Iyesi weather in September

In September, Iyesi sees average daytime highs of 29°C and overnight lows near 23°C, with 202 mm of rain across 27.2 wet days and about 12 hours of daylight. It is the 10th-warmest and 3rd-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 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 Iyesi's 10th-clearest and 6th-windiest month. For the whole year in context, see Iyesi's year-round climate.

Daytime high
29°
10th warmest
Overnight low
23°
3rd coldest
Rainfall
202 mm
27.2 wet days
Daylight
12 hours
6:41 AM – 6:43 PM
Cloud cover
85%
10th clearest
Wind
7 km/h
6th windiest
Solar energy
4.05 kWh/m²
Travel score
3.2
out of 10

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 Iyesi reaches about 29°C in the afternoon and slips back to 23°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 on par with August and about 1°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12823
22823
32823
42823
52823
62823
72823
82823
92823
102823
112823
122823
132823
142923
152923
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923

How September really feels in Iyesi

Once humidity and wind are folded in, September averages 12 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
12
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.

Iyesi weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 23°328.511.74.1
Feb33° / 25°4912.411.83.3
Mar32° / 25°9620122.9
Apr32° / 25°13922.412.12.8
May31° / 24°21827.712.32.7
Jun29° / 23°24428.112.43.0
Jul28° / 23°18626.412.33.7
Aug28° / 23°14222.912.24.2
Sep29° / 23°20227.2123.2
Oct30° / 23°20228.311.92.9
Nov31° / 24°8619.111.73.5
Dec32° / 23°319.711.64.3

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 (%)
1496
2496
3496
4496
5496
6496
7496
8595
9595
10595
11595
12595
13595
14595
15595
16595
17694
18694
19694
20694
21694
22793
23793
24793
25793
26793
27892
28892
29892
30892

Chance of precipitation in September

Any precipitation

Iyesi gets around 202 mm of rain over 27.2 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 91% and peaks near 93% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
187
288
388
489
589
690
790
890
990
1091
1191
1291
1391
1492
1592
1692
1792
1892
1991
2091
2191
2291
2391
2492
2592
2692
2792
2892
2993
3093

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 96% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1991
2991
3991
4991
5982
6982
7982
8982
9982
10982
11982
12982
13973
14973
15973
16973
17973
18973
19964
20964
21964
22964
23955
24955
25955
26946
27937
28937
29928
30919

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
137calm
147calm
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 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 6:43 AM to 6:38 AM, and sunset from 6:51 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:436:51
212.16:436:50
312.16:436:50
412.16:436:49
512.16:426:49
612.16:426:48
712.16:426:48
812.16:426:47
912.16:426:47
1012.16:426:46
1112.16:416:45
1212.16:416:45
1312.16:416:44
1412.06:416:44
1512.06:416:43
1612.06:416:43
1712.06:406:42
1812.06:406:42
1912.06:406:41
2012.06:406:40
2112.06:406:40
2212.06:396:39
2312.06:396:39
2412.06:396:38
2512.06:396:38
2612.06:396:37
2712.06:396:37
2812.06:386:36
2912.06:386:36
3011.96:386:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.05 kWh/m².

For context, solar energy here swings from a low near 3.88 kWh/m² to a high of 5.36 kWh/m² in February across the year — September's 4.05 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
43.9Moderate
53.9Moderate
64.0Moderate
74.0Moderate
84.0Moderate
94.0Moderate
104.0Moderate
114.0Moderate
124.0Bright
134.0Bright
144.0Bright
154.0Bright
164.0Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for Iyesi

In seasonPeak

None of Iyesi's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

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

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

Is September a good time to visit Iyesi?

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

3.2
Sightseeing
7th-best month of the year
3.9
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Iyesi.

What to pack for Iyesi in September

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

In September, Iyesi sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

Sea temperature near Iyesi in September

The nearest coast averages about 26°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 32 km away) is warmest in May at about 29°C and coldest in August near 25°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Warm
Feb28Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun28Warm
Jul26Warm
Aug25Warm
Sep26Warm
Oct28Warm
Nov29Tropical
Dec29Tropical

UV index in Iyesi 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 Iyesi peaks around March 24 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near February 9 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 highExtremeExtremeVery highMar 24UV 12Feb 9UV 7
UV index (midday)Level
Jan8Very high
Feb7Very high
Mar13Extreme
Apr12Extreme
May10Extreme
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep12Extreme
Oct12Extreme
Nov9Very high
Dec8Very high

Air quality in Iyesi 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 Iyesi is worst in January — around 139 µg/m³ PM2.5 (unhealthy), about 3.7× the cleanest month (August, 37 µg/m³).

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

0306090120150JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyJan 14137 µg/m³Aug 1238 µg/m³
PM2.5 (µg/m³)Level
Jan139Unhealthy
Feb117Unhealthy
Mar69Unhealthy
Apr64Unhealthy
May55Poor
Jun48Poor
Jul40Poor
Aug37Poor
Sep47Poor
Oct65Unhealthy
Nov76Unhealthy
Dec127Unhealthy
Location & terrain

Where is Iyesi?

Iyesi sits at 6.7°N, 3.2°E, 53 m above sea level, in Nigeria. The nearest listed city is River Atuwara, 5.0 km away.

Topography around Iyesi

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

Within 3 km, the terrain around Iyesi has only modest variations in elevation — a maximum elevation change of 62 m around an average of 46 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 92 m; within 80 km, only modest variations in elevation — a maximum elevation change of 220 m.

The land around Iyesi is covered by artificial surfaces (70%) and trees (22%) within 3 km, artificial surfaces (51%) and trees (33%) within 16 km, and trees (43%) and water (26%) within 80 km.

3 km
62 m
16 km
92 m
80 km
220 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: River Atuwara 5.0 km · Ota 7.0 km · Ijoko 13 km · Alimosho 15 km · Akowonjo 15 km · Ifo 17 km · Agege 18 km · Ikeja 19 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 Iyesi (6.6606°, 3.1798°, elevation 53 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).