Koumpentoum weather in September

In September, Koumpentoum sees average daytime highs of 33°C and overnight lows near 24°C, with 140 mm of rain across 15 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 33°C through the month. The sky is clear or mostly clear about 12% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Koumpentoum's 11th-clearest and 11th-windiest month. For the whole year in context, see Koumpentoum's year-round climate.

Daytime high
33°
11th warmest
Overnight low
24°
6th coldest
Rainfall
140 mm
15 wet days
Daylight
12 h 06 min
6:50 AM – 6:55 PM
Cloud cover
71%
11th clearest
Wind
8 km/h
11th windiest
Solar energy
5.01 kWh/m²
Travel score
3.2
out of 10

Koumpentoum is town in Tambacounda, Senegal.

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 33°C through the month.

A typical September day in Koumpentoum reaches about 33°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 34°C. Set against its neighbours, September runs on par with August and about 3°C cooler than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173224
183324
193324
203324
213324
223324
233324
243324
253325
263325
273325
283325
293425
303425

How September really feels in Koumpentoum

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
28 feel dangerously hot (≥ 39°C)
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.

Koumpentoum 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° / 19°10.111.33.7
Feb37° / 21°10.111.52.3
Mar39° / 24°00.111.90.6
Apr41° / 25°0012.30.0
May40° / 26°20.512.60.1
Jun38° / 27°28512.81.2
Jul34° / 25°11413.512.72.5
Aug32° / 25°17919.112.52.9
Sep33° / 24°1401512.13.2
Oct35° / 25°375.811.72.5
Nov37° / 22°20.611.42.2
Dec35° / 20°10.211.23.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% 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 71%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11387
21585
31585
41783
51783
61882
72080
82080
92377
102377
112476
122575
132674
142773
152971
163070
173169
183169
193466
203466
213565
223763
233862
243961
254060
264258
274357
284456
294555
304753

Chance of precipitation in September

Any precipitation

Koumpentoum gets around 140 mm of rain over 15 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 49% and peaks near 61% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
161
260
360
459
558
657
756
856
955
1054
1153
1253
1352
1452
1551
1651
1750
1849
1948
2047
2146
2245
2344
2442
2540
2639
2737
2836
2934
3033

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
102872
202872
302872
402872
502872
602872
702773
802773
902674
1002674
1102674
1202575
1302575
1402476
1502476
1602377
1702377
1802377
1902377
2002278
2102278
2202278
2302278
2402278
2502278
2602377
2702377
2802377
2902476
3012475

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 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 24 minutes over September. Sunrise moves from 6:50 AM to 6:51 AM, and sunset from 7:06 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:507:06
212.36:507:05
312.26:507:05
412.26:507:04
512.26:507:03
612.26:507:03
712.26:507:02
812.26:507:01
912.26:507:00
1012.26:507:00
1112.16:506:59
1212.16:506:58
1312.16:506:57
1412.16:506:56
1512.16:506:56
1612.16:506:55
1712.16:506:54
1812.16:506:53
1912.06:506:53
2012.06:506:52
2112.06:506:51
2212.06:506:50
2312.06:516:50
2412.06:516:49
2512.06:516:48
2611.96:516:47
2711.96:516:46
2811.96:516:46
2911.96:516:45
3011.96:516:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.01 kWh/m².

For context, solar energy here swings from a low near 4.57 kWh/m² to a high of 7.27 kWh/m² in April across the year — September's 5.01 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.8Bright
94.8Bright
104.8Bright
114.9Bright
124.9Bright
134.9Bright
145.0Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
195.1Bright
205.2Bright
215.2Bright
225.2Bright
235.3Bright
245.3Bright
255.3Bright
265.4Bright
275.4Bright
285.4Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for Koumpentoum

In seasonPeak

In September, Koumpentoum sits inside its rainy season and dust season. The full year is below, with each hazard's peak months called out.

Koumpentoum's rainy season runs July–September, when most of the year's rain falls.

Koumpentoum sees seasonal dust haze (February–October), heaviest in June.

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

Is September a good time to visit Koumpentoum?

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

3.2
Sightseeing
3rd-best month of the year
5.4
Beach & pool
6th-best month of the year

September is a weaker month for outdoor sightseeing in Koumpentoum.

What to pack for Koumpentoum in September

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

In September, Koumpentoum sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Koumpentoum 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 Koumpentoum peaks around August 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeExtremeVery highAug 19UV 13Dec 19UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar11Extreme
Apr9Very high
May11Extreme
Jun10Very high
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Koumpentoum 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 Koumpentoum is worst in February — around 81 µg/m³ PM2.5 (unhealthy), about 4.1× the cleanest month (August, 20 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyFeb 1679 µg/m³Aug 2020 µg/m³
PM2.5 (µg/m³)Level
Jan64Unhealthy
Feb81Unhealthy
Mar68Unhealthy
Apr62Unhealthy
May61Unhealthy
Jun57Unhealthy
Jul30Moderate
Aug20Moderate
Sep23Moderate
Oct49Poor
Nov57Unhealthy
Dec62Unhealthy
Location & terrain

Where is Koumpentoum?

Koumpentoum sits at 14.0°N, 14.6°W, 24 m above sea level, in Senegal. The nearest listed city is Koungheul, 25 km away.

FaratoTambacoundaVélingaraKaffrineFarafenniSoma

Topography around Koumpentoum

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

Within 3 km, the terrain around Koumpentoum has only modest variations in elevation — a maximum elevation change of 33 m around an average of 26 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 46 m; within 80 km, only modest variations in elevation — a maximum elevation change of 58 m.

The land around Koumpentoum is covered by grassland (44%) and cropland (39%) within 3 km, cropland (43%) and grassland (38%) within 16 km, and grassland (38%), cropland (38%) and shrubs (20%) within 80 km.

3 km
33 m
16 km
46 m
80 km
58 m
treesshrubsgrasslandcroplandartificial surfaceswetland
September weather nearby: Koungheul 25 km · Koungneul Sossé 27 km · Farato 75 km · Tambacounda 100 km · Vélingara 105 km · Kaffrine 107 km · Farafenni 121 km · Soma 121 km

Senegal travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / D / E / K
230 V · 50 Hz
Prices
≈ 36% of US
price level, 2025
GDP per capita
$1,955
2025
Happiness
4.8 / 10
World Happiness, 2025
Safe drinking water
27%
of population, 2024
Homicide rate
0.3
per 100k, 2015
Road deaths
23.5
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 442
Religion
Muslim 97%Christian 3%

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 Koumpentoum (13.9833°, -14.5667°, elevation 24 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).