Faya-Largeau weather in September

In September, Faya-Largeau sees average daytime highs of 40°C and overnight lows near 27°C, with 1 mm of rain across 0.2 wet days and about 12.1 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 40°C through the month. The sky is clear or mostly clear about 93% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Faya-Largeau's 2nd-clearest and 8th-windiest month. For the whole year in context, see Faya-Largeau's year-round climate.

Daytime high
40°
5th warmest
Overnight low
27°
9th coldest
Rainfall
1 mm
0.2 wet days
Daylight
12 h 06 min
5:35 AM – 5:41 PM
Cloud cover
9%
2nd clearest
Wind
21 km/h
8th windiest
Solar energy
7.04 kWh/m²
Travel score
0.4
out of 10

Faya-Largeau is place in Borkou, Chad.

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 40°C through the month.

A typical September day in Faya-Largeau reaches about 40°C in the afternoon and slips back to 27°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 37°C and 41°C. Set against its neighbours, September runs on par with August and about 4°C warmer than October.

20°25°30°35°40°45°151015202530
Avg high (°C)Avg low (°C)
14028
24028
34028
44028
54028
64028
74028
84028
94028
104027
114027
124027
134027
144027
154027
164027
174027
184027
193927
203927
213927
223927
233927
243927
253927
263927
273927
283927
293926
303926

How September really feels in Faya-Largeau

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
26 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.

Faya-Largeau weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 13°00119.2
Feb28° / 15°0011.47.9
Mar33° / 19°0011.94.6
Apr38° / 24°0012.41.3
May41° / 27°00.112.80.0
Jun42° / 28°0013.10.0
Jul40° / 28°20.5130.0
Aug40° / 28°41.112.60.2
Sep40° / 27°10.212.10.4
Oct36° / 24°0011.62.8
Nov30° / 18°0011.26.6
Dec26° / 14°0010.99.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 93% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 4% of September, with mostly cloudy or overcast conditions the remaining 3%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1955
2955
3964
4964
5964
6964
7964
8964
9964
10964
11964
12964
13964
14973
15982
16982
17982
18982
19982
20982
21982
22982
23982
24982
25982
26991
27991
28991
29991
30991

Chance of precipitation in September

Any precipitation

Faya-Largeau gets around 1 mm of rain over 0.2 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 0% and peaks near 2% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
12
22
32
41
51
61
71
81
91
101
111
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
17291063
2758953
3777952
4797842
5806842
6826732
7845722
8855622
9855622
10875512
11885511
12895411
13904411
14904411
15914311
16934300
17934300
18953200
19953200
20953200
21953200
22972100
23972100
24972100
25981100
26981100
27981100
28981100
29981100
30990100

Wind in September

Winds average 21 km/h in September.

Across September, daily wind ranges from about 17 km/h on the calmest days to 23 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
117light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
719light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1220light breeze
1320light breeze
1420light breeze
1520breezy
1620breezy
1721breezy
1821breezy
1921breezy
2021breezy
2122breezy
2222breezy
2322breezy
2422breezy
2522breezy
2623breezy
2723breezy
2823breezy
2923breezy
3023breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 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 30 minutes over September. Sunrise moves from 5:33 AM to 5:37 AM, and sunset from 5:54 PM to 5:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:335:54
212.35:335:53
312.35:335:52
412.35:335:51
512.35:335:51
612.35:335:50
712.35:345:49
812.25:345:48
912.25:345:47
1012.25:345:46
1112.25:345:45
1212.25:345:44
1312.25:345:44
1412.15:355:43
1512.15:355:42
1612.15:355:41
1712.15:355:40
1812.15:355:39
1912.05:355:38
2012.05:365:37
2112.05:365:36
2212.05:365:36
2312.05:365:35
2412.05:365:34
2511.95:365:33
2611.95:365:32
2711.95:375:31
2811.95:375:30
2911.95:375:29
3011.95:375:29

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 7.04 kWh/m².

For context, solar energy here swings from a low near 5.45 kWh/m² to a high of 7.84 kWh/m² in May across the year — September's 7.04 kWh/m² falls in the middle.

02468151015202530
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.1Intense
67.1Intense
77.1Intense
87.1Intense
97.1Intense
107.1Intense
117.1Intense
127.1Intense
137.1Intense
147.1Intense
157.0Intense
167.0Intense
177.0Intense
187.0Intense
197.0Intense
207.0Intense
217.0Intense
227.0Intense
237.0Intense
246.9Intense
256.9Intense
266.9Intense
276.9Intense
286.9Intense
296.8Intense
306.8Intense
Planning a trip in September

Hazard calendar for Faya-Largeau

In seasonPeak

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

Faya-Largeau 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 Faya-Largeau?

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

0.4
Sightseeing
8th-best month of the year
3.7
Beach & pool
8th-best month of the year

September is a weaker month for outdoor sightseeing in Faya-Largeau.

What to pack for Faya-Largeau in September

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

In September, Faya-Largeau sees daytime highs around 40°C and nights near 27°C. Pack light clothes and sun protection. Worth having: a windbreaker.

light clothessun protectiona windbreaker

UV index in Faya-Largeau 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 Faya-Largeau peaks around March 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highExtremeVery highHighMar 23UV 12Dec 18UV 6
UV index (midday)Level
Jan7High
Feb8Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun11Extreme
Jul8Very high
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov7Very high
Dec6High

Air quality in Faya-Largeau 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 Faya-Largeau is worst in January — around 151 µg/m³ PM2.5 (very unhealthy), about 2.1× the cleanest month (August, 72 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyJan 18151 µg/m³Aug 1172 µg/m³
PM2.5 (µg/m³)Level
Jan151Very unhealthy
Feb149Unhealthy
Mar137Unhealthy
Apr109Unhealthy
May100Unhealthy
Jun86Unhealthy
Jul74Unhealthy
Aug72Unhealthy
Sep81Unhealthy
Oct112Unhealthy
Nov107Unhealthy
Dec148Unhealthy
Location & terrain

Where is Faya-Largeau?

Faya-Largeau sits at 17.9°N, 19.1°E, 242 m above sea level, in Chad. The nearest listed city is Fada, 275 km away.

FadaBiltineAmdjarassIribaAbéchéUmm HājarAtiMoussoro

Topography around Faya-Largeau

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

Within 3 km, the terrain around Faya-Largeau has only modest variations in elevation — a maximum elevation change of 53 m around an average of 238 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 159 m; within 80 km, significant variations in elevation — a maximum elevation change of 266 m.

The land around Faya-Largeau is covered by bare terrain (82%) within 3 km, bare terrain (98%) within 16 km, and bare terrain (100%) within 80 km.

3 km
53 m
16 km
159 m
80 km
266 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Fada 275 km · Biltine 425 km · Amdjarass 447 km · Iriba 458 km · Abéché 492 km · Umm Hājar 519 km · Ati 530 km · Moussoro 552 km

Chad travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / D / E / F
220 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$1,022
2025
Happiness
4.4 / 10
World Happiness, 2025
Safe drinking water
6%
of population, 2024
Road deaths
32.4
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Muslim 52%Protestant 24%Roman Catholic 20%none 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 Faya-Largeau (17.9257°, 19.1043°, elevation 242 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).