Grand-Lahou weather in September

In September, Grand-Lahou sees average daytime highs of 28°C and overnight lows near 24°C, with 132 mm of rain across 24.1 wet days and about 12 hours of daylight. It is the 10th-warmest and 9th-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 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 12 hours by month's end. Set against the rest of the year, September is Grand-Lahou's 8th-clearest and 3rd-windiest month. For the whole year in context, see Grand-Lahou's year-round climate.

Daytime high
28°
10th warmest
Overnight low
24°
3rd coldest
Rainfall
132 mm
24.1 wet days
Daylight
12 hours
6:14 AM – 6:15 PM
Cloud cover
76%
8th clearest
Wind
10 km/h
3rd windiest
Solar energy
4.17 kWh/m²
Travel score
4.1
out of 10

Grand-Lahou is city of côte d'ivoire.

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 Grand-Lahou reaches about 28°C in the afternoon and slips back to 24°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12723
22723
32723
42723
52723
62723
72723
82723
92724
102724
112724
122724
132824
142824
152824
162824
172824
182824
192824
202824
212824
222824
232824
242824
252824
262824
272824
282824
292824
302824

How September really feels in Grand-Lahou

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.

Grand-Lahou weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°931911.74.1
Feb31° / 25°11620.211.83.4
Mar31° / 25°16625.1123.0
Apr31° / 25°18326.212.12.8
May30° / 25°27929.112.22.8
Jun28° / 24°30227.612.33.4
Jul27° / 24°14323.112.34.4
Aug27° / 23°8619.112.24.9
Sep28° / 24°13224.1124.1
Oct29° / 24°18428.611.93.2
Nov30° / 24°18928.611.82.9
Dec30° / 24°13924.711.73.5

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 18% of September, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11585
21585
31585
41585
51684
61684
71783
81783
91783
101882
111981
121981
132080
142080
152080
162179
172179
182179
192179
202179
212179
222179
232179
242179
252179
262278
272278
282377
292377
302377

Chance of precipitation in September

Any precipitation

Grand-Lahou gets around 132 mm of rain over 24.1 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 80% and peaks near 90% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
171
271
372
472
573
673
774
874
975
1076
1176
1277
1378
1479
1579
1680
1781
1882
1982
2083
2184
2285
2386
2486
2587
2688
2788
2889
2989
3090

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 90% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1982
2982
3982
4973
5973
6973
7973
8964
9964
10964
11955
12955
13946
14937
15937
16928
17919
189010
198911
208812
218614
228515
238416
248218
258119
267921
277822
287723
297624
307525

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 6:17 AM to 6:11 AM, and sunset from 6:23 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:176:23
212.16:176:22
312.16:166:22
412.16:166:21
512.16:166:21
612.16:166:20
712.16:166:20
812.16:156:19
912.16:156:19
1012.16:156:18
1112.16:156:18
1212.06:146:17
1312.06:146:17
1412.06:146:16
1512.06:146:16
1612.06:146:15
1712.06:136:15
1812.06:136:14
1912.06:136:14
2012.06:136:13
2112.06:126:13
2212.06:126:12
2312.06:126:12
2412.06:126:11
2512.06:126:11
2612.06:116:10
2712.06:116:10
2812.06:116:09
2912.06:116:09
3012.06:116:08

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.17 kWh/m².

For context, solar energy here swings from a low near 3.73 kWh/m² to a high of 5.24 kWh/m² in April across the year — September's 4.17 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.0Bright
24.0Bright
34.0Bright
44.0Bright
54.1Bright
64.1Bright
74.1Bright
84.1Bright
94.1Bright
104.1Bright
114.1Bright
124.1Bright
134.2Bright
144.2Bright
154.2Bright
164.2Bright
174.2Bright
184.2Bright
194.2Bright
204.2Bright
214.2Bright
224.2Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Grand-Lahou

In seasonPeak

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

Grand-Lahou sees seasonal dust haze (February), heaviest in February.

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

Is September a good time to visit Grand-Lahou?

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

4.1
Sightseeing
3rd-best month of the year
4.3
Beach & pool
6th-best month of the year

September is a reasonable time to visit Grand-Lahou for sightseeing.

What to pack for Grand-Lahou in September

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

In September, Grand-Lahou sees daytime highs around 28°C and nights near 24°C. Pack light clothes and rain gear. About 24 days see rain.

light clothesrain gear

Sea temperature near Grand-Lahou in September

The nearest coast averages about 24°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 28°C and coldest in August near 24°C.

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

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar28Warm
Apr28Tropical
May28Tropical
Jun27Warm
Jul25Warm
Aug24Refreshing
Sep24Warm
Oct26Warm
Nov28Tropical
Dec28Tropical

UV index in Grand-Lahou in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Grand-Lahou peaks around March 24 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 16 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 24UV 14Jul 16UV 8
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul8Very high
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Grand-Lahou 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 Grand-Lahou is worst in January — around 50 µg/m³ PM2.5 (poor), about 5.8× the cleanest month (September, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModerateJan 1849 µg/m³Sep 189 µg/m³
PM2.5 (µg/m³)Level
Jan50Poor
Feb43Poor
Mar25Moderate
Apr24Moderate
May15Moderate
Jun14Moderate
Jul14Moderate
Aug11Good
Sep9Good
Oct10Good
Nov16Moderate
Dec37Poor
Location & terrain

Where is Grand-Lahou?

Grand-Lahou sits at 5.1°N, 5.0°W, 72 m above sea level, in Ivory Coast. The nearest listed city is Ahouanou, 45 km away.

AhouanouGbabamDabouOkromodouGbolouvilleNdouciOgoudouDivo

Topography around Grand-Lahou

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

Within 3 km, the terrain around Grand-Lahou has only modest variations in elevation — a maximum elevation change of 20 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 92 m; within 80 km, significant variations in elevation — a maximum elevation change of 289 m.

The land around Grand-Lahou is covered by water (61%) and trees (22%) within 3 km, water (57%) and trees (34%) within 16 km, and trees (59%) and water (37%) within 80 km.

3 km
20 m
16 km
92 m
80 km
289 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Ahouanou 45 km · Gbabam 72 km · Dabou 74 km · Okromodou 76 km · Gbolouville 83 km · Ndouci 86 km · Ogoudou 86 km · Divo 86 km

Ivory Coast travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 37% of US
price level, 2025
GDP per capita
$3,050
2025
Happiness
5.1 / 10
World Happiness, 2025
Safe drinking water
36%
of population, 2024
Road deaths
24.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Very low
EF EPI 393

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 Grand-Lahou (5.1383°, -5.0212°, elevation 72 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).