Gnépasso weather in September

In September, Gnépasso sees average daytime highs of 29°C and overnight lows near 22°C, with 241 mm of rain across 28.5 wet days and about 12 hours of daylight. It is the 9th-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 12 hours by month's end. Set against the rest of the year, September is Gnépasso's 8th-clearest and 3rd-windiest month. For the whole year in context, see Gnépasso's year-round climate.

Daytime high
29°
9th warmest
Overnight low
22°
8th coldest
Rainfall
241 mm
28.5 wet days
Daylight
12 hours
6:22 AM – 6:23 PM
Cloud cover
84%
8th clearest
Wind
7 km/h
3rd windiest
Solar energy
4.1 kWh/m²
Travel score
3.1
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 Gnépasso reaches about 29°C in the afternoon and slips back to 22°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 about 1°C warmer than August and about 1°C cooler than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72822
82822
92822
102822
112822
122822
132822
142822
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922

How September really feels in Gnépasso

Once humidity and wind are folded in, September averages 7 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
7
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.

Gnépasso weather by month

How September compares with the rest of the year at a glance. September is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 22°9117.411.73.9
Feb31° / 22°13221.511.83.0
Mar31° / 23°19926.8122.6
Apr31° / 23°19326.212.12.7
May30° / 23°26329.412.22.7
Jun28° / 22°24627.212.33.4
Jul28° / 22°14123.412.34.2
Aug28° / 22°12823.912.24.1
Sep29° / 22°24128.5123.1
Oct29° / 22°23930.211.92.8
Nov30° / 22°16727.511.82.9
Dec30° / 22°11122.911.73.6

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 4% of September, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1397
2397
3397
4496
5496
6496
7496
8496
9496
10496
11496
12496
13496
14496
15595
16595
17595
18595
19595
20595
21595
22595
23595
24595
25595
26595
27595
28595
29595
30595

Chance of precipitation in September

Any precipitation

Gnépasso gets around 241 mm of rain over 28.5 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 95% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
192
292
393
493
594
694
794
894
994
1094
1194
1294
1394
1494
1594
1694
1794
1894
1995
2095
2195
2295
2395
2495
2596
2696
2796
2897
2997
3097

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 97% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
1694
2595
3595
4595
5595
6496
7496
8496
9496
10496
11496
12397
13397
14397
15397
16298
17298
18298
19298
20298
21199
22199
23199
24199
25199
26199
27199
28199
29199
30199

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
18calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
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 6:25 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)
112.16:256:31
212.16:256:30
312.16:256:30
412.16:246:29
512.16:246:29
612.16:246:28
712.16:246:28
812.16:246:27
912.16:236:27
1012.16:236:26
1112.16:236:26
1212.06:236:25
1312.06:226:25
1412.06:226:24
1512.06:226:24
1612.06:226:23
1712.06:226:23
1812.06:216:22
1912.06:216:22
2012.06:216:21
2112.06:216:21
2212.06:206:20
2312.06:206:20
2412.06:206:19
2512.06:206:19
2612.06:206:18
2712.06:196:18
2812.06:196:17
2912.06:196:17
3012.06:196:16

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 3.78 kWh/m² to a high of 5.19 kWh/m² in April across the year — September's 4.1 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
34.0Moderate
44.0Moderate
54.0Moderate
64.0Moderate
74.0Moderate
84.0Bright
94.0Bright
104.0Bright
114.0Bright
124.0Bright
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
274.3Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Gnépasso

In seasonPeak

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

Gnépasso 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 Gnépasso?

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

3.1
Sightseeing
6th-best month of the year
3.8
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Gnépasso.

What to pack for Gnépasso in September

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

In September, Gnépasso sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near Gnépasso 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 at the nearest coast (about 45 km away) 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
Jul26Warm
Aug24Warm
Sep24Warm
Oct26Warm
Nov28Warm
Dec28Tropical

UV index in Gnépasso 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 Gnépasso peaks around April 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 15 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highApr 14UV 14Jul 15UV 9
UV index (midday)Level
Jan11Extreme
Feb13Extreme
Mar13Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec9Very high

Air quality in Gnépasso 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 Gnépasso is worst in January — around 47 µg/m³ PM2.5 (poor), about 4.9× the cleanest month (September, 10 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateGoodModerateJan 2146 µg/m³Sep 1410 µg/m³
PM2.5 (µg/m³)Level
Jan47Poor
Feb44Poor
Mar27Moderate
Apr27Moderate
May16Moderate
Jun15Moderate
Jul14Moderate
Aug11Good
Sep10Good
Oct12Good
Nov18Moderate
Dec36Poor
Location & terrain

Where is Gnépasso?

Gnépasso sits at 5.0°N, 7.1°W, 180 m above sea level, in Ivory Coast. The nearest listed city is Dagadji, 32 km away.

Petit GraboDjapadjiGligbeuadjiSan-PédroGabiadji

Topography around Gnépasso

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

Within 3 km, the terrain around Gnépasso has only modest variations in elevation — a maximum elevation change of 200 m around an average of 162 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 406 m; within 80 km, significant variations in elevation — a maximum elevation change of 456 m.

The land around Gnépasso is covered by trees (87%) within 3 km, trees (88%) within 16 km, and trees (80%) within 80 km.

3 km
200 m
16 km
406 m
80 km
456 m
treesshrubsgrasslandwater
September weather nearby: Dagadji 32 km · Watté 32 km · Gagny 36 km · Petit Grabo 43 km · Djapadji 43 km · Gligbeuadji 47 km · San-Pédro 54 km · Gabiadji 55 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 Gnépasso (4.9822°, -7.0602°, elevation 180 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).