Osogbo weather in September

In September, Osogbo sees average daytime highs of 29°C and overnight lows near 22°C, with 204 mm of rain across 25.8 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 0% 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 Osogbo's 10th-clearest and 9th-windiest month. For the whole year in context, see Osogbo's year-round climate.

Daytime high
29°
10th warmest
Overnight low
22°
4th coldest
Rainfall
204 mm
25.8 wet days
Daylight
12 hours
6:35 AM – 6:37 PM
Cloud cover
85%
10th clearest
Wind
6 km/h
9th windiest
Solar energy
3.93 kWh/m²
Travel score
3.4
out of 10

Osogbo is city and local government area in Osun State, Nigeria.

Density
13,723/km²
people per km²

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 Osogbo 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 26°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112822
122822
132822
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922

How September really feels in Osogbo

Once humidity and wind are folded in, September averages 10 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
10
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.

Osogbo 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° / 22°112.311.63.8
Feb35° / 23°235.111.73.0
Mar34° / 24°6212.811.92.9
Apr32° / 24°8316.212.23.2
May31° / 23°14021.812.33.2
Jun29° / 22°18125.312.43.3
Jul28° / 22°18126.512.43.7
Aug28° / 22°17724.612.34.0
Sep29° / 22°20425.8123.4
Oct30° / 22°15424.111.83.4
Nov32° / 22°357.411.64.3
Dec33° / 21°61.511.64.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1496
2496
3496
4496
5595
6595
7595
8595
9595
10595
11694
12694
13694
14694
15694
16694
17694
18694
19694
20694
21694
22694
23694
24694
25694
26694
27694
28694
29694
30694

Chance of precipitation in September

Any precipitation

Osogbo gets around 204 mm of rain over 25.8 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 86% and peaks near 88% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
187
288
388
488
588
687
787
887
987
1087
1187
1287
1387
1487
1587
1687
1786
1886
1986
2086
2185
2285
2385
2485
2584
2684
2784
2884
2984
3084

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 95% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
11090
2991
3991
4892
5793
6793
7694
8694
9595
10595
11595
12496
13496
14496
15496
16496
17496
18496
19397
20397
21397
22397
23397
24397
25397
26397
27298
28298
29298
30298

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 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
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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
212.16:376:45
312.16:376:45
412.16:376:44
512.16:366:44
612.16:366:43
712.16:366:43
812.16:366:42
912.16:366:41
1012.16:366:41
1112.16:366:40
1212.16:356:40
1312.16:356:39
1412.16:356:39
1512.06:356:38
1612.06:356:37
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
2612.06:336:32
2712.06:336:31
2812.06:336:30
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 3.93 kWh/m².

For context, solar energy here swings from a low near 3.65 kWh/m² to a high of 5.71 kWh/m² in February across the year — September's 3.93 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
153.9Moderate
164.0Moderate
174.0Moderate
184.0Moderate
194.0Bright
204.0Bright
214.0Bright
224.0Bright
234.0Bright
244.0Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.1Bright
Planning a trip in September

Hazard calendar for Osogbo

In seasonPeak

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

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

Osogbo 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 Osogbo?

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

3.4
Sightseeing
6th-best month of the year
4.1
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Osogbo.

What to pack for Osogbo in September

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

In September, Osogbo sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

UV index in Osogbo 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 Osogbo peaks around March 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highMar 23UV 12Dec 21UV 7
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug10Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec7Very high

Air quality in Osogbo 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 Osogbo is worst in January — around 170 µg/m³ PM2.5 (very unhealthy), about 3.8× the cleanest month (July, 45 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyJan 17168 µg/m³Jul 2345 µg/m³
PM2.5 (µg/m³)Level
Jan170Very unhealthy
Feb158Very unhealthy
Mar86Unhealthy
Apr72Unhealthy
May58Unhealthy
Jun52Poor
Jul45Poor
Aug46Poor
Sep58Unhealthy
Oct78Unhealthy
Nov100Unhealthy
Dec157Very unhealthy
Location & terrain

Where is Osogbo?

Osogbo sits at 7.8°N, 4.6°E, 336 m above sea level, in Nigeria. The nearest listed city is Ilobu, 11 km away.

Topography around Osogbo

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

Within 3 km, the terrain around Osogbo has only modest variations in elevation — a maximum elevation change of 89 m around an average of 320 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 191 m; within 80 km, large variations in elevation — a maximum elevation change of 647 m.

The land around Osogbo is covered by artificial surfaces (77%) within 3 km, trees (63%) within 16 km, and trees (66%) within 80 km.

3 km
89 m
16 km
191 m
80 km
647 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Ilobu 11 km · Ede 14 km · Ikirun 20 km · Ilesa 26 km · Inisa 26 km · Ijebu-Jesa 30 km · Ejigbo 31 km · Ile-Ife 32 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 Osogbo (7.771°, 4.557°, elevation 336 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).