I-n-Tillit weather in September

In September, I-n-Tillit sees average daytime highs of 37°C and overnight lows near 27°C, with 28 mm of rain across 5 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 36°C in the first days to 38°C by the end. The sky is clear or mostly clear about 59% of the time in September, and the air most often feels muggy.

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 I-n-Tillit's 11th-clearest and 11th-windiest month. For the whole year in context, see I-n-Tillit's year-round climate.

Daytime high
37°
6th warmest
Overnight low
27°
8th coldest
Rainfall
28 mm
5 wet days
Daylight
12 h 06 min
5:54 AM – 5:59 PM
Cloud cover
40%
11th clearest
Wind
13 km/h
11th windiest
Solar energy
6.51 kWh/m²
Travel score
1.7
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 36°C in the first days to 38°C by the end.

A typical September day in I-n-Tillit reaches about 37°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 40°C. Set against its neighbours, September runs about 2°C warmer than August and about 1°C cooler than October.

20°25°30°35°40°45°151015202530
Avg high (°C)Avg low (°C)
13526
23526
33626
43626
53626
63626
73626
83626
93626
103726
113726
123726
133726
143727
153727
163727
173727
183727
193827
203827
213827
223827
233827
243827
253827
263827
273827
283827
293827
303827

How September really feels in I-n-Tillit

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.

I-n-Tillit weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 17°0011.26.4
Feb33° / 19°0011.54.4
Mar37° / 23°0011.91.8
Apr41° / 27°10.112.30.1
May41° / 29°20.812.70.0
Jun40° / 29°113.412.90.2
Jul37° / 27°469.612.81.6
Aug35° / 26°871312.52.4
Sep37° / 27°28512.11.7
Oct38° / 26°30.911.61.1
Nov36° / 22°0011.32.8
Dec32° / 18°0011.15.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 23%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16436
26634
36634
46634
56832
66931
76931
87129
97129
107327
117426
127525
137624
147723
157822
167921
178020
188119
198119
208317
218317
228317
238317
248317
258416
268416
278416
288317
298317
308317

Chance of precipitation in September

Any precipitation

I-n-Tillit gets around 28 mm of rain over 5 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 18% and peaks near 29% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
129
228
327
426
525
624
723
823
922
1022
1121
1221
1320
1419
1519
1618
1717
1816
1916
2015
2114
2213
2312
2411
2510
269
279
288
297
307

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 36% of days. Sticky, muggy-or-worse air turns up on roughly 65% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
101630603
202731573
302832553
412934513
5131036483
6131137453
7131239433
8141340403
9141541372
10141642352
11151743322
12151843302
13162043282
14262143262
15272243242
16382342232
17392442211
18492541201
195102640181
205112739171
216132837151
227142936141
238152935121
249163033111
2511182931101
261219303080
271420302970
281521292860
291723292650
301924282540

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light 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 5:52 AM to 5:55 AM, and sunset from 6:11 PM to 5:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.35:526:11
212.35:526:10
312.35:536:09
412.35:536:08
512.25:536:08
612.25:536:07
712.25:536:06
812.25:536:05
912.25:536:04
1012.25:536:04
1112.25:536:03
1212.15:536:02
1312.15:536:01
1412.15:536:00
1512.15:546:00
1612.15:545:59
1712.15:545:58
1812.15:545:57
1912.05:545:56
2012.05:545:55
2112.05:545:55
2212.05:545:54
2312.05:545:53
2412.05:545:52
2512.05:545:51
2611.95:545:51
2711.95:555:50
2811.95:555:49
2911.95:555:48
3011.95:555:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.51 kWh/m².

For context, solar energy here swings from a low near 5.44 kWh/m² to a high of 7.26 kWh/m² in April across the year — September's 6.51 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
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.4Intense
306.4Intense
Planning a trip in September

Hazard calendar for I-n-Tillit

In seasonPeak

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

I-n-Tillit 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 I-n-Tillit?

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

1.7
Sightseeing
7th-best month of the year
4.8
Beach & pool
7th-best month of the year

September is a weaker month for outdoor sightseeing in I-n-Tillit.

What to pack for I-n-Tillit in September

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

In September, I-n-Tillit sees daytime highs around 37°C and nights near 27°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in I-n-Tillit 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 I-n-Tillit peaks around August 20 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 highAug 20UV 13Dec 18UV 7
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar13Extreme
Apr10Extreme
May10Extreme
Jun9Very high
Jul9Very high
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec7High

Air quality in I-n-Tillit 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 I-n-Tillit is worst in February — around 100 µg/m³ PM2.5 (unhealthy), about 3.7× the cleanest month (August, 27 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyFeb 1599 µg/m³Aug 2327 µg/m³
PM2.5 (µg/m³)Level
Jan94Unhealthy
Feb100Unhealthy
Mar94Unhealthy
Apr74Unhealthy
May71Unhealthy
Jun66Unhealthy
Jul45Poor
Aug27Moderate
Sep28Moderate
Oct43Poor
Nov57Unhealthy
Dec82Unhealthy
Location & terrain

Where is I-n-Tillit?

I-n-Tillit sits at 15.5°N, 0.5°W, 276 m above sea level, in Mali. The nearest listed city is Gao, 92 km away.

AribindaBouremAyorouDoriDjiboMéhanaTéra

Topography around I-n-Tillit

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of I-n-Tillit.

Within 3 km, the terrain around I-n-Tillit has only modest variations in elevation — a maximum elevation change of 30 m around an average of 280 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 67 m; within 80 km, only modest variations in elevation — a maximum elevation change of 216 m.

The land around I-n-Tillit is covered by grassland (65%) and bare terrain (22%) within 3 km, grassland (70%) and bare terrain (27%) within 16 km, and grassland (64%) and bare terrain (33%) within 80 km.

3 km
30 m
16 km
67 m
80 km
216 m
treesshrubsgrasslandbare terrainwetland
September weather nearby: Gao 92 km · Aribinda 153 km · Bourem 157 km · Ayorou 173 km · Dori 174 km · Djibo 204 km · Méhana 214 km · Téra 215 km

Mali travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$1,193
2025
Happiness
4.6 / 10
World Happiness, 2025
Road deaths
22.7
per 100k/yr, 2019
Income group
Low
World Bank
English
Very low
EF EPI 408
Religion
Muslim 94%Christian 3%none 3%animist 1%

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 I-n-Tillit (15.5461°, -0.4606°, elevation 276 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).