Mandelia weather in September

In September, Mandelia sees average daytime highs of 33°C and overnight lows near 24°C, with 96 mm of rain across 14.8 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 31°C in the first days to 34°C by the end. The sky is clear or mostly clear about 22% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Mandelia's 10th-clearest and 12th-windiest month. For the whole year in context, see Mandelia's year-round climate.

Daytime high
33°
11th warmest
Overnight low
24°
8th coldest
Rainfall
96 mm
14.8 wet days
Daylight
12 h 06 min
5:51 AM – 5:55 PM
Cloud cover
62%
10th clearest
Wind
7 km/h
12th windiest
Solar energy
5.87 kWh/m²
Travel score
3.3
out of 10

Mandelia is sub-prefecture in Chad.

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 31°C in the first days to 34°C by the end.

A typical September day in Mandelia reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 35°C. Set against its neighbours, September runs about 2°C warmer than August and about 4°C cooler than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13124
23124
33124
43124
53124
63124
73224
83224
93224
103224
113224
123224
133224
143224
153224
163324
173324
183324
193324
203324
213324
223324
233324
243424
253424
263424
273424
283424
293424
303424

How September really feels in Mandelia

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
heat index over the day's high
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.

Mandelia weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 16°0011.44.7
Feb36° / 19°0011.62.7
Mar40° / 24°0011.90.4
Apr41° / 27°41.312.30.0
May40° / 28°205.712.50.2
Jun37° / 27°378.912.71.5
Jul33° / 25°11417.112.62.8
Aug31° / 24°19623.112.43.2
Sep33° / 24°9614.812.13.3
Oct36° / 24°194.211.72.3
Nov36° / 21°00.111.52.5
Dec33° / 17°0011.34.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 24% of September, with mostly cloudy or overcast conditions the remaining 54%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12971
23070
33169
43367
53367
63565
73664
83763
93961
104159
114159
124357
134456
144555
154654
164852
174852
184951
195050
205248
215248
225347
235446
245545
255644
265644
275743
285842
295941
306040

Chance of precipitation in September

Any precipitation

Mandelia gets around 96 mm of rain over 14.8 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 49% and peaks near 67% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
167
266
365
464
563
662
760
859
957
1056
1155
1253
1352
1450
1549
1647
1746
1845
1943
2042
2141
2240
2339
2437
2536
2635
2734
2833
2932
3031

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 82% 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 (%)
100008416
200008416
300008416
400008416
500008416
600008416
700008416
800008416
900008416
1000008416
1100008317
1200008317
1300008317
1400008317
1500008218
1600018118
1700018118
1800018118
1900018118
2000028018
2100028117
2200028117
2300038116
2410138015
2511147815
2611147914
2711157913
2811267812
2911277811
3021287710

Wind in September

Winds average 7 km/h in September, the calmest month.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 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 18 minutes over September. Sunrise moves from 5:52 AM to 5:51 AM, and sunset from 6:06 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:526:06
212.25:526:05
312.25:526:04
412.25:526:04
512.25:526:03
612.25:526:02
712.25:526:02
812.25:526:01
912.15:526:00
1012.15:525:59
1112.15:525:59
1212.15:525:58
1312.15:525:57
1412.15:515:57
1512.15:515:56
1612.15:515:55
1712.15:515:55
1812.05:515:54
1912.05:515:53
2012.05:515:52
2112.05:515:52
2212.05:515:51
2312.05:515:50
2412.05:515:50
2512.05:515:49
2612.05:515:48
2711.95:515:48
2811.95:515:47
2911.95:515:46
3011.95:515:46

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.87 kWh/m².

For context, solar energy here swings from a low near 5.14 kWh/m² to a high of 7.11 kWh/m² in March across the year — September's 5.87 kWh/m² sits near the bottom.

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
196.0Bright
206.0Intense
216.0Intense
226.0Intense
236.1Intense
246.1Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Mandelia

In seasonPeak

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

Mandelia sees seasonal dust haze (January–July), heaviest in March.

Dust
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Mandelia?

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

3.3
Sightseeing
3rd-best month of the year
5.5
Beach & pool
6th-best month of the year

September is a weaker month for outdoor sightseeing in Mandelia.

What to pack for Mandelia in September

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

In September, Mandelia sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Mandelia 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 Mandelia peaks around March 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 16UV 13Dec 16UV 8
UV index (midday)Level
Jan10Very high
Feb11Extreme
Mar13Extreme
Apr11Extreme
May9Very high
Jun10Extreme
Jul11Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Mandelia 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 Mandelia is worst in February — around 98 µg/m³ PM2.5 (unhealthy), about 4.4× the cleanest month (August, 22 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyFeb 1797 µg/m³Aug 1522 µg/m³
PM2.5 (µg/m³)Level
Jan91Unhealthy
Feb98Unhealthy
Mar94Unhealthy
Apr66Unhealthy
May40Poor
Jun34Moderate
Jul24Moderate
Aug22Moderate
Sep24Moderate
Oct42Poor
Nov53Poor
Dec83Unhealthy
Location & terrain

Where is Mandelia?

Mandelia sits at 11.7°N, 15.2°E, 302 m above sea level, in Chad. The nearest listed city is Kousséri, 45 km away.

MagaBogoGamboru

Topography around Mandelia

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

Within 3 km, the terrain around Mandelia has only modest variations in elevation — a maximum elevation change of 5 m around an average of 299 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 14 m; within 80 km, only modest variations in elevation — a maximum elevation change of 56 m.

The land around Mandelia is covered by grassland (77%) within 3 km, grassland (63%) within 16 km, and grassland (63%) within 80 km.

3 km
5 m
16 km
14 m
80 km
56 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Kousséri 45 km · N'Djamena 47 km · Dourbali 68 km · Massaguet 85 km · Guelendeng 96 km · Maga 104 km · Bogo 131 km · Gamboru 134 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 Mandelia (11.7302°, 15.2447°, elevation 302 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).