Kolaboui weather in September

In September, Kolaboui sees average daytime highs of 29°C and overnight lows near 24°C, with 405 mm of rain across 29.3 wet days and about 12.1 hours of daylight. It is the 10th-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 12 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Kolaboui's 10th-clearest and 9th-windiest month. For the whole year in context, see Kolaboui's year-round climate.

Daytime high
29°
10th warmest
Overnight low
24°
8th coldest
Rainfall
405 mm
29.3 wet days
Daylight
12 h 06 min
6:50 AM – 6:54 PM
Cloud cover
85%
10th clearest
Wind
7 km/h
9th windiest
Solar energy
4.28 kWh/m²
Travel score
2.8
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 Kolaboui reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°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)
12824
22824
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
233024
243024
253024
263024
273024
283024
293024
303024

How September really feels in Kolaboui

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.

Kolaboui weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 21°00.111.44.6
Feb34° / 22°0011.64.0
Mar34° / 23°00.111.93.9
Apr33° / 24°10.212.24.3
May32° / 25°355.912.54.2
Jun30° / 25°20323.912.63.2
Jul29° / 24°49730.412.62.9
Aug28° / 24°59330.812.43.0
Sep29° / 24°40529.312.12.8
Oct30° / 24°22828.611.82.8
Nov31° / 24°6112.611.54.2
Dec32° / 22°40.911.45.1

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 7% of September, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1496
2496
3496
4496
5496
6496
7496
8496
9496
10595
11595
12595
13595
14595
15595
16694
17694
18694
19793
20793
21892
22991
231090
241090
251090
261189
271189
281288
291288
301486

Chance of precipitation in September

Any precipitation

Kolaboui gets around 405 mm of rain over 29.3 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 98% and peaks near 99% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
199
299
399
499
599
699
798
898
998
1098
1198
1298
1398
1497
1597
1697
1797
1897
1997
2097
2197
2297
2397
2497
2597
2697
2797
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 65% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
17624
27624
37624
47525
57525
67525
77426
87327
97327
107228
117129
127030
136931
146733
156634
166535
176436
186238
196139
206040
215941
225842
235743
245644
255545
265446
275347
285248
295149
305050

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.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 12 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 18 minutes over September. Sunrise moves from 6:51 AM to 6:49 AM, and sunset from 7:04 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:517:04
212.26:517:03
312.26:517:02
412.26:517:02
512.26:517:01
612.26:517:00
712.26:517:00
812.16:516:59
912.16:516:58
1012.16:516:58
1112.16:506:57
1212.16:506:56
1312.16:506:56
1412.16:506:55
1512.16:506:54
1612.16:506:54
1712.06:506:53
1812.06:506:52
1912.06:506:52
2012.06:506:51
2112.06:506:50
2212.06:506:50
2312.06:506:49
2412.06:506:48
2512.06:506:48
2612.06:506:47
2711.96:506:46
2811.96:506:46
2911.96:496:45
3011.96:496:44

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.28 kWh/m².

For context, solar energy here swings from a low near 3.78 kWh/m² to a high of 6.83 kWh/m² in April across the year — September's 4.28 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
13.9Moderate
24.0Moderate
34.0Moderate
44.0Moderate
54.0Bright
64.0Bright
74.0Bright
84.1Bright
94.1Bright
104.1Bright
114.2Bright
124.2Bright
134.2Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.4Bright
194.4Bright
204.4Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Kolaboui

In seasonPeak

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

Kolaboui's monsoon runs July–September, when most of the year's rain falls.

Kolaboui sees seasonal dust haze (February–June), heaviest in March.

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

Is September a good time to visit Kolaboui?

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

2.8
Sightseeing
11th-best month of the year
3.6
Beach & pool
10th-best month of the year

September is a weaker month for outdoor sightseeing in Kolaboui.

What to pack for Kolaboui in September

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

In September, Kolaboui sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near Kolaboui in September

The nearest coast averages about 28°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 31 km away) is warmest in November at about 29°C and coldest in February near 27°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan27Warm
Feb27Warm
Mar27Warm
Apr27Warm
May28Warm
Jun28Tropical
Jul28Warm
Aug27Warm
Sep28Warm
Oct28Tropical
Nov29Tropical
Dec28Tropical

UV index in Kolaboui 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 Kolaboui peaks around August 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 highAug 18UV 13Dec 18UV 8
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr11Extreme
May11Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Kolaboui 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 Kolaboui is worst in May — around 95 µg/m³ PM2.5 (unhealthy), about 7.9× the cleanest month (August, 12 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModeratePoorMay 1589 µg/m³Aug 1812 µg/m³
PM2.5 (µg/m³)Level
Jan60Unhealthy
Feb78Unhealthy
Mar63Unhealthy
Apr53Poor
May95Unhealthy
Jun30Moderate
Jul15Moderate
Aug12Good
Sep14Moderate
Oct27Moderate
Nov35Moderate
Dec55Unhealthy
Location & terrain

Where is Kolaboui?

Kolaboui sits at 10.8°N, 14.4°W, 47 m above sea level, in Guinea. The nearest listed city is Boké, 19 km away.

SangarédiWendou BorouFriaXitoleDubrékaKoumbia

Topography around Kolaboui

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

Within 3 km, the terrain around Kolaboui has only modest variations in elevation — a maximum elevation change of 35 m around an average of 28 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 207 m; within 80 km, significant variations in elevation — a maximum elevation change of 509 m.

The land around Kolaboui is covered by trees (76%) within 3 km, trees (53%) and shrubs (23%) within 16 km, and trees (43%) and water (22%) within 80 km.

3 km
35 m
16 km
207 m
80 km
509 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
September weather nearby: Boké 19 km · Kamsar 29 km · Sangarédi 77 km · Wendou Borou 91 km · Fria 101 km · Xitole 114 km · Dubréka 147 km · Koumbia 149 km

Guinea travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / K
220 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$1,877
2025
Happiness
4.6 / 10
World Happiness, 2025
Road deaths
29.7
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Muslim 85%Christian 13%none 1%animist 0%

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 Kolaboui (10.7957°, -14.3997°, elevation 47 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).