Aleg weather in September

In September, Aleg sees average daytime highs of 38°C and overnight lows near 27°C, with 37 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 38°C by the end. The sky is clear or mostly clear about 51% 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 Aleg's 10th-clearest and 11th-windiest month. For the whole year in context, see Aleg's year-round climate.

Daytime high
38°
6th warmest
Overnight low
27°
11th coldest
Rainfall
37 mm
5.9 wet days
Daylight
12 h 06 min
6:47 AM – 6:53 PM
Cloud cover
46%
10th clearest
Wind
14 km/h
11th windiest
Solar energy
6.48 kWh/m²
Travel score
1.4
out of 10

Aleg is commune of Mauritania.

Density
218/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 37°C in the first days to 38°C by the end.

A typical September day in Aleg reaches about 38°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 34°C and 41°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

25°30°35°40°45°151015202530
Avg high (°C)Avg low (°C)
13727
23727
33727
43727
53727
63727
73727
83727
93727
103727
113727
123727
133727
143727
153827
163827
173827
183827
193827
203827
213827
223827
233827
243827
253827
263827
273827
283927
293927
303927

How September really feels in Aleg

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.

Aleg 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
Jan31° / 18°20.211.15.7
Feb33° / 19°10.211.44.4
Mar36° / 22°10.211.92.5
Apr39° / 24°00.112.40.7
May41° / 27°0012.80.0
Jun41° / 28°20.6130.0
Jul38° / 27°122.612.91.1
Aug37° / 27°546.612.61.8
Sep38° / 27°375.912.11.4
Oct39° / 26°111.811.60.9
Nov36° / 23°00.111.22.6
Dec32° / 19°20.3114.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25941
35941
46040
56139
66139
76238
86337
96337
106436
116436
126535
136535
146535
156535
166535
176634
186634
196634
206535
216634
226733
236733
246733
256733
266832
276832
286931
297030
307030

Chance of precipitation in September

Any precipitation

Aleg gets around 37 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 19% and peaks near 24% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
124
224
323
423
523
622
722
821
921
1021
1120
1220
1320
1420
1519
1619
1719
1818
1918
2018
2117
2217
2317
2416
2516
2615
2715
2814
2913
3012

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 42% of days. Sticky, muggy-or-worse air turns up on roughly 82% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1013165822
2013175722
3013175722
4014185522
5014195521
6014205421
7115215121
8115225120
9116235020
10116244819
11127254719
12127254618
13138264518
14138264417
15149274316
16249274315
172510284214
182511284114
192611284013
203712283812
213713283712
224814283611
235815273411
246916273310
2561017263110
267101826299
279111926278
2810122025258
2911122125247
3012132225227

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 14 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light 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
2814light breeze
2914light breeze
3014light 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 6:45 AM to 6:49 AM, and sunset from 7:05 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:457:05
212.36:457:05
312.36:467:04
412.36:467:03
512.36:467:02
612.36:467:01
712.26:467:01
812.26:467:00
912.26:466:59
1012.26:466:58
1112.26:476:57
1212.26:476:56
1312.16:476:55
1412.16:476:55
1512.16:476:54
1612.16:476:53
1712.16:476:52
1812.16:476:51
1912.06:476:50
2012.06:486:49
2112.06:486:48
2212.06:486:48
2312.06:486:47
2412.06:486:46
2511.96:486:45
2611.96:486:44
2711.96:496:43
2811.96:496:43
2911.96:496:42
3011.96:496:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.48 kWh/m².

For context, solar energy here swings from a low near 5.01 kWh/m² to a high of 7.51 kWh/m² in May across the year — September's 6.48 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
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
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
286.4Intense
296.4Intense
306.4Intense
Planning a trip in September

Hazard calendar for Aleg

In seasonPeak

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

Aleg 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 Aleg?

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

1.4
Sightseeing
7th-best month of the year
4.3
Beach & pool
7th-best month of the year

September is a weaker month for outdoor sightseeing in Aleg.

What to pack for Aleg in September

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

In September, Aleg 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 Aleg 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 Aleg peaks around March 12 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highHighMar 12UV 12Dec 17UV 6
UV index (midday)Level
Jan8Very high
Feb12Extreme
Mar12Extreme
Apr10Extreme
May10Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep11Extreme
Oct9Very high
Nov8Very high
Dec6High

Air quality in Aleg 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 Aleg is worst in February — around 143 µg/m³ PM2.5 (unhealthy), about 2.4× the cleanest month (September, 60 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyFeb 8143 µg/m³Sep 1161 µg/m³
PM2.5 (µg/m³)Level
Jan142Unhealthy
Feb143Unhealthy
Mar110Unhealthy
Apr110Unhealthy
May126Unhealthy
Jun134Unhealthy
Jul95Unhealthy
Aug64Unhealthy
Sep60Unhealthy
Oct75Unhealthy
Nov75Unhealthy
Dec129Unhealthy
Location & terrain

Where is Aleg?

Aleg sits at 17.1°N, 13.9°W, 40 m above sea level, in Mauritania. The nearest listed city is Bogué, 63 km away.

NdioumBoutilimittMagṭa‘ LaḥjarKaédiPodorThilogneElghabra

Topography around Aleg

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

Within 3 km, the terrain around Aleg has only modest variations in elevation — a maximum elevation change of 26 m around an average of 34 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 45 m; within 80 km, only modest variations in elevation — a maximum elevation change of 131 m.

The land around Aleg is covered by grassland (57%) and bare terrain (28%) within 3 km, grassland (65%) and bare terrain (28%) within 16 km, and grassland (70%) and bare terrain (27%) within 80 km.

3 km
26 m
16 km
45 m
80 km
131 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwetland
September weather nearby: Bogué 63 km · Ndioum 99 km · Boutilimitt 100 km · Magṭa‘ Laḥjar 101 km · Kaédi 109 km · Podor 120 km · Thilogne 128 km · Elghabra 140 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 Aleg (17.0531°, -13.9131°, elevation 40 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).