Mbandaka weather in September

In September, Mbandaka sees average daytime highs of 29°C and overnight lows near 23°C, with 189 mm of rain across 26.2 wet days and about 12 hours of daylight. It is the 10th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 6% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 hours at the start of September to 12 hours by month's end. Set against the rest of the year, September is Mbandaka's 8th-clearest and 6th-windiest month. For the whole year in context, see Mbandaka's year-round climate.

Daytime high
29°
10th warmest
Overnight low
23°
2nd coldest
Rainfall
189 mm
26.2 wet days
Daylight
12 hours
5:41 AM – 5:41 PM
Cloud cover
77%
8th clearest
Wind
5 km/h
6th windiest
Solar energy
4.94 kWh/m²
Travel score
3.2
out of 10

Mbandaka is is a port city in the Equateur Province of the Democratic Republic of Congo,.

Density
989/km²
people per km²
Founded
1883

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 29°C through the month.

A typical September day in Mbandaka reaches about 29°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, September runs on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923

How September really feels in Mbandaka

Once humidity and wind are folded in, September averages 30 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
30
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.

Mbandaka weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°8915.2123.8
Feb31° / 23°12015.9123.4
Mar31° / 23°15621.6123.1
Apr31° / 23°15923.1123.1
May30° / 23°12822.4123.4
Jun30° / 23°9217.4124.2
Jul29° / 23°9418.1124.3
Aug29° / 23°15523.5123.7
Sep29° / 23°18926.2123.2
Oct29° / 23°20526.7123.2
Nov30° / 23°18224.9123.2
Dec30° / 23°12020.1123.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 77%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12377
22377
32377
42377
52377
62377
72476
82377
92377
102377
112377
122476
132476
142476
152476
162377
172377
182377
192278
202278
212278
222179
232179
242179
252179
262179
272080
282080
292080
301981

Chance of precipitation in September

Any precipitation

Mbandaka gets around 189 mm of rain over 26.2 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 88% and peaks near 89% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
184
285
385
486
586
687
787
887
988
1088
1188
1289
1389
1489
1589
1689
1789
1889
1989
2088
2188
2288
2388
2487
2587
2687
2787
2887
2987
3088

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the oppressive band about 99% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20982
21982
22982
23982
24982
25982
26982
27982
28982
29982
30982

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 hours 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 0 minutes over September. Sunrise moves from 5:47 AM to 5:36 AM, and sunset from 5:47 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:475:47
212.05:465:46
312.05:465:46
412.05:465:46
512.05:455:45
612.05:455:45
712.05:455:45
812.05:445:44
912.05:445:44
1012.05:435:44
1112.05:435:43
1212.05:435:43
1312.05:425:42
1412.05:425:42
1512.05:425:42
1612.05:415:41
1712.05:415:41
1812.05:415:41
1912.05:405:40
2012.05:405:40
2112.05:395:39
2212.05:395:39
2312.05:395:39
2412.05:385:38
2512.05:385:38
2612.05:385:38
2712.05:375:37
2812.05:375:37
2912.05:375:37
3012.05:365:36

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.94 kWh/m².

For context, solar energy here swings from a low near 4.81 kWh/m² to a high of 5.47 kWh/m² in February across the year — September's 4.94 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.9Bright
304.9Bright
Planning a trip in September

Is September a good time to visit Mbandaka?

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

3.2
Sightseeing
8th-best month of the year
4.2
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Mbandaka.

What to pack for Mbandaka in September

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

In September, Mbandaka sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

UV index in Mbandaka 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 Mbandaka peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 18UV 13Jun 23UV 8
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun8Very high
Jul8Very high
Aug10Extreme
Sep12Extreme
Oct13Extreme
Nov9Very high
Dec9Very high

Air quality in Mbandaka 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 Mbandaka is worst in February — around 39 µg/m³ PM2.5 (poor), about 3.7× the cleanest month (October, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateModerateFeb 1537 µg/m³Oct 1611 µg/m³
PM2.5 (µg/m³)Level
Jan30Moderate
Feb39Poor
Mar29Moderate
Apr20Moderate
May19Moderate
Jun28Moderate
Jul36Poor
Aug31Moderate
Sep15Moderate
Oct10Good
Nov15Moderate
Dec24Moderate
Location & terrain

Where is Mbandaka?

Mbandaka sits at 0.0°N, 18.3°E, 315 m above sea level, in Democratic Republic of the Congo. The nearest listed city is Bolenge, 7.0 km away.

ImpfondoMossakaBasankusuInongoPokolaOwandoOyo

Topography around Mbandaka

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

Within 3 km, the terrain around Mbandaka has only modest variations in elevation — a maximum elevation change of 28 m around an average of 310 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 40 m; within 80 km, only modest variations in elevation — a maximum elevation change of 83 m.

The land around Mbandaka is covered by artificial surfaces (42%) and trees (30%) within 3 km, trees (75%) within 16 km, and trees (93%) within 80 km.

3 km
28 m
16 km
40 m
80 km
83 m
treesgrasslandartificial surfaceswaterwetland
September weather nearby: Bolenge 7.0 km · Impfondo 176 km · Mossaka 215 km · Basankusu 215 km · Inongo 220 km · Pokola 263 km · Owando 269 km · Oyo 288 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 Mbandaka (0.0486°, 18.2603°, elevation 315 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).