Guéyo weather in September

In September, Guéyo sees average daytime highs of 29°C and overnight lows near 22°C, with 163 mm of rain across 26.2 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 Guéyo's 8th-clearest and 3rd-windiest month. For the whole year in context, see Guéyo's year-round climate.

Daytime high
29°
9th warmest
Overnight low
22°
5th coldest
Rainfall
163 mm
26.2 wet days
Daylight
12 hours
6:18 AM – 6:20 PM
Cloud cover
81%
8th clearest
Wind
7 km/h
3rd windiest
Solar energy
4.03 kWh/m²
Travel score
3.3
out of 10

Guéyo is place in Bas-Sassandra, Ivory Coast.

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 29°C through the month.

A typical September day in Guéyo reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°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
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922

How September really feels in Guéyo

Once humidity and wind are folded in, September averages 13 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
13
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.

Guéyo 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°389.111.74.4
Feb32° / 23°6413.611.83.3
Mar32° / 23°10921.2122.8
Apr32° / 23°11321.912.12.9
May30° / 23°15925.812.33.0
Jun29° / 22°17225.712.33.4
Jul28° / 22°10920.512.34.4
Aug28° / 22°10320.712.24.4
Sep29° / 22°16326.2123.3
Oct30° / 22°16427.711.93.1
Nov30° / 22°10922.311.73.5
Dec30° / 22°4812.211.74.7

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 9% of September, with mostly cloudy or overcast conditions the remaining 90%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1595
2694
3694
4694
5793
6793
7793
8793
9892
10892
11892
12892
13991
14991
15991
161090
171090
181090
191189
201189
211288
221288
231387
241387
251387
261387
271288
281288
291288
301387

Chance of precipitation in September

Any precipitation

Guéyo gets around 163 mm of rain over 26.2 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 87% and peaks near 93% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
180
280
381
481
582
682
782
883
983
1084
1185
1285
1386
1487
1587
1688
1789
1889
1990
2090
2191
2291
2391
2492
2592
2692
2792
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 93% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)
11288
21288
31288
41189
51189
61189
71090
81090
91090
10991
11991
12892
13892
14892
15793
16793
17694
18694
19694
20595
21595
22595
23496
24496
25397
26397
27397
28298
29298
30298

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
28calm
38calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
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 6:21 AM to 6:15 AM, and sunset from 6:27 PM to 6:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:216:27
212.16:216:27
312.16:206:26
412.16:206:26
512.16:206:25
612.16:206:25
712.16:206:24
812.16:196:24
912.16:196:23
1012.16:196:23
1112.16:196:22
1212.16:196:22
1312.06:186:21
1412.06:186:21
1512.06:186:20
1612.06:186:20
1712.06:176:19
1812.06:176:18
1912.06:176:18
2012.06:176:17
2112.06:176:17
2212.06:166:16
2312.06:166:16
2412.06:166:15
2512.06:166:15
2612.06:166:14
2712.06:156:14
2812.06:156:13
2912.06:156:13
3012.06:156:12

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.03 kWh/m².

For context, solar energy here swings from a low near 3.6 kWh/m² to a high of 5.14 kWh/m² in April across the year — September's 4.03 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.9Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
93.9Moderate
104.0Moderate
114.0Moderate
124.0Moderate
134.0Bright
144.0Bright
154.0Bright
164.0Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.2Bright
254.2Bright
264.2Bright
274.2Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for Guéyo

In seasonPeak

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

Guéyo 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 Guéyo?

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

3.3
Sightseeing
7th-best month of the year
4.1
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Guéyo.

What to pack for Guéyo in September

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

In September, Guéyo sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. About 26 days see rain.

light clothesrain gear

UV index in Guéyo 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 Guéyo peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 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 12UV 14Dec 15UV 9
UV index (midday)Level
Jan10Extreme
Feb12Extreme
Mar13Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul9Very high
Aug11Extreme
Sep13Extreme
Oct12Extreme
Nov10Very high
Dec8Very high

Air quality in Guéyo 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 Guéyo is worst in January — around 53 µg/m³ PM2.5 (poor), about 4.5× the cleanest month (September, 12 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateModeratePoorJan 2052 µg/m³Sep 1212 µg/m³
PM2.5 (µg/m³)Level
Jan53Poor
Feb49Poor
Mar30Moderate
Apr29Moderate
May18Moderate
Jun16Moderate
Jul16Moderate
Aug13Moderate
Sep12Good
Oct15Moderate
Nov22Moderate
Dec44Poor
Location & terrain

Where is Guéyo?

Guéyo sits at 5.7°N, 6.1°W, 188 m above sea level, in Ivory Coast. The nearest listed city is Dagbao I, 15 km away.

GalébréLakotaGagnoa

Topography around Guéyo

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

Within 3 km, the terrain around Guéyo has only modest variations in elevation — a maximum elevation change of 75 m around an average of 166 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 335 m; within 80 km, significant variations in elevation — a maximum elevation change of 523 m.

The land around Guéyo is covered by trees (70%) within 3 km, trees (86%) within 16 km, and trees (91%) within 80 km.

3 km
75 m
16 km
335 m
80 km
523 m
treesshrubsgrasslandartificial surfaceswater
September weather nearby: Dagbao I 15 km · Gnatroa 27 km · Niapidou 38 km · Okrouyo 38 km · Mabéhiri 38 km · Galébré 43 km · Lakota 47 km · Gagnoa 51 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 Guéyo (5.6882°, -6.0712°, elevation 188 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).