Ilorin weather in September

In September, Ilorin sees average daytime highs of 29°C and overnight lows near 22°C, with 157 mm of rain across 21.2 wet days and about 12 hours of daylight. It is the 10th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 1% 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 Ilorin's 10th-clearest and 9th-windiest month. For the whole year in context, see Ilorin's year-round climate.

Daytime high
29°
10th warmest
Overnight low
22°
4th coldest
Rainfall
157 mm
21.2 wet days
Daylight
12 hours
6:35 AM – 6:38 PM
Cloud cover
79%
10th clearest
Wind
7 km/h
9th windiest
Solar energy
4.36 kWh/m²
Travel score
3.8
out of 10

Ilorin is city in Nigeria.

Density
1,412/km²
people per km²
Founded
~18 CE

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Ilorin reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, September runs about 1°C warmer than August and about 2°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12822
22922
32922
42922
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
263022
273022
283022
293022
303022

How September really feels in Ilorin

Once humidity and wind are folded in, September averages 21 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
21
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.

Ilorin weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 21°20.511.63.7
Feb36° / 23°41.211.72.5
Mar37° / 24°224.711.91.9
Apr35° / 24°501012.22.3
May33° / 24°8715.912.42.9
Jun31° / 23°11519.112.53.5
Jul29° / 22°12821.412.43.9
Aug28° / 22°15220.812.34.2
Sep29° / 22°15721.2123.8
Oct31° / 22°781511.84.0
Nov34° / 22°51.411.63.9
Dec34° / 21°10.211.53.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 85%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1991
2991
31090
41090
51090
61189
71288
81288
91387
101387
111486
121486
131585
141585
151684
161684
171684
181783
191783
201783
211882
221882
231882
241981
251981
261981
272080
282080
292080
302179

Chance of precipitation in September

Any precipitation

Ilorin gets around 157 mm of rain over 21.2 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 71% and peaks near 75% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
175
275
375
475
574
674
773
873
972
1072
1172
1271
1371
1471
1570
1670
1770
1870
1969
2069
2169
2269
2369
2469
2568
2668
2767
2867
2967
3066

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 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
11189
21090
3991
4892
5793
6793
7694
8595
9595
10496
11397
12397
13397
14298
15298
16298
17298
18298
19298
20298
21199
22199
23199
24199
25199
26199
27199
28199
29199
30199

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 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
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 6:37 AM to 6:33 AM, and sunset from 6:46 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:376:46
212.26:376:46
312.16:366:45
412.16:366:45
512.16:366:44
612.16:366:44
712.16:366:43
812.16:366:42
912.16:366:42
1012.16:366:41
1112.16:356:41
1212.16:356:40
1312.16:356:39
1412.16:356:39
1512.16:356:38
1612.06:356:38
1712.06:356:37
1812.06:356:36
1912.06:346:36
2012.06:346:35
2112.06:346:34
2212.06:346:34
2312.06:346:33
2412.06:346:33
2512.06:346:32
2612.06:346:31
2712.06:336:31
2811.96:336:30
2911.96:336:30
3011.96:336:29

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.36 kWh/m².

For context, solar energy here swings from a low near 3.95 kWh/m² to a high of 6.13 kWh/m² in February across the year — September's 4.36 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.3Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Ilorin

In seasonPeak

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

Ilorin's rainy season runs May–October, when most of the year's rain falls.

Ilorin sees seasonal dust haze (January–April), heaviest in February.

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

Is September a good time to visit Ilorin?

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

3.8
Sightseeing
5th-best month of the year
4.9
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Ilorin.

What to pack for Ilorin in September

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

In September, Ilorin sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 21 days see rain.

light clothesrain gear

UV index in Ilorin 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 Ilorin peaks around March 24 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 24UV 12Dec 19UV 8
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Ilorin 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 Ilorin is worst in February — around 140 µg/m³ PM2.5 (unhealthy), about 4.0× the cleanest month (July, 35 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyFeb 8140 µg/m³Jul 1935 µg/m³
PM2.5 (µg/m³)Level
Jan139Unhealthy
Feb140Unhealthy
Mar77Unhealthy
Apr62Unhealthy
May44Poor
Jun39Poor
Jul35Moderate
Aug37Poor
Sep46Poor
Oct68Unhealthy
Nov93Unhealthy
Dec124Unhealthy
Location & terrain

Where is Ilorin?

Ilorin sits at 8.5°N, 4.5°E, 320 m above sea level, in Nigeria. The nearest listed city is Offa, 43 km away.

Topography around Ilorin

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

Within 3 km, the terrain around Ilorin has only modest variations in elevation — a maximum elevation change of 70 m around an average of 300 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 167 m; within 80 km, significant variations in elevation — a maximum elevation change of 589 m.

The land around Ilorin is covered by artificial surfaces (90%) within 3 km, shrubs (28%), artificial surfaces (24%) and cropland (20%) within 16 km, and shrubs (35%) and trees (32%) within 80 km.

3 km
70 m
16 km
167 m
80 km
589 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Offa 43 km · Ogbomoso 52 km · Igbeti 53 km · Oyan 55 km · Bode Saadu 56 km · Ikirun 66 km · Ila Orangun 67 km · Otan Ayegbaju 67 km

Nigeria travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type D / G
230 V · 50 Hz
Prices
≈ 13% of US
price level, 2025
GDP per capita
$1,224
2025
Happiness
4.8 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
15.7
per 100k, 2023
Road deaths
20.7
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
High
EF EPI 569
Religion
Muslim 54%other Christian 35%Roman Catholic 11%other 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 Ilorin (8.4966°, 4.5421°, elevation 320 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).