Lagos weather in September

In September, Lagos sees average daytime highs of 27°C and overnight lows near 24°C, with 192 mm of rain across 25.4 wet days and about 12 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 1% 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 Lagos's 10th-clearest and 6th-windiest month. For the whole year in context, see Lagos's year-round climate.

Daytime high
27°
10th warmest
Overnight low
24°
3rd coldest
Rainfall
192 mm
25.4 wet days
Daylight
12 hours
6:40 AM – 6:42 PM
Cloud cover
82%
10th clearest
Wind
12 km/h
6th windiest
Solar energy
4.19 kWh/m²
Travel score
3.9
out of 10

Lagos is largest city and former capital of Nigeria.

Air quality
High
PM2.5 27.4 µg/m³ · 2010
Density
13,138/km²
people per km²
Founded
1472

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 27°C through the month.

A typical September day in Lagos reaches about 27°C in the afternoon and slips back to 24°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 28°C. Set against its neighbours, September runs on par with August and about 1°C cooler than October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12724
22724
32724
42724
52724
62724
72724
82724
92724
102724
112724
122724
132724
142724
152724
162724
172724
182724
192724
202724
212724
222724
232724
242724
252724
262724
272724
282724
292824
302824

How September really feels in Lagos

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Lagos weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 25°31911.75.4
Feb30° / 26°4411.911.84.5
Mar30° / 27°9120.1123.7
Apr30° / 26°13121.712.13.5
May29° / 26°21727.212.33.1
Jun28° / 25°29328.112.43.4
Jul27° / 24°2142512.34.1
Aug26° / 24°1402012.24.8
Sep27° / 24°19225.4123.9
Oct28° / 25°17626.711.93.6
Nov29° / 26°7919.411.74.2
Dec30° / 25°3310.911.65.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 10% of September, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11288
21288
31288
41189
51189
61189
71189
81189
91189
101189
111090
121090
131090
141090
151090
161189
171189
181189
191189
201189
211288
221189
231189
241189
251189
261288
271288
281288
291288
301486

Chance of precipitation in September

Any precipitation

Lagos gets around 192 mm of rain over 25.4 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 84% and peaks near 89% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
179
280
381
481
582
682
783
883
983
1084
1184
1284
1384
1484
1584
1684
1785
1885
1985
2085
2185
2286
2386
2486
2587
2687
2787
2888
2988
3089

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
11000
21000
31000
4991
5991
6991
7991
8991
9991
10991
11982
12982
13982
14973
15973
16964
17955
18955
19946
20937
21928
22919
239010
248911
258812
268713
278614
288416
298317
308218

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812calm
1912calm
2012calm
2112calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

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 6:42 AM to 6:37 AM, and sunset from 6:50 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:426:50
212.16:426:49
312.16:426:49
412.16:426:48
512.16:426:48
612.16:426:47
712.16:416:47
812.16:416:46
912.16:416:46
1012.16:416:45
1112.16:416:45
1212.16:406:44
1312.16:406:43
1412.06:406:43
1512.06:406:42
1612.06:406:42
1712.06:406:41
1812.06:396:41
1912.06:396:40
2012.06:396:40
2112.06:396:39
2212.06:396:38
2312.06:386:38
2412.06:386:37
2512.06:386:37
2612.06:386:36
2712.06:386:36
2812.06:386:35
2912.06:376:35
3011.96:376:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.19 kWh/m².

For context, solar energy here swings from a low near 3.94 kWh/m² to a high of 5.38 kWh/m² in February across the year — September's 4.19 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Lagos

In seasonPeak

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

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

Lagos 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 Lagos?

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

3.9
Sightseeing
7th-best month of the year
4.0
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Lagos.

What to pack for Lagos in September

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

In September, Lagos sees daytime highs around 27°C and nights near 24°C. Pack light clothes and rain gear. About 25 days see rain.

light clothesrain gear

Sea temperature near Lagos 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 offshore 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
Jun28Tropical
Jul26Warm
Aug25Warm
Sep26Warm
Oct28Warm
Nov29Tropical
Dec29Tropical

UV index in Lagos 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 Lagos peaks around March 24 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highExtremeExtremeVery highMar 24UV 12Dec 21UV 8
UV index (midday)Level
Jan8Very high
Feb9Very high
Mar12Extreme
Apr12Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Lagos 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 Lagos is worst in January — around 50 µg/m³ PM2.5 (poor), about 3.4× the cleanest month (August, 15 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Lagos's WHO annual average of 27.4 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorJan 1550 µg/m³Aug 1115 µg/m³
PM2.5 (µg/m³)Level
Jan50Poor
Feb44Poor
Mar27Moderate
Apr23Moderate
May20Moderate
Jun18Moderate
Jul15Moderate
Aug15Moderate
Sep18Moderate
Oct24Moderate
Nov28Moderate
Dec46Poor
Location & terrain

Where is Lagos?

Lagos sits at 6.5°N, 3.4°E, 11 m above sea level, in Nigeria. The nearest listed city is Obalende, 2.0 km away.

Topography around Lagos

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

Within 3 km, the terrain around Lagos has only modest variations in elevation — a maximum elevation change of 18 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 43 m; within 80 km, only modest variations in elevation — a maximum elevation change of 212 m.

The land around Lagos is covered by artificial surfaces (51%) and water (42%) within 3 km, water (53%) and artificial surfaces (35%) within 16 km, and trees (40%) and water (36%) within 80 km.

3 km
18 m
16 km
43 m
80 km
212 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Obalende 2.0 km · Makoko 5.0 km · Surulere 7.0 km · Aliayabiagba 7.0 km · Ajegunle 7.0 km · Lekki 9.0 km · Mushin 9.0 km · Shomolu 10 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 Lagos (6.4541°, 3.3947°, elevation 11 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).