Cabo de Santo Agostinho weather in September

In September, Cabo de Santo Agostinho sees average daytime highs of 26°C and overnight lows near 23°C, with 65 mm of rain across 18.8 wet days and about 12 hours of daylight. It is the 10th-warmest and 9th-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 55% 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 Cabo de Santo Agostinho's 1st-clearest and 2nd-windiest month. For the whole year in context, see Cabo de Santo Agostinho's year-round climate.

Daytime high
26°
10th warmest
Overnight low
23°
3rd coldest
Rainfall
65 mm
18.8 wet days
Daylight
12 hours
5:16 AM – 5:13 PM
Cloud cover
41%
1st clearest
Wind
18 km/h
2nd windiest
Solar energy
5.42 kWh/m²
Travel score
5.6
out of 10

Cabo de Santo Agostinho 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 26°C through the month.

A typical September day in Cabo de Santo Agostinho reaches about 26°C in the afternoon and slips back to 23°C overnight — a 3°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 on par with October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12623
22623
32623
42623
52623
62623
72623
82623
92623
102623
112623
122623
132623
142623
152623
162623
172623
182623
192623
202623
212623
222623
232623
242623
252623
262723
272723
282723
292723
302723

Cabo de Santo Agostinho weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°6719.712.45.0
Feb28° / 25°7417.812.34.7
Mar28° / 25°9420.612.14.6
Apr28° / 25°13122.711.84.4
May27° / 24°16624.511.64.5
Jun26° / 23°19425.211.54.4
Jul26° / 23°16925.611.64.6
Aug26° / 22°10322.511.75.1
Sep26° / 23°6518.8125.6
Oct27° / 23°4616.412.25.9
Nov28° / 24°3714.512.45.9
Dec28° / 24°4315.512.55.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 55% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 35% of September, with mostly cloudy or overcast conditions the remaining 11%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
18614
28614
38614
48614
58614
68614
78614
88614
98614
108713
118713
128713
138812
148911
158911
168911
179010
189010
19919
20928
21928
22928
23928
24928
25928
26928
27928
28928
29928
30919

Chance of precipitation in September

Any precipitation

Cabo de Santo Agostinho gets around 65 mm of rain over 18.8 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 63% 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 (%)
170
270
370
470
570
671
771
871
970
1070
1170
1269
1368
1467
1566
1664
1763
1861
1960
2058
2157
2256
2354
2453
2552
2651
2751
2851
2951
3051

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 67% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
137126
237027
337027
427028
527028
626929
726929
826929
926830
1026830
1126830
1226830
1326830
1426830
1526830
1626830
1726830
1826830
1926830
2026830
2116831
2216831
2316732
2416633
2516633
2616534
2716336
2816237
2916138
3016039

Wind in September

Winds average 18 km/h in September.

Across September, daily wind ranges from about 17 km/h on the calmest days to 18 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1318light breeze
1418light breeze
1518light breeze
1618light breeze
1718light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light 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 5:25 AM to 5:07 AM, and sunset from 5:15 PM to 5:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:255:15
211.85:245:15
311.95:245:15
411.95:235:15
511.95:225:15
611.95:225:14
711.95:215:14
811.95:215:14
911.95:205:14
1011.95:195:14
1111.95:195:14
1211.95:185:14
1311.95:185:14
1411.95:175:13
1511.95:165:13
1612.05:165:13
1712.05:155:13
1812.05:155:13
1912.05:145:13
2012.05:135:13
2112.05:135:12
2212.05:125:12
2312.05:125:12
2412.05:115:12
2512.05:105:12
2612.05:105:12
2712.05:095:12
2812.05:095:12
2912.15:085:11
3012.15:075:11

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.42 kWh/m².

For context, solar energy here swings from a low near 4.06 kWh/m² to a high of 5.97 kWh/m² in November across the year — September's 5.42 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.4Bright
155.4Bright
165.4Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.7Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
Planning a trip in September

Hazard calendar for Cabo de Santo Agostinho

In seasonPeak

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

Cabo de Santo Agostinho'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 Cabo de Santo Agostinho?

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

5.6
Sightseeing
4th-best month of the year
5.4
Beach & pool
7th-best month of the year

September is a reasonable time to visit Cabo de Santo Agostinho for sightseeing.

What to pack for Cabo de Santo Agostinho in September

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

In September, Cabo de Santo Agostinho sees daytime highs around 26°C and nights near 23°C. Pack rain gear. Worth having: light clothes and sun protection. About 19 days see rain.

rain gearlight clothessun protection

Sea temperature near Cabo de Santo Agostinho 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 20 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
Dec28Warm

UV index in Cabo de Santo Agostinho 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 Cabo de Santo Agostinho peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 14 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 14UV 15Jul 14UV 10
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov12Extreme
Dec12Extreme
Location & terrain

Where is Cabo de Santo Agostinho?

Cabo de Santo Agostinho sits at 8.3°S, 35.0°W, 35 m above sea level, in Brazil. The nearest listed city is Porto de Galinhas, 13 km away.

Topography around Cabo de Santo Agostinho

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Cabo de Santo Agostinho.

Within 3 km, the terrain around Cabo de Santo Agostinho has only modest variations in elevation — a maximum elevation change of 123 m around an average of 22 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 250 m; within 80 km, large variations in elevation — a maximum elevation change of 874 m.

The land around Cabo de Santo Agostinho is covered by trees (40%), artificial surfaces (31%) and grassland (26%) within 3 km, trees (35%) and grassland (28%) within 16 km, and grassland (40%) and water (32%) within 80 km.

3 km
123 m
16 km
250 m
80 km
874 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Porto de Galinhas 13 km · Jaboatão dos Guararapes 20 km · Moreno 20 km · Escada 23 km · Camaragibe 30 km · Recife 31 km · São Lourenço da Mata 32 km · Vitória de Santo Antão 34 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 Cabo de Santo Agostinho (-8.2877°, -35.0292°, elevation 35 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).