Mbanza Kongo weather in September

In September, Mbanza Kongo sees average daytime highs of 28°C and overnight lows near 20°C, with 11 mm of rain across 3.5 wet days and about 12 hours of daylight. It is the 9th-warmest and 9th-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 2% of the time in September, and the air most often feels humid.

Daylight stretches from about 11 h 54 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Mbanza Kongo's 5th-clearest and 1st-windiest month. For the whole year in context, see Mbanza Kongo's year-round climate.

Daytime high
28°
9th warmest
Overnight low
20°
4th coldest
Rainfall
11 mm
3.5 wet days
Daylight
12 hours
5:58 AM – 5:56 PM
Cloud cover
79%
5th clearest
Wind
8 km/h
1st windiest
Solar energy
3.98 kWh/m²
Travel score
6.8
out of 10

Mbanza Kongo is capital of Angola's northwestern Zaire Province.

Founded
1390

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 28°C through the month.

A typical September day in Mbanza Kongo reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12719
22719
32719
42719
52719
62719
72719
82719
92719
102719
112719
122719
132819
142819
152820
162820
172820
182820
192820
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820

How September really feels in Mbanza Kongo

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.

Mbanza Kongo weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 21°15421.612.33.9
Feb30° / 22°12617.812.23.9
Mar30° / 22°15220.4123.6
Apr30° / 22°22924.411.93.3
May29° / 21°9014.611.75.1
Jun27° / 19°20.511.67.9
Jul27° / 17°00.111.78.1
Aug27° / 18°30.811.87.6
Sep28° / 20°113.5126.8
Oct29° / 21°9115.112.14.8
Nov29° / 21°20724.212.33.5
Dec29° / 21°20124.512.43.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11387
21387
31288
41288
51288
61288
71288
81189
91288
101288
111288
121288
131288
141288
151288
161288
171288
181288
191288
201288
211288
221288
231288
241288
251288
261288
271288
281288
291288
301288

Chance of precipitation in September

Any precipitation

Mbanza Kongo gets around 11 mm of rain over 3.5 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 12% and peaks near 18% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
16
27
37
48
58
69
79
810
910
1010
1111
1211
1311
1411
1512
1612
1712
1812
1912
2013
2113
2213
2313
2414
2514
2615
2716
2816
2917
3018

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 56% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1383140
2283150
3282160
4281170
5279190
6179200
7177220
8175240
9172270
10170290
11167320
12065350
13063370
14060400
15057430
16054460
17051490
18048520
19046540
20043570
21041590
22039610
23038620
24036640
25035650
26034660
27032680
28031690
29029701
30028711

Wind in September

Winds average 8 km/h in September, the windiest month of the year.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 54 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over September. Sunrise moves from 6:06 AM to 5:51 AM, and sunset from 5:59 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:065:59
211.96:065:59
311.96:055:59
411.96:055:59
511.96:045:58
611.96:045:58
711.96:035:58
811.96:035:58
911.96:025:58
1011.96:025:58
1111.96:015:57
1211.96:015:57
1311.96:005:57
1412.05:595:57
1512.05:595:57
1612.05:585:56
1712.05:585:56
1812.05:575:56
1912.05:575:56
2012.05:565:56
2112.05:565:55
2212.05:555:55
2312.05:555:55
2412.05:545:55
2512.05:535:55
2612.05:535:54
2712.05:525:54
2812.05:525:54
2912.05:515:54
3012.05:515:54

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.98 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.98 kWh/m² to a high of 5.26 kWh/m² in March across the year — September's 3.98 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Moderate
44.0Moderate
54.0Moderate
64.0Moderate
74.0Moderate
84.0Moderate
94.0Moderate
104.0Moderate
114.0Moderate
124.0Moderate
134.0Moderate
144.0Moderate
154.0Moderate
164.0Moderate
174.0Moderate
184.0Moderate
194.0Bright
204.0Bright
214.0Bright
224.0Bright
234.0Bright
244.0Bright
254.0Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.0Bright
Planning a trip in September

Hazard calendar for Mbanza Kongo

In seasonPeak

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

Mbanza Kongo's rainy season runs November–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 Mbanza Kongo?

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

6.8
Sightseeing
4th-best month of the year
7.2
Beach & pool
4th-best month of the year

September is a reasonable time to visit Mbanza Kongo for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mbanza Kongo in September

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

In September, Mbanza Kongo sees daytime highs around 28°C and nights near 20°C. Pack light clothes. About 4 days see rain.

light clothes

UV index in Mbanza Kongo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mbanza Kongo peaks around March 14 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 24 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeMar 14UV 15Jul 24UV 6
UV index (midday)Level
Jan15Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May9Very high
Jun8Very high
Jul6High
Aug6High
Sep10Very high
Oct13Extreme
Nov12Extreme
Dec11Extreme

Air quality in Mbanza Kongo 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 Mbanza Kongo is worst in July — around 56 µg/m³ PM2.5 (unhealthy), about 5.4× the cleanest month (November, 10 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateGoodJul 2256 µg/m³Nov 2011 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar14Moderate
Apr13Moderate
May24Moderate
Jun44Poor
Jul56Unhealthy
Aug55Poor
Sep38Poor
Oct16Moderate
Nov10Good
Dec12Moderate
Location & terrain

Where is Mbanza Kongo?

Mbanza Kongo sits at 6.3°S, 14.2°E, 531 m above sea level, in Angola. The nearest listed city is Cuímba, 45 km away.

MatadiMaquela do ZomboTombôcoMbanza-NgunguSongo

Topography around Mbanza Kongo

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

Within 3 km, the terrain around Mbanza Kongo has only modest variations in elevation — a maximum elevation change of 171 m around an average of 475 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 369 m; within 80 km, large variations in elevation — a maximum elevation change of 991 m.

The land around Mbanza Kongo is covered by grassland (32%), shrubs (27%) and artificial surfaces (25%) within 3 km, grassland (47%) and trees (36%) within 16 km, and grassland (67%) and trees (28%) within 80 km.

3 km
171 m
16 km
369 m
80 km
991 m
treesshrubsgrasslandartificial surfaces
September weather nearby: Cuímba 45 km · Kimpese 81 km · Kenge 85 km · Matadi 98 km · Maquela do Zombo 99 km · Tombôco 117 km · Mbanza-Ngungu 131 km · Songo 138 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 Mbanza Kongo (-6.2667°, 14.2383°, elevation 531 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).