Yaoundé weather in September

In September, Yaoundé sees average daytime highs of 27°C and overnight lows near 20°C, with 184 mm of rain across 26.6 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 27°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Yaoundé's 10th-clearest and 4th-windiest month. For the whole year in context, see Yaoundé's year-round climate.

Daytime high
27°
10th warmest
Overnight low
20°
5th coldest
Rainfall
184 mm
26.6 wet days
Daylight
12 hours
6:08 AM – 6:09 PM
Cloud cover
86%
10th clearest
Wind
8 km/h
4th windiest
Solar energy
4.14 kWh/m²
Travel score
3.7
out of 10

Yaoundé is capital of Cameroon.

Density
7,219/km²
people per km²
Founded
1888

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 27°C through the month.

A typical September day in Yaoundé reaches about 27°C in the afternoon and slips back to 20°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12720
22720
32720
42720
52720
62720
72720
82720
92720
102720
112720
122720
132720
142720
152720
162720
172720
182720
192720
202720
212720
222720
232720
242720
252720
262720
272720
282720
292720
302720

How September really feels in Yaoundé

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.

Yaoundé 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
Jan30° / 20°408.511.85.3
Feb31° / 21°5410.311.94.4
Mar30° / 21°12820.2123.6
Apr29° / 21°17023.812.13.4
May29° / 21°17225.612.23.6
Jun27° / 20°15124.112.24.1
Jul26° / 20°12022.312.24.5
Aug26° / 20°12122.712.14.4
Sep27° / 20°18426.6123.7
Oct27° / 20°24429.111.93.5
Nov28° / 20°17322.411.84.3
Dec28° / 20°541111.85.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

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 (%)
1397
2397
3397
4397
5397
6397
7397
8397
9496
10496
11496
12496
13496
14595
15595
16595
17595
18595
19595
20694
21694
22694
23694
24595
25595
26595
27595
28595
29595
30595

Chance of precipitation in September

Any precipitation

Yaoundé gets around 184 mm of rain over 26.6 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 89% and peaks near 92% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
183
284
384
485
585
686
786
887
987
1087
1188
1288
1388
1489
1589
1689
1790
1890
1990
2090
2191
2291
2391
2491
2591
2692
2792
2892
2992
3092

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 93% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
1991
2982
3982
4982
5973
6973
7964
8964
9964
10955
11955
12946
13946
14937
15937
16928
17928
18928
19919
20919
21919
22919
239010
249010
259010
268911
278911
288812
298812
308713

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 6:11 AM to 6:04 AM, and sunset from 6:16 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:116:16
212.16:116:15
312.16:116:15
412.16:116:15
512.16:106:14
612.16:106:14
712.16:106:13
812.06:106:13
912.06:096:12
1012.06:096:12
1112.06:096:11
1212.06:096:11
1312.06:086:10
1412.06:086:10
1512.06:086:09
1612.06:086:09
1712.06:076:08
1812.06:076:08
1912.06:076:07
2012.06:076:07
2112.06:066:06
2212.06:066:06
2312.06:066:06
2412.06:066:05
2512.06:056:05
2612.06:056:04
2712.06:056:04
2812.06:056:03
2912.06:046:03
3012.06:046:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.14 kWh/m².

For context, solar energy here swings from a low near 3.95 kWh/m² to a high of 5.17 kWh/m² in February across the year — September's 4.14 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.1Bright
284.1Bright
294.1Bright
304.1Bright
Planning a trip in September

Hazard calendar for Yaoundé

In seasonPeak

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

Yaoundé sees seasonal dust haze (February–March), heaviest in March.

Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Yaoundé?

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

3.7
Sightseeing
8th-best month of the year
3.8
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Yaoundé.

What to pack for Yaoundé in September

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

In September, Yaoundé sees daytime highs around 27°C and nights near 20°C. Pack rain gear. Worth having: light clothes. About 27 days see rain.

rain gearlight clothes

UV index in Yaoundé in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Yaoundé peaks around March 22 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 22UV 14Dec 19UV 10
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec10Very high

Air quality in Yaoundé 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 Yaoundé is worst in February — around 63 µg/m³ PM2.5 (unhealthy), about 5.3× the cleanest month (September, 12 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModerateFeb 1361 µg/m³Sep 1212 µg/m³
PM2.5 (µg/m³)Level
Jan50Poor
Feb63Unhealthy
Mar39Poor
Apr30Moderate
May21Moderate
Jun18Moderate
Jul16Moderate
Aug14Moderate
Sep12Good
Oct17Moderate
Nov24Moderate
Dec40Poor
Location & terrain

Where is Yaoundé?

Yaoundé sits at 3.9°N, 11.5°E, 726 m above sea level, in Cameroon. The nearest listed city is Okoa, 16 km away.

MbandjokAkonolingaEsékaNkoteng

Topography around Yaoundé

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

Within 3 km, the terrain around Yaoundé has only modest variations in elevation — a maximum elevation change of 113 m around an average of 734 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 594 m; within 80 km, large variations in elevation — a maximum elevation change of 1,054 m.

The land around Yaoundé is covered by artificial surfaces (88%) within 3 km, trees (57%) and artificial surfaces (29%) within 16 km, and trees (89%) within 80 km.

3 km
113 m
16 km
594 m
80 km
1,054 m
treesgrasslandartificial surfaceswater
September weather nearby: Okoa 16 km · Obala 33 km · Mbalmayo 39 km · Makak 64 km · Mbandjok 78 km · Akonolinga 82 km · Eséka 87 km · Nkoteng 92 km

Cameroon travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$1,972
2025
Happiness
5.1 / 10
World Happiness, 2025
Homicide rate
6.8
per 100k, 2022
Road deaths
30.2
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 445
Religion
Roman Catholic 33%Muslim 31%Protestant 27%animist 1%

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 Yaoundé (3.8667°, 11.5167°, elevation 726 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).