Bla weather in September

In September, Bla sees average daytime highs of 32°C and overnight lows near 24°C, with 123 mm of rain across 16.5 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 31°C in the first days to 33°C by the end. The sky is clear or mostly clear about 25% 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 Bla's 10th-clearest and 11th-windiest month. For the whole year in context, see Bla's year-round climate.

Daytime high
32°
10th warmest
Overnight low
24°
6th coldest
Rainfall
123 mm
16.5 wet days
Daylight
12 h 06 min
6:15 AM – 6:19 PM
Cloud cover
61%
10th clearest
Wind
7 km/h
11th windiest
Solar energy
5.84 kWh/m²
Travel score
3.5
out of 10

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 33°C by the end.

A typical September day in Bla reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°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)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163223
173224
183224
193224
203224
213224
223224
233224
243224
253224
263324
273324
283324
293324
303324

How September really feels in Bla

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.

Bla weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 18°10.211.35.5
Feb34° / 20°00.111.63.6
Mar38° / 24°20.411.91.6
Apr39° / 27°82.512.30.6
May38° / 28°256.512.60.9
Jun36° / 26°4710.312.72.1
Jul32° / 24°1351812.73.2
Aug31° / 23°21221.912.43.4
Sep32° / 24°12316.512.13.5
Oct35° / 24°31711.73.0
Nov35° / 21°10.211.43.2
Dec32° / 18°0011.35.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13070
23169
33268
43466
53565
63664
73862
83961
93961
104258
114357
124456
134555
144654
154753
164852
175050
185149
195248
205248
215446
225545
235644
245743
255842
265842
276040
286139
296139
306238

Chance of precipitation in September

Any precipitation

Bla gets around 123 mm of rain over 16.5 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 55% and peaks near 70% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
170
269
368
467
566
665
764
863
962
1061
1160
1259
1358
1457
1556
1655
1754
1853
1952
2051
2149
2248
2347
2445
2544
2642
2741
2839
2938
3037

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100964
200964
300955
400955
500955
600955
700946
800946
900937
1000937
1100928
1200928
1300919
14009010
15009010
16008911
17008911
18008812
19008812
20008812
21018712
22018712
23018712
24028612
25128611
26138511
27138610
28148510
2915859
3016858

Wind in September

Winds average 7 km/h in September.

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 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 6:15 AM to 6:15 AM, and sunset from 6:30 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:156:30
212.26:156:30
312.26:156:29
412.26:156:28
512.26:156:28
612.26:156:27
712.26:156:26
812.26:156:25
912.26:156:25
1012.16:156:24
1112.16:156:23
1212.16:156:22
1312.16:156:22
1412.16:156:21
1512.16:156:20
1612.16:156:19
1712.16:156:19
1812.06:156:18
1912.06:156:17
2012.06:156:17
2112.06:156:16
2212.06:156:15
2312.06:156:14
2412.06:156:14
2512.06:156:13
2611.96:156:12
2711.96:156:11
2811.96:156:11
2911.96:156:10
3011.96:156:09

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.84 kWh/m².

For context, solar energy here swings from a low near 5.16 kWh/m² to a high of 6.79 kWh/m² in March across the year — September's 5.84 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.5Bright
55.5Bright
65.5Bright
75.6Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
206.0Bright
216.0Bright
226.0Intense
236.0Intense
246.0Intense
256.1Intense
266.1Intense
276.1Intense
286.1Intense
296.1Intense
306.1Intense
Planning a trip in September

Hazard calendar for Bla

In seasonPeak

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

Bla's monsoon runs July–September, when most of the year's rain falls.

Bla sees seasonal dust haze (February–July), heaviest in April.

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

Is September a good time to visit Bla?

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

3.5
Sightseeing
4th-best month of the year
5.5
Beach & pool
6th-best month of the year

September is a weaker month for outdoor sightseeing in Bla.

What to pack for Bla in September

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

In September, Bla sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

UV index in Bla 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 Bla peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 18UV 13Jan 11UV 8
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar14Extreme
Apr11Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Bla 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 Bla is worst in February — around 62 µg/m³ PM2.5 (unhealthy), about 4.7× the cleanest month (August, 13 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorFeb 2261 µg/m³Aug 1614 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb62Unhealthy
Mar61Unhealthy
Apr50Poor
May33Moderate
Jun27Moderate
Jul18Moderate
Aug13Moderate
Sep19Moderate
Oct26Moderate
Nov28Moderate
Dec41Poor
Location & terrain

Where is Bla?

Bla sits at 13.0°N, 5.8°W, 295 m above sea level, in Mali. The nearest listed city is Koutiala, 70 km away.

SanDougabougouKé-Macina

Topography around Bla

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

Within 3 km, the terrain around Bla has only modest variations in elevation — a maximum elevation change of 20 m around an average of 290 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 84 m; within 80 km, only modest variations in elevation — a maximum elevation change of 152 m.

The land around Bla is covered by cropland (59%) within 3 km, cropland (52%), shrubs (25%) and grassland (21%) within 16 km, and cropland (44%), shrubs (28%) and grassland (25%) within 80 km.

3 km
20 m
16 km
84 m
80 km
152 m
shrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Koutiala 70 km · Pèlèngana 73 km · Ségou 77 km · Diourou 82 km · Markala 89 km · San 101 km · Dougabougou 104 km · Ké-Macina 121 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 Bla (12.9508°, -5.7556°, elevation 295 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).