Diourbel weather in September

In September, Diourbel sees average daytime highs of 32°C and overnight lows near 24°C, with 124 mm of rain across 14.1 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 19% 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 Diourbel's 11th-clearest and 12th-windiest month. For the whole year in context, see Diourbel's year-round climate.

Daytime high
32°
10th warmest
Overnight low
24°
10th coldest
Rainfall
124 mm
14.1 wet days
Daylight
12 h 06 min
6:57 AM – 7:02 PM
Cloud cover
66%
11th clearest
Wind
8 km/h
12th windiest
Solar energy
5.44 kWh/m²
Travel score
3.4
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 32°C through the month.

A typical September day in Diourbel 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 30°C and 34°C. Set against its neighbours, September runs on par with August and about 2°C cooler than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13224
23224
33224
43224
53224
63224
73224
83224
93224
103224
113224
123224
133224
143224
153224
163224
173224
183224
193224
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324

How September really feels in Diourbel

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
30 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.

Diourbel weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 17°30.311.24.9
Feb34° / 19°10.211.53.8
Mar36° / 19°00.111.92.6
Apr37° / 20°0012.32.1
May37° / 21°0012.72.1
Jun36° / 23°61.312.82.7
Jul34° / 24°638.212.83.2
Aug32° / 25°15015.612.53.2
Sep32° / 24°12414.112.13.4
Oct35° / 23°294.211.73.0
Nov35° / 21°10.111.33.0
Dec33° / 18°20.311.14.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 19% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12179
22278
32278
42476
52575
62773
72872
82971
93268
103268
113565
123565
133763
143862
153961
164060
174258
184258
194357
204555
214555
224654
234852
244852
255050
265149
275347
285446
295545
305644

Chance of precipitation in September

Any precipitation

Diourbel gets around 124 mm of rain over 14.1 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 46% and peaks near 56% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
156
256
356
455
555
654
754
853
953
1052
1151
1251
1350
1449
1548
1648
1747
1846
1945
2043
2142
2241
2339
2438
2536
2634
2733
2831
2929
3028

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
101981
201981
301981
401882
501882
601882
701783
801783
901684
1001684
1101585
1201585
1301486
1401486
1501486
1601486
1701486
1801486
1901486
2001585
2101585
2201684
2301783
2401882
2502080
2602179
2702278
2812475
2912574
3012673

Wind in September

Winds average 8 km/h in September, the calmest month.

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
38calm
48calm
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 6:56 AM to 6:58 AM, and sunset from 7:13 PM to 6:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:567:13
212.36:567:13
312.36:567:12
412.26:567:11
512.26:567:10
612.26:567:10
712.26:567:09
812.26:567:08
912.26:577:07
1012.26:577:06
1112.26:577:06
1212.16:577:05
1312.16:577:04
1412.16:577:03
1512.16:577:03
1612.16:577:02
1712.16:577:01
1812.16:577:00
1912.06:576:59
2012.06:576:59
2112.06:576:58
2212.06:576:57
2312.06:576:56
2412.06:576:55
2512.06:576:55
2611.96:576:54
2711.96:586:53
2811.96:586:52
2911.96:586:52
3011.96:586:51

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.44 kWh/m².

For context, solar energy here swings from a low near 5.16 kWh/m² to a high of 7.36 kWh/m² in April across the year — September's 5.44 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.2Bright
75.2Bright
85.2Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.4Bright
145.4Bright
155.4Bright
165.5Bright
175.5Bright
185.5Bright
195.6Bright
205.6Bright
215.6Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.9Bright
Planning a trip in September

Hazard calendar for Diourbel

In seasonPeak

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

Diourbel 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 Diourbel?

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

3.4
Sightseeing
4th-best month of the year
5.7
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Diourbel.

What to pack for Diourbel in September

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

In September, Diourbel sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 14 days see rain.

light clothesrain gearsun protection

UV index in Diourbel 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 Diourbel peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 highMar 18UV 13Dec 17UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr12Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Diourbel 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 Diourbel is worst in February — around 104 µg/m³ PM2.5 (unhealthy), about 2.8× the cleanest month (August, 37 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyFeb 8104 µg/m³Aug 1838 µg/m³
PM2.5 (µg/m³)Level
Jan103Unhealthy
Feb104Unhealthy
Mar80Unhealthy
Apr60Unhealthy
May57Unhealthy
Jun74Unhealthy
Jul49Poor
Aug37Poor
Sep45Poor
Oct66Unhealthy
Nov69Unhealthy
Dec96Unhealthy
Location & terrain

Where is Diourbel?

Diourbel sits at 14.6°N, 16.2°W, 8 m above sea level, in Senegal. The nearest listed city is Tiébo, 2.0 km away.

Keur MédouneFatickMbakéGandiaye

Topography around Diourbel

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

Within 3 km, the terrain around Diourbel has only modest variations in elevation — a maximum elevation change of 30 m around an average of 11 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, only modest variations in elevation — a maximum elevation change of 131 m.

The land around Diourbel is covered by artificial surfaces (40%), cropland (35%) and grassland (20%) within 3 km, cropland (75%) and grassland (20%) within 16 km, and cropland (63%) and grassland (28%) within 80 km.

3 km
30 m
16 km
43 m
80 km
131 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Tiébo 2.0 km · Gossas Village 23 km · Bambey 24 km · Poukham Un 37 km · Keur Médoune 39 km · Fatick 39 km · Mbaké 39 km · Gandiaye 45 km

Senegal travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / D / E / K
230 V · 50 Hz
Prices
≈ 36% of US
price level, 2025
GDP per capita
$1,955
2025
Happiness
4.8 / 10
World Happiness, 2025
Safe drinking water
27%
of population, 2024
Homicide rate
0.3
per 100k, 2015
Road deaths
23.5
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 442
Religion
Muslim 97%Christian 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 Diourbel (14.6479°, -16.2436°, elevation 8 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).