Effium weather in September

In September, Effium sees average daytime highs of 30°C and overnight lows near 23°C, with 241 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 30°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 Effium's 10th-clearest and 11th-windiest month. For the whole year in context, see Effium's year-round climate.

Daytime high
30°
10th warmest
Overnight low
23°
5th coldest
Rainfall
241 mm
26.8 wet days
Daylight
12 hours
6:21 AM – 6:23 PM
Cloud cover
85%
10th clearest
Wind
6 km/h
11th windiest
Solar energy
4.1 kWh/m²
Travel score
2.8
out of 10

Effium is town in Ebonyi 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 30°C through the month.

A typical September day in Effium reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°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)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233123
243123
253123
263123
273123
283123
293123
303123

How September really feels in Effium

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.

Effium 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
Jan35° / 23°3111.72.8
Feb37° / 24°102.211.82.1
Mar36° / 26°315.9122.1
Apr34° / 25°9012.412.12.5
May33° / 24°15320.812.32.6
Jun31° / 24°21123.812.42.9
Jul30° / 23°21126.612.33.1
Aug30° / 23°23026.112.23.1
Sep30° / 23°24126.8122.8
Oct31° / 23°16923.511.92.9
Nov33° / 23°285.411.73.7
Dec35° / 22°30.611.63.5

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 (%)
1397
2397
3496
4496
5496
6496
7496
8496
9496
10595
11595
12595
13595
14595
15694
16694
17694
18694
19694
20793
21793
22793
23793
24793
25793
26793
27793
28793
29793
30793

Chance of precipitation in September

Any precipitation

Effium gets around 241 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 90% and peaks near 93% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
193
293
393
493
593
693
792
892
992
1091
1191
1291
1390
1490
1590
1689
1789
1889
1989
2088
2188
2288
2387
2487
2587
2686
2786
2886
2986
3086

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

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
11990
21990
301000
401000
501000
601000
701000
801000
901000
1001000
1101000
1201000
1301000
1401000
1501000
1601000
1701000
1801000
1901000
2001000
2101000
2201000
2301000
2401000
2501000
260991
270991
280991
290991
300991

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
66calm
76calm
86calm
96calm
106calm
116calm
126calm
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 6:24 AM to 6:19 AM, and sunset from 6:31 PM to 6:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:246:31
212.16:236:31
312.16:236:30
412.16:236:30
512.16:236:29
612.16:236:29
712.16:236:28
812.16:226:28
912.16:226:27
1012.16:226:27
1112.16:226:26
1212.16:226:25
1312.16:226:25
1412.06:216:24
1512.06:216:24
1612.06:216:23
1712.06:216:23
1812.06:216:22
1912.06:206:21
2012.06:206:21
2112.06:206:20
2212.06:206:20
2312.06:206:19
2412.06:206:19
2512.06:196:18
2612.06:196:18
2712.06:196:17
2812.06:196:17
2912.06:196:16
3011.96:196:16

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.1 kWh/m².

For context, solar energy here swings from a low near 3.91 kWh/m² to a high of 5.95 kWh/m² in February across the year — September's 4.1 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Moderate
44.0Bright
54.0Bright
64.0Bright
74.0Bright
84.0Bright
94.0Bright
104.1Bright
114.1Bright
124.1Bright
134.1Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.2Bright
214.2Bright
224.2Bright
234.2Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.1Bright
Planning a trip in September

Hazard calendar for Effium

In seasonPeak

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

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

Effium sees seasonal dust haze (December–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 Effium?

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

2.8
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 Effium.

What to pack for Effium in September

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

In September, Effium sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

UV index in Effium 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 Effium 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
Apr11Extreme
May10Extreme
Jun11Extreme
Jul10Extreme
Aug10Very high
Sep12Extreme
Oct11Extreme
Nov10Very high
Dec8Very high

Air quality in Effium 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 Effium is worst in January — around 159 µg/m³ PM2.5 (very unhealthy), about 4.0× the cleanest month (July, 40 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyJan 16156 µg/m³Jul 1641 µg/m³
PM2.5 (µg/m³)Level
Jan159Very unhealthy
Feb133Unhealthy
Mar80Unhealthy
Apr64Unhealthy
May45Poor
Jun43Poor
Jul40Poor
Aug43Poor
Sep45Poor
Oct56Unhealthy
Nov77Unhealthy
Dec137Unhealthy
Location & terrain

Where is Effium?

Effium sits at 6.6°N, 8.1°E, 115 m above sea level, in Nigeria. The nearest listed city is Ezza-Ohu, 21 km away.

Enugu-EzikeNsukka

Topography around Effium

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

Within 3 km, the terrain around Effium has only modest variations in elevation — a maximum elevation change of 71 m around an average of 112 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 126 m; within 80 km, significant variations in elevation — a maximum elevation change of 569 m.

The land around Effium is covered by trees (58%) within 3 km, cropland (42%) and trees (39%) within 16 km, and trees (49%) and cropland (20%) within 80 km.

3 km
71 m
16 km
126 m
80 km
569 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Ezza-Ohu 21 km · Isieke 28 km · Eha Amufu 33 km · Abakaliki 35 km · Enugu 65 km · Otukpa 68 km · Enugu-Ezike 77 km · Nsukka 77 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 Effium (6.6311°, 8.0581°, elevation 115 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).