Matadi weather in September

In September, Matadi sees average daytime highs of 27°C and overnight lows near 20°C, with 12 mm of rain across 3.2 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 27°C through the month. The sky is clear or mostly clear about 1% of the time in September, and the air most often feels muggy.

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 Matadi's 12th-clearest and 1st-windiest month. For the whole year in context, see Matadi's year-round climate.

Daytime high
27°
9th warmest
Overnight low
20°
4th coldest
Rainfall
12 mm
3.2 wet days
Daylight
12 hours
6:01 AM – 6:00 PM
Cloud cover
86%
12th clearest
Wind
8 km/h
1st windiest
Solar energy
3.22 kWh/m²
Travel score
6.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Matadi reaches about 27°C in the afternoon and slips back to 20°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12619
22620
32620
42620
52620
62620
72620
82620
92620
102620
112620
122620
132620
142620
152620
162720
172720
182720
192720
202720
212720
222720
232721
242721
252721
262721
272721
282721
292721
302721

How September really feels in Matadi

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.

Matadi 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° / 23°14920.412.33.8
Feb30° / 23°11917.612.23.7
Mar30° / 23°13419.1123.6
Apr30° / 23°19321.811.93.4
May29° / 23°681211.75.3
Jun27° / 20°20.311.77.7
Jul26° / 18°20.111.77.9
Aug25° / 19°50.811.87.5
Sep27° / 20°123.2126.9
Oct28° / 22°6311.812.15.3
Nov29° / 23°14921.812.33.7
Dec29° / 23°17522.412.33.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 96%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2397
3397
4397
5397
6397
7397
8397
9397
10397
11496
12496
13496
14496
15496
16496
17496
18496
19496
20496
21595
22595
23595
24595
25595
26595
27694
28694
29694
30694

Chance of precipitation in September

Any precipitation

Matadi gets around 12 mm of rain over 3.2 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 11% and peaks near 14% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
15
25
36
46
57
67
78
88
99
109
1110
1210
1311
1411
1511
1612
1712
1812
1913
2013
2113
2213
2313
2413
2513
2613
2713
2814
2914
3014

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 88% of days. Sticky, muggy-or-worse air turns up on roughly 89% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
128720
226740
324760
422780
520800
618820
717830
816840
915850
1014860
1113870
1212880
1311881
1410891
1510891
169901
178911
188911
197921
207921
216931
226931
235941
244951
254942
263952
273943
282953
292944
301945

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 6:09 AM to 5:54 AM, and sunset from 6:02 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:096:02
211.96:096:02
311.96:086:02
411.96:086:02
511.96:076:02
611.96:076:02
711.96:066:01
811.96:066:01
911.96:056:01
1011.96:056:01
1111.96:046:01
1211.96:046:00
1312.06:036:00
1412.06:026:00
1512.06:026:00
1612.06:016:00
1712.06:015:59
1812.06:005:59
1912.06:005:59
2012.05:595:59
2112.05:595:58
2212.05:585:58
2312.05:585:58
2412.05:575:58
2512.05:575:58
2612.05:565:58
2712.05:565:57
2812.05:555:57
2912.05:555:57
3012.05:545:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.22 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.22 kWh/m² to a high of 4.98 kWh/m² in March across the year — September's 3.22 kWh/m² sits near the bottom.

01234151015202530
Solar energy (kWh/m²)Level
13.1Moderate
23.1Moderate
33.1Moderate
43.1Moderate
53.1Moderate
63.2Moderate
73.2Moderate
83.2Moderate
93.2Moderate
103.2Moderate
113.2Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.2Moderate
163.2Moderate
173.2Moderate
183.2Moderate
193.3Moderate
203.3Moderate
213.3Moderate
223.3Moderate
233.3Moderate
243.3Moderate
253.3Moderate
263.3Moderate
273.3Moderate
283.4Moderate
293.4Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Matadi

In seasonPeak

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

Matadi'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 Matadi?

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

6.9
Sightseeing
4th-best month of the year
6.9
Beach & pool
4th-best month of the year

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

What to pack for Matadi in September

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

In September, Matadi sees daytime highs around 27°C and nights near 20°C. Worth packing: light clothes. About 3 days see rain.

light clothes

UV index in Matadi 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 Matadi peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 19 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 15UV 15Jul 19UV 6
UV index (midday)Level
Jan14Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May8Very high
Jun7High
Jul6High
Aug7High
Sep10Very high
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Matadi 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 Matadi is worst in July — around 38 µg/m³ PM2.5 (poor), about 3.4× the cleanest month (November, 11 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateModerateJul 2338 µg/m³Nov 1911 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb15Moderate
Mar14Moderate
Apr14Moderate
May22Moderate
Jun32Moderate
Jul38Poor
Aug38Poor
Sep28Moderate
Oct15Moderate
Nov11Good
Dec13Moderate
Location & terrain

Where is Matadi?

Matadi sits at 5.8°S, 13.5°E, 183 m above sea level, in Democratic Republic of the Congo. The nearest listed city is Kenge, 23 km away.

MoandaSoyo

Topography around Matadi

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

Within 3 km, the terrain around Matadi has significant variations in elevation — a maximum elevation change of 504 m around an average of 191 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 544 m; within 80 km, large variations in elevation — a maximum elevation change of 702 m.

The land around Matadi is covered by artificial surfaces (67%) within 3 km, grassland (62%) and trees (27%) within 16 km, and grassland (52%) and trees (43%) within 80 km.

3 km
504 m
16 km
544 m
80 km
702 m
treesshrubsgrasslandartificial surfaceswaterwetland
September weather nearby: Kenge 23 km · Boma 45 km · Mbanza Kongo 98 km · Tombôco 108 km · Tshela 110 km · Kimpese 112 km · Moanda 121 km · Soyo 125 km

Democratic Republic of the Congo travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 42% of US
price level, 2025
GDP per capita
$807
2025
Happiness
3.8 / 10
World Happiness, 2025
Safe drinking water
12%
of population, 2024
Road deaths
34.9
per 100k/yr, 2019
Income group
Low
World Bank
English
Very low
EF EPI 400

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 Matadi (-5.8386°, 13.4631°, elevation 183 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).