Atani weather in September

In September, Atani sees average daytime highs of 29°C and overnight lows near 23°C, with 212 mm of rain across 27.8 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 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Atani's 12th-clearest and 8th-windiest month. For the whole year in context, see Atani's year-round climate.

Daytime high
29°
10th warmest
Overnight low
23°
5th coldest
Rainfall
212 mm
27.8 wet days
Daylight
12 hours
6:26 AM – 6:28 PM
Cloud cover
86%
12th clearest
Wind
6 km/h
8th windiest
Solar energy
3.85 kWh/m²
Travel score
2.9
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 Atani 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 31°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)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
112923
122923
132923
142923
152923
162923
172923
182923
192923
202923
212923
223023
233023
243023
253023
263023
273023
283023
293023
303023

How September really feels in Atani

Once humidity and wind are folded in, September averages 30 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
30
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.

Atani 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° / 23°82.111.73.3
Feb35° / 24°194.511.82.6
Mar34° / 25°6712.8122.5
Apr33° / 24°1301912.12.6
May31° / 24°17425.212.32.7
Jun30° / 23°20926.712.32.9
Jul29° / 23°19726.612.33.3
Aug29° / 23°18824.212.23.5
Sep29° / 23°21227.8122.9
Oct30° / 23°18426.311.93.0
Nov32° / 23°478.511.74.1
Dec33° / 23°71.611.74.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in September, the cloudiest month of the year.

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 (%)
1397
2397
3397
4397
5397
6397
7397
8397
9397
10397
11496
12496
13496
14496
15496
16595
17595
18595
19595
20595
21694
22694
23694
24793
25793
26892
27892
28892
29892
30892

Chance of precipitation in September

Any precipitation

Atani gets around 212 mm of rain over 27.8 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 92% and peaks near 93% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
189
290
390
491
591
691
792
892
992
1092
1192
1293
1393
1493
1593
1693
1793
1893
1993
2093
2193
2293
2393
2493
2593
2693
2793
2893
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 98% 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
5991
6991
7991
8991
9991
10991
11991
12991
13982
14982
15982
16982
17982
18982
19982
20973
21973
22973
23973
24964
25964
26964
27955
28955
29946
30946

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 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over September. Sunrise moves from 6:29 AM to 6:24 AM, and sunset from 6:36 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:296:36
212.16:296:36
312.16:296:35
412.16:296:35
512.16:296:34
612.16:286:34
712.16:286:33
812.16:286:33
912.16:286:32
1012.16:286:32
1112.16:276:31
1212.16:276:30
1312.06:276:30
1412.06:276:29
1512.06:276:29
1612.06:266:28
1712.06:266:28
1812.06:266:27
1912.06:266:27
2012.06:266:26
2112.06:256:26
2212.06:256:25
2312.06:256:25
2412.06:256:24
2512.06:256:23
2612.06:246:23
2712.06:246:22
2812.06:246:22
2912.06:246:21
3012.06:246:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.85 kWh/m².

For context, solar energy here swings from a low near 3.67 kWh/m² to a high of 5.44 kWh/m² in January across the year — September's 3.85 kWh/m² sits near the bottom.

01234151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
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
193.9Moderate
203.9Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.9Moderate
283.9Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Atani

In seasonPeak

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

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

Atani sees seasonal dust haze (December–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 Atani?

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

2.9
Sightseeing
7th-best month of the year
3.9
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Atani.

What to pack for Atani in September

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

In September, Atani sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

UV index in Atani 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 Atani peaks around September 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 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 highExtremeVery highSep 22UV 12Jan 10UV 8
UV index (midday)Level
Jan8Very high
Feb10Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun11Extreme
Jul10Extreme
Aug9Very high
Sep12Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Atani 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 Atani is worst in January — around 201 µg/m³ PM2.5 (very unhealthy), about 3.5× the cleanest month (August, 58 µg/m³).

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

0306090120150180210JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyVery unhealthyJan 11201 µg/m³Aug 1058 µg/m³
PM2.5 (µg/m³)Level
Jan201Very unhealthy
Feb171Very unhealthy
Mar100Unhealthy
Apr98Unhealthy
May83Unhealthy
Jun73Unhealthy
Jul59Unhealthy
Aug58Unhealthy
Sep70Unhealthy
Oct92Unhealthy
Nov108Unhealthy
Dec197Very unhealthy
Location & terrain

Where is Atani?

Atani sits at 6.0°N, 6.7°E, 25 m above sea level, in Nigeria. The nearest listed city is Ozubulu, 13 km away.

Topography around Atani

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

Within 3 km, the terrain around Atani has only modest variations in elevation — a maximum elevation change of 15 m around an average of 19 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 163 m; within 80 km, significant variations in elevation — a maximum elevation change of 474 m.

The land around Atani is covered by trees (41%) and cropland (25%) within 3 km, trees (62%) within 16 km, and trees (67%) and grassland (21%) within 80 km.

3 km
15 m
16 km
163 m
80 km
474 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Ozubulu 13 km · Onitsha 16 km · Nkpor 18 km · Nnewi 19 km · Asaba 21 km · Ihiala 21 km · Igbo-Ukwu 30 km · Ogwashi-Uku 31 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 Atani (6.0128°, 6.7477°, elevation 25 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).