Gbongan weather in September

In September, Gbongan sees average daytime highs of 28°C and overnight lows near 22°C, with 199 mm of rain across 26.8 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 28°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 06 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Gbongan's 10th-clearest and 8th-windiest month. For the whole year in context, see Gbongan's year-round climate.

Daytime high
28°
10th warmest
Overnight low
22°
4th coldest
Rainfall
199 mm
26.8 wet days
Daylight
12 hours
6:36 AM – 6:38 PM
Cloud cover
85%
10th clearest
Wind
6 km/h
8th windiest
Solar energy
3.89 kWh/m²
Travel score
3.3
out of 10

Gbongan is town in Osun State, Nigeria.

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 28°C through the month.

A typical September day in Gbongan reaches about 28°C in the afternoon and slips back to 22°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°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
142822
152822
162822
172822
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922

How September really feels in Gbongan

Once humidity and wind are folded in, September averages 5 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
5
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.

Gbongan 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
Jan33° / 22°133.411.63.9
Feb34° / 24°246.211.83.1
Mar33° / 24°6215.111.92.9
Apr32° / 24°9818.712.23.1
May30° / 23°15323.612.33.2
Jun29° / 23°18827.112.43.2
Jul28° / 22°19427.212.43.6
Aug28° / 22°18125.712.23.8
Sep28° / 22°19926.8123.3
Oct30° / 23°14324.211.83.4
Nov31° / 23°318.411.74.4
Dec33° / 22°82.411.64.6

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 5% of September, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1496
2496
3496
4595
5595
6595
7595
8595
9595
10595
11595
12595
13595
14595
15595
16595
17595
18595
19595
20595
21595
22595
23595
24595
25595
26595
27595
28595
29595
30595

Chance of precipitation in September

Any precipitation

Gbongan gets around 199 mm of rain over 26.8 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 89% and peaks near 92% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
191
292
392
492
591
691
791
890
990
1090
1189
1289
1389
1489
1589
1688
1788
1888
1988
2088
2188
2288
2388
2488
2588
2688
2788
2888
2988
3088

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 99% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
1397
2397
3397
4298
5298
6298
7298
8298
9199
10199
11199
12199
13199
14199
15199
16199
17199
18199
19199
20199
21199
22199
230100
240100
250100
260100
270100
280100
290100
300100

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 06 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 12 minutes over September. Sunrise moves from 6:38 AM to 6:34 AM, and sunset from 6:47 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:386:47
212.16:386:46
312.16:386:46
412.16:386:45
512.16:376:44
612.16:376:44
712.16:376:43
812.16:376:43
912.16:376:42
1012.16:376:42
1112.16:366:41
1212.16:366:40
1312.16:366:40
1412.16:366:39
1512.06:366:39
1612.06:366:38
1712.06:366:38
1812.06:356:37
1912.06:356:36
2012.06:356:36
2112.06:356:35
2212.06:356:35
2312.06:356:34
2412.06:346:33
2512.06:346:33
2612.06:346:32
2712.06:346:32
2812.06:346:31
2911.96:346:31
3011.96:346:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.89 kWh/m².

For context, solar energy here swings from a low near 3.63 kWh/m² to a high of 5.57 kWh/m² in February across the year — September's 3.89 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.7Moderate
43.7Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.9Moderate
143.9Moderate
153.9Moderate
163.9Moderate
173.9Moderate
183.9Moderate
194.0Moderate
204.0Moderate
214.0Moderate
224.0Moderate
234.0Moderate
244.0Bright
254.0Bright
264.0Bright
274.0Bright
284.0Bright
294.0Bright
304.0Bright
Planning a trip in September

Hazard calendar for Gbongan

In seasonPeak

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

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

Gbongan 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 Gbongan?

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

3.3
Sightseeing
7th-best month of the year
4.0
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Gbongan.

What to pack for Gbongan in September

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

In September, Gbongan sees daytime highs around 28°C and nights near 22°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in Gbongan 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 Gbongan 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 Gbongan 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 Gbongan 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 Gbongan?

Gbongan sits at 7.5°N, 4.4°E, 236 m above sea level, in Nigeria. The nearest listed city is Modakeke, 15 km away.

Topography around Gbongan

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

Within 3 km, the terrain around Gbongan has only modest variations in elevation — a maximum elevation change of 84 m around an average of 229 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 183 m; within 80 km, large variations in elevation — a maximum elevation change of 740 m.

The land around Gbongan is covered by trees (76%) and artificial surfaces (20%) within 3 km, trees (85%) within 16 km, and trees (79%) within 80 km.

3 km
84 m
16 km
183 m
80 km
740 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Modakeke 15 km · Ikire 22 km · Olupona 22 km · Ile-Ife 23 km · Apomu 23 km · Iwo 26 km · Ede 30 km · Lalupon 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 Gbongan (7.4773°, 4.3535°, elevation 236 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).