Dassa-Zoumè weather in September

In September, Dassa-Zoumè sees average daytime highs of 30°C and overnight lows near 23°C, with 175 mm of rain across 23 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 30°C through the month. The sky is clear or mostly clear about 0% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Dassa-Zoumè's 10th-clearest and 10th-windiest month. For the whole year in context, see Dassa-Zoumè's year-round climate.

Daytime high
30°
10th warmest
Overnight low
23°
5th coldest
Rainfall
175 mm
23 wet days
Daylight
12 hours
6:44 AM – 6:47 PM
Cloud cover
79%
10th clearest
Wind
6 km/h
10th windiest
Solar energy
4.29 kWh/m²
Travel score
3.3
out of 10

Dassa-Zoumè is commune and city in Collines Department, Benin.

Density
17/km²
people per km²
Founded
1200

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 30°C through the month.

A typical September day in Dassa-Zoumè reaches about 30°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 28°C and 32°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12923
22923
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273123
283123
293123
303123

How September really feels in Dassa-Zoumè

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.

Dassa-Zoumè 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
Jan34° / 22°61.311.63.7
Feb35° / 24°173.211.72.7
Mar35° / 25°49911.92.3
Apr34° / 25°871412.22.5
May33° / 24°12919.112.32.7
Jun31° / 23°1502212.43.1
Jul30° / 23°16923.412.43.5
Aug29° / 23°18122.412.33.7
Sep30° / 23°17523123.3
Oct32° / 23°9616.511.83.5
Nov34° / 23°184.211.63.6
Dec34° / 23°51.311.63.8

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 13% of September, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1991
2991
31090
41090
51189
61189
71288
81288
91387
101387
111387
121486
131486
141486
151486
161585
171585
181684
191684
201684
211684
221684
231684
241684
251684
261684
271684
281684
291684
301684

Chance of precipitation in September

Any precipitation

Dassa-Zoumè gets around 175 mm of rain over 23 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 76% and peaks near 81% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
180
280
380
481
581
681
780
880
980
1080
1179
1279
1379
1478
1578
1677
1777
1876
1975
2075
2174
2273
2373
2472
2571
2671
2770
2870
2969
3069

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
Muggy (%)Oppressive (%)Miserable (%)
12980
21990
31990
41990
51990
61990
71990
81990
91990
1001000
1101000
1201000
1301000
1401000
1501000
1601000
1701000
180991
190991
200991
210991
220991
230991
240991
250991
260991
270982
280982
290982
300982

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 06 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over September. Sunrise moves from 6:46 AM to 6:42 AM, and sunset from 6:55 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:466:55
212.16:466:55
312.16:466:54
412.16:466:54
512.16:466:53
612.16:466:53
712.16:466:52
812.16:466:52
912.16:456:51
1012.16:456:50
1112.16:456:50
1212.16:456:49
1312.16:456:49
1412.16:456:48
1512.06:446:47
1612.06:446:47
1712.06:446:46
1812.06:446:46
1912.06:446:45
2012.06:446:44
2112.06:446:44
2212.06:436:43
2312.06:436:43
2412.06:436:42
2512.06:436:42
2612.06:436:41
2712.06:436:40
2812.06:436:40
2911.96:436:39
3011.96:426:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.29 kWh/m².

For context, solar energy here swings from a low near 3.92 kWh/m² to a high of 5.89 kWh/m² in February across the year — September's 4.29 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.3Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.3Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
Planning a trip in September

Hazard calendar for Dassa-Zoumè

In seasonPeak

In September, Dassa-Zoumè sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Dassa-Zoumè's monsoon runs April–October, when most of the year's rain falls.

Dassa-Zoumè sees seasonal dust haze (January–April), heaviest in February.

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

Is September a good time to visit Dassa-Zoumè?

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

3.3
Sightseeing
7th-best month of the year
4.5
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Dassa-Zoumè.

What to pack for Dassa-Zoumè in September

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

In September, Dassa-Zoumè sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 23 days see rain.

light clothesrain gear

UV index in Dassa-Zoumè 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 Dassa-Zoumè peaks around April 11 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 11UV 13Dec 18UV 7
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar13Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep12Extreme
Oct12Extreme
Nov9Very high
Dec7High

Air quality in Dassa-Zoumè 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 Dassa-Zoumè is worst in January — around 97 µg/m³ PM2.5 (unhealthy), about 4.2× the cleanest month (August, 23 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 1796 µg/m³Aug 1323 µg/m³
PM2.5 (µg/m³)Level
Jan97Unhealthy
Feb87Unhealthy
Mar46Poor
Apr42Poor
May28Moderate
Jun26Moderate
Jul24Moderate
Aug23Moderate
Sep26Moderate
Oct35Moderate
Nov43Poor
Dec85Unhealthy
Location & terrain

Where is Dassa-Zoumè?

Dassa-Zoumè sits at 7.8°N, 2.2°E, 156 m above sea level, in Benin. The nearest listed city is Glazoué, 25 km away.

SavéDjidjaKpozounCovéKétouBohicon

Topography around Dassa-Zoumè

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

Within 3 km, the terrain around Dassa-Zoumè has significant variations in elevation — a maximum elevation change of 268 m around an average of 162 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 378 m; within 80 km, significant variations in elevation — a maximum elevation change of 526 m.

The land around Dassa-Zoumè is covered by trees (27%), shrubs (24%) and cropland (23%) within 3 km, shrubs (44%), cropland (22%) and trees (20%) within 16 km, and shrubs (44%) and trees (32%) within 80 km.

3 km
268 m
16 km
378 m
80 km
526 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Glazoué 25 km · Savalou 30 km · Savé 46 km · Djidja 53 km · Kpozoun 58 km · Cové 61 km · Kétou 63 km · Bohicon 65 km

Benin 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
$1,658
2025
Happiness
4.4 / 10
World Happiness, 2025
Safe drinking water
18%
of population, 2024
Homicide rate
1.1
per 100k, 2017
Road deaths
26.8
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 406
Religion
Muslim 28%Roman Catholic 26%Protestant 14%Vodoun 12%

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 Dassa-Zoumè (7.75°, 2.1833°, elevation 156 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).