Cobly weather in September

In September, Cobly sees average daytime highs of 30°C and overnight lows near 23°C, with 186 mm of rain across 21.7 wet days and about 12.1 hours of daylight. It is the 11th-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 3% of the time in September, and the air most often feels oppressive.

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

Daytime high
30°
11th warmest
Overnight low
23°
5th coldest
Rainfall
186 mm
21.7 wet days
Daylight
12 h 06 min
6:49 AM – 6:52 PM
Cloud cover
76%
10th clearest
Wind
7 km/h
10th windiest
Solar energy
4.89 kWh/m²
Travel score
3.5
out of 10

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 Cobly 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 31°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
32923
42923
52923
62923
72923
82923
92923
102923
112923
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283123
293123
303123

How September really feels in Cobly

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.

Cobly weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 21°10.111.53.8
Feb36° / 23°40.611.72.3
Mar38° / 26°11311.91.2
Apr37° / 27°4310.112.21.5
May35° / 26°6913.412.52.5
Jun32° / 24°7012.912.63.5
Jul30° / 23°1332112.63.6
Aug29° / 23°22925.912.33.4
Sep30° / 23°18621.712.13.5
Oct32° / 23°7813.311.83.7
Nov35° / 21°51.111.53.2
Dec35° / 20°0011.43.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% 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 80%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11189
21189
31189
41189
51288
61288
71387
81387
91486
101486
111585
121684
131684
141783
151882
161981
172080
182179
192278
202377
212575
222674
232773
242872
252971
263070
273169
283268
293367
303367

Chance of precipitation in September

Any precipitation

Cobly gets around 186 mm of rain over 21.7 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 73% and peaks near 84% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
184
283
383
482
581
681
780
879
978
1077
1176
1276
1375
1474
1574
1673
1772
1871
1970
2069
2168
2267
2366
2466
2565
2664
2764
2863
2962
3062

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 91% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1964
2964
3964
4964
5964
6964
7955
8955
9955
10946
11946
12937
13937
14928
15919
16919
179010
188911
198911
208812
218713
228713
238614
248515
258515
268416
278416
288416
298416
308416

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
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
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 12 h 12 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 18 minutes over September. Sunrise moves from 6:50 AM to 6:48 AM, and sunset from 7:02 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:507:02
212.26:507:01
312.26:497:01
412.26:497:00
512.26:496:59
612.26:496:59
712.16:496:58
812.16:496:57
912.16:496:57
1012.16:496:56
1112.16:496:55
1212.16:496:55
1312.16:496:54
1412.16:496:53
1512.16:496:53
1612.16:496:52
1712.06:496:51
1812.06:486:51
1912.06:486:50
2012.06:486:49
2112.06:486:49
2212.06:486:48
2312.06:486:47
2412.06:486:47
2512.06:486:46
2612.06:486:45
2711.96:486:45
2811.96:486:44
2911.96:486:43
3011.96:486:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.89 kWh/m².

For context, solar energy here swings from a low near 4.34 kWh/m² to a high of 6.51 kWh/m² in March across the year — September's 4.89 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.6Bright
74.6Bright
84.6Bright
94.7Bright
104.7Bright
114.7Bright
124.8Bright
134.8Bright
144.8Bright
154.9Bright
164.9Bright
174.9Bright
185.0Bright
195.0Bright
205.0Bright
215.1Bright
225.1Bright
235.1Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in September

Hazard calendar for Cobly

In seasonPeak

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

Cobly's monsoon runs July–September, when most of the year's rain falls.

Cobly sees seasonal dust haze (January–June), heaviest in March.

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

Is September a good time to visit Cobly?

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

3.5
Sightseeing
5th-best month of the year
4.8
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Cobly.

What to pack for Cobly in September

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

In September, Cobly sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Cobly 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 Cobly peaks around April 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 16UV 13Dec 16UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Cobly 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 Cobly is worst in December — around 86 µg/m³ PM2.5 (unhealthy), about 5.9× the cleanest month (August, 15 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyDec 2084 µg/m³Aug 1015 µg/m³
PM2.5 (µg/m³)Level
Jan78Unhealthy
Feb81Unhealthy
Mar57Unhealthy
Apr41Poor
May22Moderate
Jun18Moderate
Jul15Moderate
Aug15Moderate
Sep19Moderate
Oct31Moderate
Nov66Unhealthy
Dec86Unhealthy
Location & terrain

Where is Cobly?

Cobly sits at 10.5°N, 1.0°E, 247 m above sea level, in Benin. The nearest listed city is Matéri, 24 km away.

ToukountounaNatitingouMangoKompiengaNiamtougou

Topography around Cobly

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

Within 3 km, the terrain around Cobly has only modest variations in elevation — a maximum elevation change of 225 m around an average of 250 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 354 m; within 80 km, significant variations in elevation — a maximum elevation change of 563 m.

The land around Cobly is covered by cropland (60%) within 3 km, cropland (77%) within 16 km, and cropland (51%) and grassland (26%) within 80 km.

3 km
225 m
16 km
354 m
80 km
563 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Matéri 24 km · Tanguiéta 33 km · Boukoumbé 37 km · Toukountouna 41 km · Natitingou 47 km · Mango 60 km · Kompienga 72 km · Niamtougou 81 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 Cobly (10.4922°, 0.9997°, elevation 247 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).