Sélibaby weather in September

In September, Sélibaby sees average daytime highs of 34°C and overnight lows near 26°C, with 88 mm of rain across 9.4 wet days and about 12.1 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 33°C in the first days to 36°C by the end. The sky is clear or mostly clear about 31% 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 Sélibaby's 11th-clearest and 11th-windiest month. For the whole year in context, see Sélibaby's year-round climate.

Daytime high
34°
9th warmest
Overnight low
26°
8th coldest
Rainfall
88 mm
9.4 wet days
Daylight
12 h 06 min
6:41 AM – 6:46 PM
Cloud cover
59%
11th clearest
Wind
10 km/h
11th windiest
Solar energy
5.88 kWh/m²
Travel score
2.9
out of 10

Sélibaby is commune of Mauritania.

Density
272/km²
people per km²

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 33°C in the first days to 36°C by the end.

A typical September day in Sélibaby reaches about 34°C in the afternoon and slips back to 26°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 37°C. Set against its neighbours, September runs about 1°C warmer than August and about 3°C cooler than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13326
23326
33326
43326
53326
63326
73326
83326
93326
103326
113426
123426
133426
143426
153426
163426
173426
183426
193426
203526
213526
223526
233526
243526
253526
263526
273526
283626
293626
303626

How September really feels in Sélibaby

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.

Sélibaby weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 20°00.111.24.6
Feb36° / 22°00.111.52.9
Mar39° / 25°00.111.90.8
Apr41° / 28°0012.30.0
May42° / 30°20.512.70.0
Jun40° / 30°132.712.90.3
Jul36° / 27°678.512.82.2
Aug33° / 26°1141212.53.0
Sep34° / 26°889.412.12.9
Oct37° / 26°193.511.71.7
Nov36° / 23°10.211.32.3
Dec34° / 21°10.111.14.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 51%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13268
23565
33565
43763
53763
64060
74060
84258
94357
104357
114654
124654
134753
144852
155050
165050
175149
185248
195347
205446
215545
225644
235743
245842
255941
266040
276139
286139
296337
306337

Chance of precipitation in September

Any precipitation

Sélibaby gets around 88 mm of rain over 9.4 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 31% and peaks near 43% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
143
243
342
442
541
640
739
838
938
1037
1136
1235
1334
1433
1531
1630
1729
1828
1927
2026
2125
2224
2323
2422
2521
2621
2720
2819
2919
3019

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 53% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100015049
200015050
300005050
400004951
500004951
600004951
700004951
800004951
900004951
1000005050
1100005050
1200015049
1300015148
1400015148
1500015247
1600025246
1700025444
1800035443
1900035542
2000145540
2100155539
2200155737
2300165736
2400175834
2500185932
2600295831
27002105929
28002116027
29013125826
30113135824

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

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 6:40 AM to 6:42 AM, and sunset from 6:57 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:406:57
212.36:406:57
312.36:406:56
412.36:406:55
512.26:406:54
612.26:406:54
712.26:406:53
812.26:406:52
912.26:406:51
1012.26:406:50
1112.26:406:50
1212.16:406:49
1312.16:406:48
1412.16:406:47
1512.16:406:46
1612.16:416:46
1712.16:416:45
1812.16:416:44
1912.06:416:43
2012.06:416:42
2112.06:416:42
2212.06:416:41
2312.06:416:40
2412.06:416:39
2512.06:416:38
2611.96:416:38
2711.96:416:37
2811.96:416:36
2911.96:426:35
3011.96:426:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.88 kWh/m².

For context, solar energy here swings from a low near 5.18 kWh/m² to a high of 7.38 kWh/m² in April across the year — September's 5.88 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.6Bright
75.6Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.9Bright
165.9Bright
175.9Bright
186.0Bright
196.0Intense
206.0Intense
216.0Intense
226.1Intense
236.1Intense
246.1Intense
256.1Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Hazard calendar for Sélibaby

In seasonPeak

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

Sélibaby 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 Sélibaby?

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

2.9
Sightseeing
4th-best month of the year
5.8
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in Sélibaby.

What to pack for Sélibaby in September

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

In September, Sélibaby sees daytime highs around 34°C and nights near 26°C. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Sélibaby 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 Sélibaby peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highExtremeVery highMar 18UV 13Dec 20UV 7
UV index (midday)Level
Jan7Very high
Feb11Extreme
Mar13Extreme
Apr12Extreme
May10Very high
Jun10Very high
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Sélibaby 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 Sélibaby is worst in February — around 82 µg/m³ PM2.5 (unhealthy), about 4.8× the cleanest month (August, 17 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyFeb 1380 µg/m³Aug 1918 µg/m³
PM2.5 (µg/m³)Level
Jan74Unhealthy
Feb82Unhealthy
Mar68Unhealthy
Apr58Unhealthy
May59Unhealthy
Jun54Poor
Jul27Moderate
Aug17Moderate
Sep22Moderate
Oct47Poor
Nov47Poor
Dec70Unhealthy
Location & terrain

Where is Sélibaby?

Sélibaby sits at 15.2°N, 12.2°W, 64 m above sea level, in Mauritania. The nearest listed city is Kayes, 112 km away.

KayesKanelEl ’AyoûnMatamOuro SoguiElghabraThilogneKaédi

Topography around Sélibaby

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

Within 3 km, the terrain around Sélibaby has only modest variations in elevation — a maximum elevation change of 55 m around an average of 62 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 143 m; within 80 km, significant variations in elevation — a maximum elevation change of 400 m.

The land around Sélibaby is covered by grassland (69%) within 3 km, grassland (86%) within 16 km, and grassland (78%) within 80 km.

3 km
55 m
16 km
143 m
80 km
400 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Kayes 112 km · Kanel 113 km · El ’Ayoûn 116 km · Matam 127 km · Ouro Sogui 132 km · Elghabra 174 km · Thilogne 179 km · Kaédi 179 km

Mauritania travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type C / E / F
220 V · 50 Hz
Prices
≈ 31% of US
price level, 2025
GDP per capita
$2,198
2025
Happiness
4.5 / 10
World Happiness, 2025
Homicide rate
1
per 100k, 2020
Road deaths
25.6
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Muslim 100%

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 Sélibaby (15.1585°, -12.1843°, elevation 64 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).