Ndioum weather in September

In September, Ndioum sees average daytime highs of 37°C and overnight lows near 27°C, with 44 mm of rain across 7.2 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 36°C in the first days to 38°C by the end. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels oppressive.

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 Ndioum's 11th-clearest and 11th-windiest month. For the whole year in context, see Ndioum's year-round climate.

Daytime high
37°
6th warmest
Overnight low
27°
12th coldest
Rainfall
44 mm
7.2 wet days
Daylight
12 h 06 min
6:50 AM – 6:56 PM
Cloud cover
50%
11th clearest
Wind
14 km/h
11th windiest
Solar energy
6.33 kWh/m²
Travel score
1.7
out of 10

Ndioum is town in Saint-Louis Region, Senegal.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 36°C in the first days to 38°C by the end.

A typical September day in Ndioum reaches about 37°C in the afternoon and slips back to 27°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 40°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

25°30°35°40°45°151015202530
Avg high (°C)Avg low (°C)
13626
23626
33626
43626
53626
63627
73627
83627
93627
103627
113627
123627
133727
143727
153727
163727
173727
183727
193727
203727
213727
223727
233727
243827
253827
263827
273827
283827
293827
303827

How September really feels in Ndioum

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
30 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.

Ndioum weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 18°30.211.15.4
Feb34° / 20°10.311.44.1
Mar37° / 22°10.111.92.3
Apr39° / 24°0012.40.7
May41° / 26°00.112.80.0
Jun40° / 26°30.6130.1
Jul38° / 26°153.112.91.4
Aug36° / 26°597.912.62.1
Sep37° / 27°447.212.11.7
Oct39° / 26°132.511.60.9
Nov36° / 23°10.211.22.4
Dec33° / 20°20.2114.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% 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 38%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15347
25545
35545
45743
55842
65941
76040
86139
96139
106238
116337
126337
136337
146337
156337
166337
176337
186337
196337
206337
216337
226337
236436
246436
256436
266535
276535
286634
296634
306733

Chance of precipitation in September

Any precipitation

Ndioum gets around 44 mm of rain over 7.2 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 23% and peaks near 31% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
131
230
330
429
529
628
727
827
926
1026
1125
1225
1324
1424
1523
1623
1722
1822
1922
2021
2121
2221
2320
2420
2519
2619
2718
2817
2916
3016

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 92% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100065638
200065737
300165637
400175636
500175735
601175734
701185634
801195633
901295632
10012105631
11012105631
12013115530
13013115629
14014125429
15014135428
16015135427
17015145426
18116145325
19126155323
20127165222
21127165321
22228175120
23239185019
24239194917
253410204816
263411214615
274512234413
284513244212
295514254111
30561426399

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2813light breeze
2913light breeze
3013light breeze

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 6:49 AM to 6:52 AM, and sunset from 7:08 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:497:08
212.36:497:07
312.36:497:06
412.36:497:06
512.36:497:05
612.26:497:04
712.26:497:03
812.26:497:02
912.26:497:02
1012.26:507:01
1112.26:507:00
1212.26:506:59
1312.16:506:58
1412.16:506:57
1512.16:506:57
1612.16:506:56
1712.16:506:55
1812.16:506:54
1912.06:506:53
2012.06:516:52
2112.06:516:51
2212.06:516:51
2312.06:516:50
2412.06:516:49
2511.96:516:48
2611.96:516:47
2711.96:516:46
2811.96:526:46
2911.96:526:45
3011.96:526:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.33 kWh/m².

For context, solar energy here swings from a low near 5.03 kWh/m² to a high of 7.46 kWh/m² in May across the year — September's 6.33 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.3Intense
66.3Intense
76.3Intense
86.3Intense
96.3Intense
106.3Intense
116.3Intense
126.3Intense
136.3Intense
146.3Intense
156.4Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.4Intense
256.4Intense
266.4Intense
276.4Intense
286.3Intense
296.3Intense
306.3Intense
Planning a trip in September

Hazard calendar for Ndioum

In seasonPeak

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

Ndioum sees dust haze year-round, heaviest in June.

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

Is September a good time to visit Ndioum?

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

1.7
Sightseeing
7th-best month of the year
4.7
Beach & pool
7th-best month of the year

September is a weaker month for outdoor sightseeing in Ndioum.

What to pack for Ndioum in September

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

In September, Ndioum sees daytime highs around 37°C and nights near 27°C. Pack light clothes and sun protection. About 7 days see rain.

light clothessun protection

UV index in Ndioum in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ndioum peaks around March 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 14UV 12Dec 17UV 7
UV index (midday)Level
Jan8Very high
Feb12Extreme
Mar13Extreme
Apr11Extreme
May11Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep11Extreme
Oct9Very high
Nov8Very high
Dec7Very high

Air quality in Ndioum 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 Ndioum is worst in February — around 134 µg/m³ PM2.5 (unhealthy), about 3.7× the cleanest month (August, 37 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyFeb 10132 µg/m³Aug 2138 µg/m³
PM2.5 (µg/m³)Level
Jan126Unhealthy
Feb134Unhealthy
Mar103Unhealthy
Apr104Unhealthy
May108Unhealthy
Jun105Unhealthy
Jul57Unhealthy
Aug37Poor
Sep42Poor
Oct63Unhealthy
Nov66Unhealthy
Dec113Unhealthy
Location & terrain

Where is Ndioum?

Ndioum sits at 16.5°N, 14.6°W, 18 m above sea level, in Senegal. The nearest listed city is Podor, 37 km away.

BoguéTékaneDaganaRichard-TollRosso

Topography around Ndioum

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

Within 3 km, the terrain around Ndioum has only modest variations in elevation — a maximum elevation change of 31 m around an average of 13 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 Ndioum is covered by grassland (61%) within 3 km, grassland (74%) within 16 km, and grassland (90%) within 80 km.

3 km
31 m
16 km
40 m
80 km
83 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Podor 37 km · Bogué 42 km · Tékane 75 km · Aleg 99 km · Dagana 102 km · Richard-Toll 112 km · Boutilimitt 115 km · Rosso 123 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 Ndioum (16.5129°, -14.6471°, elevation 18 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).