Kayes weather in September

In September, Kayes sees average daytime highs of 33°C and overnight lows near 25°C, with 108 mm of rain across 11.2 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 32°C in the first days to 34°C by the end. The sky is clear or mostly clear about 23% of the time in September, and the air most often feels miserable.

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

Daytime high
33°
11th warmest
Overnight low
25°
8th coldest
Rainfall
108 mm
11.2 wet days
Daylight
12 h 06 min
6:38 AM – 6:42 PM
Cloud cover
65%
11th clearest
Wind
8 km/h
11th windiest
Solar energy
5.52 kWh/m²
Travel score
3.3
out of 10

Kayes is city in Mali.

Founded
1880

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 32°C in the first days to 34°C by the end.

A typical September day in Kayes reaches about 33°C in the afternoon and slips back to 25°C overnight — a 8°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 1°C warmer than August and about 3°C cooler than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13225
23225
33225
43225
53225
63225
73225
83225
93225
103225
113325
123325
133325
143325
153325
163325
173325
183325
193325
203325
213325
223425
233425
243425
253425
263425
273426
283426
293426
303526

How September really feels in Kayes

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
23 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.

Kayes weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 20°00.111.24.3
Feb36° / 22°0011.52.6
Mar39° / 25°0011.90.6
Apr42° / 28°00.112.30.0
May42° / 30°51.312.70.0
Jun39° / 29°244.512.80.6
Jul35° / 26°9811.212.82.6
Aug32° / 25°16015.112.53.3
Sep33° / 25°10811.212.13.3
Oct36° / 25°244.511.72.2
Nov36° / 22°10.211.32.2
Dec34° / 20°10.111.23.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 58%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12674
22773
32773
42971
53070
63268
73367
83466
93466
103763
113763
123961
133961
144159
154258
164357
174357
184654
194654
204852
214852
225050
235050
245149
255248
265347
275347
285446
295446
305545

Chance of precipitation in September

Any precipitation

Kayes gets around 108 mm of rain over 11.2 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 37% and peaks near 51% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
151
250
349
449
548
647
746
845
944
1043
1142
1241
1340
1439
1538
1637
1736
1835
1934
2032
2131
2230
2329
2428
2527
2626
2725
2825
2924
3024

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 59% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1004456
2004456
3004357
4004258
5004159
6004060
7004060
8003961
9003961
10003862
11003862
12003862
13003862
14003862
15003862
16003862
17003862
18003961
19003961
20003961
21004060
22004060
23004159
24014158
25014257
26014257
27024355
28024355
29034453
30134551

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

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 6:37 AM to 6:39 AM, and sunset from 6:54 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:376:54
212.36:376:53
312.36:376:53
412.26:376:52
512.26:376:51
612.26:376:50
712.26:376:50
812.26:376:49
912.26:376:48
1012.26:376:47
1112.16:386:46
1212.16:386:46
1312.16:386:45
1412.16:386:44
1512.16:386:43
1612.16:386:42
1712.16:386:42
1812.16:386:41
1912.06:386:40
2012.06:386:39
2112.06:386:39
2212.06:386:38
2312.06:386:37
2412.06:386:36
2512.06:386:35
2611.96:386:35
2711.96:386:34
2811.96:386:33
2911.96:386:32
3011.96:396:32

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.52 kWh/m².

For context, solar energy here swings from a low near 4.73 kWh/m² to a high of 7.29 kWh/m² in April across the year — September's 5.52 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.1Bright
55.1Bright
65.2Bright
75.2Bright
85.3Bright
95.3Bright
105.3Bright
115.4Bright
125.4Bright
135.4Bright
145.5Bright
155.5Bright
165.5Bright
175.6Bright
185.6Bright
195.7Bright
205.7Bright
215.7Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
Planning a trip in September

Hazard calendar for Kayes

In seasonPeak

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

Kayes sees seasonal dust haze (February–October), heaviest in June.

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

Is September a good time to visit Kayes?

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
5.9
Beach & pool
4th-best month of the year

September is a weaker month for outdoor sightseeing in Kayes.

What to pack for Kayes in September

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

In September, Kayes sees daytime highs around 33°C and nights near 25°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Kayes 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 Kayes peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highExtremeVery highAug 18UV 13Dec 19UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar12Extreme
Apr10Very high
May9Very high
Jun10Very high
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Kayes 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 Kayes is worst in November — around 68 µg/m³ PM2.5 (unhealthy), about 4.4× the cleanest month (August, 16 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModerateUnhealthyNov 1567 µg/m³Aug 1816 µg/m³
PM2.5 (µg/m³)Level
Jan57Unhealthy
Feb67Unhealthy
Mar61Unhealthy
Apr50Poor
May48Poor
Jun41Poor
Jul22Moderate
Aug16Moderate
Sep20Moderate
Oct60Unhealthy
Nov68Unhealthy
Dec57Unhealthy
Location & terrain

Where is Kayes?

Kayes sits at 14.4°N, 11.4°W, 47 m above sea level, in Mali. The nearest listed city is Bafoulabé, 97 km away.

SélibabyEl ’AyoûnMahinaNioroKanelKédougouMatam

Topography around Kayes

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

Within 3 km, the terrain around Kayes has only modest variations in elevation — a maximum elevation change of 27 m around an average of 38 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 328 m; within 80 km, significant variations in elevation — a maximum elevation change of 561 m.

The land around Kayes is covered by artificial surfaces (57%) within 3 km, grassland (60%) within 16 km, and grassland (68%) and shrubs (24%) within 80 km.

3 km
27 m
16 km
328 m
80 km
561 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Bafoulabé 97 km · Sélibaby 112 km · El ’Ayoûn 127 km · Mahina 157 km · Nioro 217 km · Kanel 219 km · Kédougou 225 km · Matam 236 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 Kayes (14.4478°, -11.4439°, elevation 47 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).