Kasangulu weather in September

In September, Kasangulu sees average daytime highs of 31°C and overnight lows near 22°C, with 16 mm of rain across 5.1 wet days and about 12 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 7% 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 Kasangulu's 5th-clearest and 2nd-windiest month. For the whole year in context, see Kasangulu's year-round climate.

Daytime high
31°
3rd warmest
Overnight low
22°
4th coldest
Rainfall
16 mm
5.1 wet days
Daylight
12 hours
5:54 AM – 5:53 PM
Cloud cover
72%
5th clearest
Wind
7 km/h
2nd windiest
Solar energy
4.78 kWh/m²
Travel score
4.9
out of 10

Kasangulu is place in Kongo Central, Democratic Republic of the Congo.

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 31°C through the month.

A typical September day in Kasangulu reaches about 31°C in the afternoon and slips back to 22°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 33°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73021
83021
93021
103021
113121
123121
133122
143122
153122
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122

How September really feels in Kasangulu

Once humidity and wind are folded in, September averages 17 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
17
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Kasangulu weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 22°12020.212.23.7
Feb31° / 23°10416.612.13.6
Mar31° / 23°12219.6123.3
Apr31° / 23°16122.911.93.0
May30° / 22°8215.811.84.2
Jun29° / 21°41.211.76.4
Jul29° / 20°10.111.86.7
Aug29° / 20°40.911.96.1
Sep31° / 22°165.1124.9
Oct31° / 22°11819.312.13.6
Nov30° / 22°18925.212.23.2
Dec29° / 22°15624.612.33.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12278
22278
32377
42377
52377
62476
72476
82575
92575
102575
112773
122773
132773
142872
152872
162872
172872
182872
192971
202971
212971
222971
232971
243070
253070
263169
273169
283169
293169
303169

Chance of precipitation in September

Any precipitation

Kasangulu gets around 16 mm of rain over 5.1 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 18% and peaks near 29% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
17
28
38
49
59
610
711
812
913
1014
1115
1216
1317
1418
1518
1619
1720
1820
1921
2021
2122
2222
2323
2423
2524
2625
2725
2827
2928
3029

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 73% of days. Sticky, muggy-or-worse air turns up on roughly 75% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)
156440
254460
352480
450500
547530
645550
742580
839610
936640
1033661
1130691
1227721
1325741
1422762
1520782
1618802
1716813
1814833
1913843
2012844
2111854
2210864
2310855
249865
259865
268866
278857
287867
297858
3068410

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 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
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:02 AM to 5:48 AM, and sunset from 5:56 PM to 5:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.96:025:56
211.96:015:56
311.96:015:56
411.96:005:56
511.96:005:56
611.95:595:55
711.95:595:55
811.95:585:55
911.95:585:55
1011.95:575:54
1112.05:575:54
1212.05:565:54
1312.05:565:54
1412.05:555:53
1512.05:555:53
1612.05:545:53
1712.05:545:53
1812.05:535:52
1912.05:535:52
2012.05:525:52
2112.05:525:52
2212.05:515:51
2312.05:515:51
2412.05:505:51
2512.05:505:51
2612.05:495:51
2712.05:495:50
2812.05:495:50
2912.05:485:50
3012.05:485:50

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.78 kWh/m².

For context, solar energy here swings from a low near 4.47 kWh/m² to a high of 5.29 kWh/m² in March across the year — September's 4.78 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.7Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
Planning a trip in September

Hazard calendar for Kasangulu

In seasonPeak

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

Kasangulu's rainy season runs October–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 Kasangulu?

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

4.9
Sightseeing
4th-best month of the year
7.1
Beach & pool
4th-best month of the year

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

What to pack for Kasangulu in September

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

In September, Kasangulu sees daytime highs around 31°C and nights near 22°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

UV index in Kasangulu 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 Kasangulu peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near August 11 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighExtremeMar 17UV 15Aug 11UV 6
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr13Extreme
May9Very high
Jun7High
Jul7High
Aug6High
Sep10Very high
Oct13Extreme
Nov12Extreme
Dec10Very high

Air quality in Kasangulu 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 Kasangulu is worst in June — around 60 µg/m³ PM2.5 (unhealthy), about 1.8× the cleanest month (January, 33 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJun 2259 µg/m³Jan 1433 µg/m³
PM2.5 (µg/m³)Level
Jan33Moderate
Feb36Poor
Mar36Poor
Apr39Poor
May53Poor
Jun60Unhealthy
Jul59Unhealthy
Aug55Poor
Sep58Unhealthy
Oct45Poor
Nov33Moderate
Dec34Moderate
Location & terrain

Where is Kasangulu?

Kasangulu sits at 4.6°S, 15.2°E, 413 m above sea level, in Democratic Republic of the Congo. The nearest listed city is Kinshasa, 33 km away.

KimpeseLoutétéMouyondzi

Topography around Kasangulu

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

Within 3 km, the terrain around Kasangulu has only modest variations in elevation — a maximum elevation change of 154 m around an average of 415 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 417 m; within 80 km, large variations in elevation — a maximum elevation change of 631 m.

The land around Kasangulu is covered by trees (36%) and grassland (35%) within 3 km, trees (46%) and grassland (34%) within 16 km, and grassland (48%) and trees (38%) within 80 km.

3 km
154 m
16 km
417 m
80 km
631 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Kinshasa 33 km · Masina 33 km · Brazzaville 38 km · Inkisi 62 km · Mbanza-Ngungu 82 km · Kimpese 136 km · Loutété 149 km · Mouyondzi 152 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 Kasangulu (-4.5833°, 15.1655°, elevation 413 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).