El ’Ayoûn weather in September

In September, El ’Ayoûn sees average daytime highs of 34°C and overnight lows near 26°C, with 93 mm of rain across 9.6 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 35°C by the end. The sky is clear or mostly clear about 34% 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 El ’Ayoûn's 11th-clearest and 11th-windiest month. For the whole year in context, see El ’Ayoûn's year-round climate.

Daytime high
34°
9th warmest
Overnight low
26°
8th coldest
Rainfall
93 mm
9.6 wet days
Daylight
12 h 06 min
6:36 AM – 6:42 PM
Cloud cover
57%
11th clearest
Wind
10 km/h
11th windiest
Solar energy
6 kWh/m²
Travel score
3.0
out of 10

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 35°C by the end.

A typical September day in El ’Ayoûn 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)
13325
23325
33325
43325
53325
63325
73325
83325
93325
103325
113325
123325
133425
143425
153425
163426
173426
183426
193426
203426
213426
223526
233526
243526
253526
263526
273526
283526
293626
303626

How September really feels in El ’Ayoûn

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
20 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.

El ’Ayoûn 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
Jan32° / 19°10.211.25.1
Feb35° / 22°00.111.53.3
Mar38° / 25°00.111.91.2
Apr41° / 28°00.112.30.0
May42° / 30°41.112.70.0
Jun40° / 30°153.112.90.3
Jul36° / 27°779.112.82.3
Aug33° / 25°12412.912.53.2
Sep34° / 26°939.612.13.0
Oct37° / 26°244.611.61.8
Nov36° / 23°10.311.32.4
Dec33° / 20°10.111.14.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% 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 47%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23961
34060
44159
54357
64456
74456
84753
94753
104951
115050
125149
135248
145446
155446
165545
175743
185743
195743
205941
215941
226040
236040
246040
256139
266139
276139
286238
296238
306238

Chance of precipitation in September

Any precipitation

El ’Ayoûn gets around 93 mm of rain over 9.6 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 33% and peaks near 45% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
145
244
343
442
541
639
738
838
937
1036
1135
1235
1334
1433
1532
1632
1731
1830
1930
2029
2128
2228
2327
2426
2525
2625
2724
2824
2923
3023

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100017128
200017029
300017029
400016930
500016930
600007030
700007030
800006931
900016831
1000016831
1100016930
1200016930
1300016930
1400026929
1500027028
1600036928
1700037027
1800047026
1900157024
2000167023
2101176922
2201286920
2301296919
24013106818
25113126716
26114136615
27115146514
28125166412
29226176211
30227186110

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
1011calm
1111calm
1211calm
1311calm
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 6:35 AM to 6:38 AM, and sunset from 6:54 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:356:54
212.36:356:53
312.36:356:52
412.36:366:51
512.26:366:51
612.26:366:50
712.26:366:49
812.26:366:48
912.26:366:47
1012.26:366:47
1112.26:366:46
1212.16:366:45
1312.16:366:44
1412.16:366:43
1512.16:366:42
1612.16:366:42
1712.16:376:41
1812.16:376:40
1912.06:376:39
2012.06:376:38
2112.06:376:38
2212.06:376:37
2312.06:376:36
2412.06:376:35
2512.06:376:34
2611.96:376:33
2711.96:376:33
2811.96:386:32
2911.96:386:31
3011.96:386:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6 kWh/m².

For context, solar energy here swings from a low near 5.17 kWh/m² to a high of 7.37 kWh/m² in April across the year — September's 6 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.7Bright
55.7Bright
65.7Bright
75.8Bright
85.8Bright
95.8Bright
105.9Bright
115.9Bright
125.9Bright
136.0Bright
146.0Intense
156.0Intense
166.0Intense
176.1Intense
186.1Intense
196.1Intense
206.1Intense
216.2Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.2Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
Planning a trip in September

Hazard calendar for El ’Ayoûn

In seasonPeak

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

El ’Ayoûn 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 El ’Ayoûn?

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

3.0
Sightseeing
5th-best month of the year
5.8
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in El ’Ayoûn.

What to pack for El ’Ayoûn in September

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

In September, El ’Ayoûn sees daytime highs around 34°C and nights near 26°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in El ’Ayoûn 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 El ’Ayoûn peaks around March 22 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 5 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highHighMar 22UV 13Dec 19UV 5
UV index (midday)Level
Jan7High
Feb10Very high
Mar13Extreme
Apr13Extreme
May9Very high
Jun10Very high
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec5High

Air quality in El ’Ayoûn 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 El ’Ayoûn is worst in January — around 95 µg/m³ PM2.5 (unhealthy), about 4.8× the cleanest month (August, 20 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModeratePoorUnhealthyJan 2295 µg/m³Aug 2021 µg/m³
PM2.5 (µg/m³)Level
Jan95Unhealthy
Feb94Unhealthy
Mar76Unhealthy
Apr62Unhealthy
May62Unhealthy
Jun65Unhealthy
Jul34Moderate
Aug20Moderate
Sep24Moderate
Oct42Poor
Nov49Poor
Dec87Unhealthy
Location & terrain

Where is El ’Ayoûn?

El ’Ayoûn sits at 15.6°N, 11.2°W, 179 m above sea level, in Mauritania. The nearest listed city is Sélibaby, 116 km away.

SélibabyKiffaKayesṬinṭâneNioroGuerouElghabra

Topography around El ’Ayoûn

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

Within 3 km, the terrain around El ’Ayoûn has only modest variations in elevation — a maximum elevation change of 154 m around an average of 195 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 204 m; within 80 km, significant variations in elevation — a maximum elevation change of 361 m.

The land around El ’Ayoûn is covered by grassland (91%) within 3 km, grassland (91%) within 16 km, and grassland (91%) within 80 km.

3 km
154 m
16 km
204 m
80 km
361 m
shrubsgrasslandcroplandbare terrain
September weather nearby: Sélibaby 116 km · Kiffa 121 km · Kayes 127 km · Ṭinṭâne 142 km · Nioro 174 km · Guerou 192 km · Bafoulabé 198 km · Elghabra 200 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 El ’Ayoûn (15.5579°, -11.18°, elevation 179 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).