23°3611.212.45.1
Dec30° / 24°331212.64.8

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 44% of September, with mostly cloudy or overcast conditions the remaining 22%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17129
27129
37129
47129
57129
67129
77129
87327
97327
107327
117426
127525
137624
147723
157723
167822
178020
188020
198119
208119
218218
228218
238317
248317
258317
268416
278416
288416
298416
308317

Chance of precipitation in September

Any precipitation

São Miguel dos Campos gets around 59 mm of rain over 17.5 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 59% and peaks near 69% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
169
269
368
468
568
667
767
867
966
1066
1165
1264
1363
1462
1561
1660
1759
1857
1956
2055
2153
2252
2351
2449
2548
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 63% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
126929
226830
326830
426830
526830
626731
716831
816831
916732
1016732
1116732
1216633
1316633
1416633
1516534
1616534
1716435
1816336
1916336
2016237
2116138
2216039
2315940
2415841
2515742
2615643
2715544
2805545
2905446
3005347

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2412calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 5:30 AM to 5:11 AM, and sunset from 5:18 PM to 5:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:305:18
211.85:295:18
311.85:295:18
411.85:285:18
511.85:275:18
611.95:275:18
711.95:265:18
811.95:255:18
911.95:255:18
1011.95:245:18
1111.95:245:18
1211.95:235:17
1311.95:225:17
1411.95:225:17
1511.95:215:17
1611.95:205:17
1712.05:205:17
1812.05:195:17
1912.05:185:17
2012.05:185:17
2112.05:175:17
2212.05:165:17
2312.05:165:16
2412.05:155:16
2512.05:145:16
2612.05:145:16
2712.05:135:16
2812.15:135:16
2912.15:125:16
3012.15:115:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.46 kWh/m².

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 6.39 kWh/m² in November across the year — September's 5.46 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.4Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.6Bright
225.7Bright
235.7Bright
245.7Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for São Miguel dos Campos

In seasonPeak

None of São Miguel dos Campos'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 Miguel dos Campos'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 Miguel dos Campos?

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

5.4
Sightseeing
1st-best month of the year
5.7
Beach & pool
5th-best month of the year

September is a reasonable time to visit São Miguel dos Campos for sightseeing.

What to pack for São Miguel dos Campos in September

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

In September, São Miguel dos Campos sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near São Miguel dos Campos 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 26 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
Mar28Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct26Warm
Nov27Warm
Dec27Warm

UV index in São Miguel dos Campos 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 Miguel dos Campos peaks around March 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 11UV 15Jun 23UV 9
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is São Miguel dos Campos?

São Miguel dos Campos sits at 9.8°S, 36.1°W, 13 m above sea level, in Brazil. The nearest listed city is Boca da Mata, 21 km away.

Topography around São Miguel dos Campos

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of São Miguel dos Campos.

Within 3 km, the terrain around São Miguel dos Campos has only modest variations in elevation — a maximum elevation change of 130 m around an average of 62 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 213 m; within 80 km, large variations in elevation — a maximum elevation change of 909 m.

The land around São Miguel dos Campos is covered by grassland (45%) within 3 km, cropland (41%) and grassland (38%) within 16 km, and grassland (45%) and water (27%) within 80 km.

3 km
130 m
16 km
213 m
80 km
909 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Boca da Mata 21 km · Marechal Deodoro 23 km · Pilar 25 km · Campo Alegre 28 km · Atalaia 32 km · Teotônio Vilela 32 km · Satuba 38 km · Coruripe 39 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 Miguel dos Campos (-9.7811°, -36.0936°, elevation 13 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).