Cuilo weather in September

In September, Cuilo sees average daytime highs of 29°C and overnight lows near 18°C, with 106 mm of rain across 18.2 wet days and about 12 hours of daylight. It is the 5th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 30°C in the first days to 28°C by the end. The sky is clear or mostly clear about 20% of the time in September, and the air most often feels humid.

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 Cuilo's 5th-clearest and 5th-windiest month. For the whole year in context, see Cuilo's year-round climate.

Daytime high
29°
5th warmest
Overnight low
18°
9th coldest
Rainfall
106 mm
18.2 wet days
Daylight
12 hours
5:38 AM – 5:35 PM
Cloud cover
63%
5th clearest
Wind
6 km/h
5th windiest
Solar energy
5.48 kWh/m²
Travel score
4.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 30°C in the first days to 28°C by the end.

A typical September day in Cuilo reaches about 29°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 32°C. Set against its neighbours, September runs about 2°C cooler than August and about 2°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13018
23018
33018
43018
53018
63018
73018
83018
93018
103018
113018
123018
133018
142918
152918
162918
172918
182918
192918
202918
212918
222918
232918
242918
252918
262918
272918
282918
292818
302818

Cuilo weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°18826.212.43.9
Feb28° / 18°15121.812.34.1
Mar28° / 18°19025.612.13.9
Apr28° / 18°14220.111.84.6
May30° / 17°163.511.66.0
Jun30° / 16°20.511.56.2
Jul31° / 16°00.111.66.1
Aug31° / 17°183.811.75.3
Sep29° / 18°10618.2124.2
Oct28° / 18°19026.812.23.8
Nov27° / 18°21127.312.43.7
Dec27° / 18°20427.712.53.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 25% of September, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26337
36139
46040
55842
65644
75545
85248
95050
104951
114753
124654
134456
144456
154258
164159
174159
183961
193862
203862
213763
223763
233664
243664
253664
263565
273466
283367
293268
303169

Chance of precipitation in September

Any precipitation

Cuilo gets around 106 mm of rain over 18.2 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 80% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
131
233
335
437
539
641
744
846
949
1051
1154
1256
1358
1460
1562
1664
1766
1867
1969
2071
2172
2273
2374
2475
2576
2677
2778
2879
2980
3080

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

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12728378
22527389
323264010
422254211
520244313
618234514
717224616
815204718
914194820
1012174922
1111154924
1210144927
139124930
147114933
156104836
16594739
17484642
18474446
19364249
20254053
21253855
22143659
23143461
24043264
25033067
26032869
27032671
28032473
29032275
30022078

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 5:46 AM to 5:29 AM, and sunset from 5:37 PM to 5:33 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.85:465:37
211.85:465:37
311.95:455:37
411.95:455:36
511.95:445:36
611.95:445:36
711.95:435:36
811.95:425:36
911.95:425:36
1011.95:415:36
1111.95:415:36
1211.95:405:35
1311.95:395:35
1411.95:395:35
1511.95:385:35
1612.05:385:35
1712.05:375:35
1812.05:365:35
1912.05:365:34
2012.05:355:34
2112.05:355:34
2212.05:345:34
2312.05:335:34
2412.05:335:34
2512.05:325:34
2612.05:325:34
2712.05:315:33
2812.05:305:33
2912.15:305:33
3012.15:295:33

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.48 kWh/m².

For context, solar energy here swings from a low near 5 kWh/m² to a high of 5.74 kWh/m² in July across the year — September's 5.48 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.6Bright
Planning a trip in September

Hazard calendar for Cuilo

In seasonPeak

In September, Cuilo sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Cuilo's rainy season runs September–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 Cuilo?

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

4.2
Sightseeing
6th-best month of the year
5.6
Beach & pool
5th-best month of the year

September is a reasonable time to visit Cuilo for sightseeing.

What to pack for Cuilo in September

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

In September, Cuilo sees daytime highs around 29°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Cuilo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Cuilo peaks around January 20 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeJan 20UV 16Jul 24UV 7
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May10Very high
Jun8Very high
Jul7Very high
Aug7Very high
Sep11Extreme
Oct14Extreme
Nov12Extreme
Dec13Extreme

Air quality in Cuilo 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 Cuilo is worst in July — around 232 µg/m³ PM2.5 (very unhealthy), about 26.4× the cleanest month (April, 9 µg/m³).

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

0306090120150180210240JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateUnhealthyVery unhealthyUnhealthyModerateGoodJul 17216 µg/m³Nov 229 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb14Moderate
Mar11Good
Apr9Good
May25Moderate
Jun96Unhealthy
Jul232Very unhealthy
Aug104Unhealthy
Sep28Moderate
Oct14Moderate
Nov9Good
Dec10Good
Location & terrain

Where is Cuilo?

Cuilo sits at 8.2°S, 19.5°E, 1,059 m above sea level, in Angola. The nearest listed city is Lubalo, 106 km away.

LubaloLucapaChitatoDundoCafunfoSaurimoCuango-LuzambaCassanguidi

Topography around Cuilo

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

Within 3 km, the terrain around Cuilo has only modest variations in elevation — a maximum elevation change of 87 m around an average of 1,042 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 127 m; within 80 km, significant variations in elevation — a maximum elevation change of 539 m.

The land around Cuilo is covered by grassland (47%), trees (24%) and shrubs (24%) within 3 km, grassland (55%) and trees (29%) within 16 km, and grassland (53%) and trees (41%) within 80 km.

3 km
87 m
16 km
127 m
80 km
539 m
treesshrubsgrasslandartificial surfaceswetland
September weather nearby: Lubalo 106 km · Lucapa 136 km · Chitato 169 km · Dundo 172 km · Cafunfo 178 km · Saurimo 185 km · Cuango-Luzamba 192 km · Cassanguidi 213 km

Angola travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$3,129
2025
Happiness
3.8 / 10
World Happiness, 2017
Homicide rate
4.1
per 100k, 2016
Road deaths
26.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 413
Religion
Roman Catholic 41%Protestant 38%none 12%other 9%

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 Cuilo (-8.2362°, 19.5257°, elevation 1,059 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. 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).