Offa weather in September

In September, Offa sees average daytime highs of 28°C and overnight lows near 21°C, with 211 mm of rain across 25.2 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 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 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 Offa's 10th-clearest and 9th-windiest month. For the whole year in context, see Offa's year-round climate.

Daytime high
28°
10th warmest
Overnight low
21°
4th coldest
Rainfall
211 mm
25.2 wet days
Daylight
12 hours
6:34 AM – 6:37 PM
Cloud cover
83%
10th clearest
Wind
7 km/h
9th windiest
Solar energy
4.22 kWh/m²
Travel score
3.6
out of 10

Offa is town in Kwara State, Nigeria.

Density
237/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 28°C through the month.

A typical September day in Offa reaches about 28°C in the afternoon and slips back to 21°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 2°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122821
132821
142821
152821
162821
172921
182921
192921
202921
212921
222921
232921
242922
252922
262922
272922
282922
292922
302922

How September really feels in Offa

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.

Offa 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° / 20°5111.64.4
Feb34° / 22°102.611.73.3
Mar35° / 23°347.411.92.8
Apr33° / 23°7413.812.22.9
May31° / 23°12520.612.43.1
Jun29° / 22°16023.212.53.5
Jul28° / 22°15723.712.44.0
Aug27° / 21°16422.812.34.2
Sep28° / 21°21125.2123.6
Oct30° / 22°14820.611.83.7
Nov32° / 22°142.711.64.6
Dec33° / 20°20.611.54.7

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 8% of September, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2595
3595
4694
5694
6694
7694
8694
9694
10793
11793
12793
13793
14793
15892
16892
17892
18991
19991
20991
21991
22991
231090
241090
251189
261288
271288
281288
291288
301288

Chance of precipitation in September

Any precipitation

Offa gets around 211 mm of rain over 25.2 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 84% and peaks near 85% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
182
282
383
482
582
682
782
882
983
1083
1183
1283
1384
1484
1584
1684
1785
1885
1985
2085
2185
2285
2385
2485
2585
2685
2785
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 87% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
12476
22377
32278
42278
52179
62080
72080
81981
91882
101882
111783
121684
131684
141585
151486
161387
171288
181189
191189
201090
21991
22892
23793
24793
25694
26694
27595
28595
29595
30496

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 6:36 AM to 6:32 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)
112.26:366:46
212.26:366:45
312.16:366:44
412.16:366:44
512.16:366:43
612.16:356:43
712.16:356:42
812.16:356:42
912.16:356:41
1012.16:356:40
1112.16:356:40
1212.16:356:39
1312.16:356:39
1412.16:346:38
1512.16:346:37
1612.06:346:37
1712.06:346:36
1812.06:346:36
1912.06:346:35
2012.06:346:34
2112.06:336:34
2212.06:336:33
2312.06:336:33
2412.06:336:32
2512.06:336:31
2612.06:336:31
2712.06:336:30
2812.06:336:30
2911.96:326:29
3011.96:326:29

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.22 kWh/m².

For context, solar energy here swings from a low near 3.86 kWh/m² to a high of 6.01 kWh/m² in February across the year — September's 4.22 kWh/m² sits near the bottom.

012345151015202530
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Moderate
44.0Bright
54.0Bright
64.0Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Offa

In seasonPeak

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

Offa's monsoon runs May–October, when most of the year's rain falls.

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

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

Is September a good time to visit Offa?

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

3.6
Sightseeing
7th-best month of the year
4.2
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Offa.

What to pack for Offa in September

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

In September, Offa sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. About 25 days see rain.

light clothesrain gear

UV index in Offa 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 Offa peaks around September 19 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 highSep 19UV 12Dec 20UV 8
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Offa 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 Offa 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 Offa?

Offa sits at 8.1°N, 4.7°E, 419 m above sea level, in Nigeria. The nearest listed city is Oyan, 12 km away.

Topography around Offa

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

Within 3 km, the terrain around Offa has only modest variations in elevation — a maximum elevation change of 65 m around an average of 416 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 226 m; within 80 km, large variations in elevation — a maximum elevation change of 612 m.

The land around Offa is covered by artificial surfaces (65%) within 3 km, grassland (38%) and trees (36%) within 16 km, and trees (46%) and shrubs (24%) within 80 km.

3 km
65 m
16 km
226 m
80 km
612 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Oyan 12 km · Otan Ayegbaju 24 km · Ila Orangun 25 km · Ikirun 27 km · Oke Ila 36 km · Oke Mesi 43 km · Ilobu 43 km · Ilorin 43 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 Offa (8.1491°, 4.7207°, elevation 419 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).