Oyo weather in September

In September, Oyo sees average daytime highs of 29°C and overnight lows near 22°C, with 164 mm of rain across 24.7 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 Oyo's 10th-clearest and 8th-windiest month. For the whole year in context, see Oyo's year-round climate.

Daytime high
29°
10th warmest
Overnight low
22°
3rd coldest
Rainfall
164 mm
24.7 wet days
Daylight
12 hours
6:37 AM – 6:40 PM
Cloud cover
84%
10th clearest
Wind
7 km/h
8th windiest
Solar energy
3.95 kWh/m²
Travel score
3.5
out of 10

Oyo is city in Nigeria.

Density
303/km²
people per km²
Founded
1830

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 Oyo reaches about 29°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
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922

How September really feels in Oyo

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.

Oyo 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°82.211.63.8
Feb35° / 24°174.411.73.0
Mar34° / 24°4611.811.92.8
Apr32° / 24°7414.812.23.2
May31° / 24°11920.512.43.3
Jun29° / 23°14924.712.43.3
Jul28° / 22°16025.212.43.8
Aug28° / 22°15923.812.34.1
Sep29° / 22°16424.7123.5
Oct30° / 23°10920.711.83.7
Nov32° / 23°204.911.64.6
Dec33° / 22°51.511.64.4

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 94%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2595
3595
4595
5595
6694
7694
8694
9694
10694
11793
12793
13793
14793
15793
16793
17793
18793
19793
20793
21793
22793
23793
24793
25694
26694
27694
28793
29793
30793

Chance of precipitation in September

Any precipitation

Oyo gets around 164 mm of rain over 24.7 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 82% and peaks near 85% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
185
285
385
485
585
685
784
884
984
1084
1184
1284
1383
1483
1583
1682
1782
1882
1981
2081
2181
2281
2380
2480
2580
2680
2780
2880
2980
3080

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 98% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
1694
2595
3595
4496
5496
6397
7397
8397
9298
10298
11298
12298
13298
14199
15199
16199
17199
18199
19199
20199
21199
22199
23199
24199
25199
26199
27199
280100
290100
300100

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
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 6:39 AM to 6:35 AM, and sunset from 6:49 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:396:49
212.16:396:48
312.16:396:47
412.16:396:47
512.16:396:46
612.16:396:46
712.16:396:45
812.16:396:45
912.16:386:44
1012.16:386:43
1112.16:386:43
1212.16:386:42
1312.16:386:42
1412.16:386:41
1512.16:376:40
1612.06:376:40
1712.06:376:39
1812.06:376:39
1912.06:376:38
2012.06:376:37
2112.06:376:37
2212.06:366:36
2312.06:366:36
2412.06:366:35
2512.06:366:35
2612.06:366:34
2712.06:366:33
2812.06:366:33
2911.96:366:32
3011.96:356:32

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.95 kWh/m².

For context, solar energy here swings from a low near 3.67 kWh/m² to a high of 5.72 kWh/m² in February across the year — September's 3.95 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.9Moderate
93.9Moderate
103.9Moderate
113.9Moderate
123.9Moderate
133.9Moderate
143.9Moderate
154.0Moderate
164.0Moderate
174.0Moderate
184.0Bright
194.0Bright
204.0Bright
214.0Bright
224.0Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.1Bright
304.1Bright
Planning a trip in September

Hazard calendar for Oyo

In seasonPeak

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

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

Oyo 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 Oyo?

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

3.5
Sightseeing
7th-best month of the year
4.3
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Oyo.

What to pack for Oyo in September

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

In September, Oyo sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 25 days see rain.

light clothesrain gear

UV index in Oyo 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 Oyo peaks around March 24 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 20UV 8
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec7Very high

Air quality in Oyo 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 Oyo is worst in January — around 155 µg/m³ PM2.5 (very unhealthy), about 3.6× the cleanest month (July, 43 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyPoorUnhealthyJan 17153 µg/m³Jul 2443 µg/m³
PM2.5 (µg/m³)Level
Jan155Very unhealthy
Feb144Unhealthy
Mar78Unhealthy
Apr68Unhealthy
May56Unhealthy
Jun50Poor
Jul43Poor
Aug43Poor
Sep55Poor
Oct74Unhealthy
Nov89Unhealthy
Dec142Unhealthy
Location & terrain

Where is Oyo?

Oyo sits at 7.9°N, 3.9°E, 286 m above sea level, in Nigeria. The nearest listed city is Fiditi, 16 km away.

Topography around Oyo

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

Within 3 km, the terrain around Oyo has only modest variations in elevation — a maximum elevation change of 98 m around an average of 288 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 185 m; within 80 km, significant variations in elevation — a maximum elevation change of 543 m.

The land around Oyo is covered by artificial surfaces (78%) within 3 km, cropland (31%), grassland (29%) and trees (20%) within 16 km, and trees (51%) within 80 km.

3 km
98 m
16 km
185 m
80 km
543 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Fiditi 16 km · Iwo 37 km · Iseyin 39 km · Olupona 40 km · Ejigbo 42 km · Inisa 44 km · Lalupon 45 km · Ogbomoso 46 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 Oyo (7.8537°, 3.9324°, elevation 286 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).