Ayoun El Atrous weather in September

In September, Ayoun El Atrous sees average daytime highs of 38°C and overnight lows near 27°C, with 31 mm of rain across 5.9 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 37°C in the first days to 39°C by the end. The sky is clear or mostly clear about 52% 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 Ayoun El Atrous's 10th-clearest and 12th-windiest month. For the whole year in context, see Ayoun El Atrous's year-round climate.

Daytime high
38°
6th warmest
Overnight low
27°
9th coldest
Rainfall
31 mm
5.9 wet days
Daylight
12 h 06 min
6:30 AM – 6:36 PM
Cloud cover
45%
10th clearest
Wind
14 km/h
12th windiest
Solar energy
6.53 kWh/m²
Travel score
1.3
out of 10

Ayoun El Atrous is city in Mauritania.

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 37°C in the first days to 39°C by the end.

A typical September day in Ayoun El Atrous reaches about 38°C in the afternoon and slips back to 27°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 34°C and 41°C. Set against its neighbours, September runs about 1°C warmer than August and on par with October.

20°25°30°35°40°45°151015202530
Avg high (°C)Avg low (°C)
13627
23627
33727
43727
53727
63727
73727
83727
93727
103727
113727
123827
133827
143827
153827
163827
173827
183827
193828
203828
213828
223828
233828
243928
253928
263928
273928
283928
293928
303927

How September really feels in Ayoun El Atrous

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.

Ayoun El Atrous 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
Jan29° / 16°20.311.17.1
Feb32° / 19°10.111.45.2
Mar36° / 22°10.111.92.8
Apr39° / 26°0012.40.5
May41° / 29°10.412.80.0
Jun42° / 31°41.1130.0
Jul39° / 29°234.112.90.7
Aug36° / 27°628.112.61.9
Sep38° / 27°315.912.11.3
Oct38° / 26°101.811.61.2
Nov34° / 22°00.111.23.5
Dec30° / 18°10.2116.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% 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 31%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15743
25941
35941
46040
56139
66238
76337
86535
96535
106634
116832
126832
137030
147129
157129
167228
177327
187327
197426
207426
217426
227525
237525
247525
257525
267525
277525
287525
297426
307327

Chance of precipitation in September

Any precipitation

Ayoun El Atrous gets around 31 mm of rain over 5.9 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 20% and peaks near 28% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
128
227
327
426
525
625
725
824
924
1023
1123
1223
1322
1422
1521
1621
1720
1820
1919
2018
2117
2216
2315
2414
2513
2612
2711
2811
2910
3010

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 34% of days. Sticky, muggy-or-worse air turns up on roughly 68% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1025255711
2026265610
3026275510
403728539
513829509
613930498
713931478
8141032467
9241133446
10241234426
11341335405
12351435395
13451535374
14461535354
15561635344
16671735323
17771835313
18881834293
19991933283
2010101932262
2112111931252
2214122030232
2316132028222
2418142027201
2520142025191
2623152024171
2725162022161
2828161921151
2931171919141
3033171818130

Wind in September

Winds average 14 km/h in September, the calmest month.

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
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light 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 6:28 AM to 6:32 AM, and sunset from 6:48 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:286:48
212.36:286:47
312.36:296:46
412.36:296:46
512.36:296:45
612.36:296:44
712.26:296:43
812.26:296:42
912.26:296:41
1012.26:296:41
1112.26:296:40
1212.26:306:39
1312.16:306:38
1412.16:306:37
1512.16:306:36
1612.16:306:36
1712.16:306:35
1812.16:306:34
1912.06:306:33
2012.06:306:32
2112.06:316:31
2212.06:316:30
2312.06:316:30
2412.06:316:29
2511.96:316:28
2611.96:316:27
2711.96:316:26
2811.96:316:25
2911.96:326:25
3011.96:326:24

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.53 kWh/m².

For context, solar energy here swings from a low near 5.09 kWh/m² to a high of 7.4 kWh/m² in April across the year — September's 6.53 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.5Intense
76.5Intense
86.5Intense
96.6Intense
106.6Intense
116.6Intense
126.6Intense
136.6Intense
146.5Intense
156.5Intense
166.5Intense
176.5Intense
186.5Intense
196.5Intense
206.5Intense
216.5Intense
226.5Intense
236.5Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in September

Hazard calendar for Ayoun El Atrous

In seasonPeak

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

Ayoun El Atrous 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 Ayoun El Atrous?

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

1.3
Sightseeing
7th-best month of the year
4.2
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Ayoun El Atrous.

What to pack for Ayoun El Atrous in September

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

In September, Ayoun El Atrous sees daytime highs around 38°C and nights near 27°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Ayoun El Atrous 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 Ayoun El Atrous peaks around March 19 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 highExtremeVery highMar 19UV 13Dec 18UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr12Extreme
May10Very high
Jun10Extreme
Jul10Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7Very high

Air quality in Ayoun El Atrous 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 Ayoun El Atrous is worst in January — around 138 µg/m³ PM2.5 (unhealthy), about 4.0× the cleanest month (September, 35 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyJan 17137 µg/m³Sep 1035 µg/m³
PM2.5 (µg/m³)Level
Jan138Unhealthy
Feb129Unhealthy
Mar104Unhealthy
Apr83Unhealthy
May77Unhealthy
Jun88Unhealthy
Jul62Unhealthy
Aug37Poor
Sep35Moderate
Oct62Unhealthy
Nov76Unhealthy
Dec127Unhealthy
Location & terrain

Where is Ayoun El Atrous?

Ayoun El Atrous sits at 16.7°N, 9.6°W, 235 m above sea level, in Mauritania. The nearest listed city is Ṭinṭâne, 67 km away.

NioroTembedghaKiffaEl ’AyoûnDiémaNémaBougadoum

Topography around Ayoun El Atrous

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

Within 3 km, the terrain around Ayoun El Atrous has only modest variations in elevation — a maximum elevation change of 88 m around an average of 244 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 160 m; within 80 km, significant variations in elevation — a maximum elevation change of 309 m.

The land around Ayoun El Atrous is covered by bare terrain (65%) and grassland (30%) within 3 km, grassland (73%) and bare terrain (26%) within 16 km, and grassland (76%) and bare terrain (23%) within 80 km.

3 km
88 m
16 km
160 m
80 km
309 m
shrubsgrasslandartificial surfacesbare terrain
September weather nearby: Ṭinṭâne 67 km · Nioro 159 km · Tembedgha 161 km · Kiffa 190 km · El ’Ayoûn 207 km · Diéma 240 km · Néma 251 km · Bougadoum 255 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 Ayoun El Atrous (16.6614°, -9.6149°, elevation 235 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).