Boké weather in September

In September, Boké sees average daytime highs of 30°C and overnight lows near 23°C, with 414 mm of rain across 28.9 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 31°C by the end. 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 Boké's 10th-clearest and 9th-windiest month. For the whole year in context, see Boké's year-round climate.

Daytime high
30°
10th warmest
Overnight low
23°
7th coldest
Rainfall
414 mm
28.9 wet days
Daylight
12 h 06 min
6:50 AM – 6:53 PM
Cloud cover
86%
10th clearest
Wind
6 km/h
9th windiest
Solar energy
4.17 kWh/m²
Travel score
2.7
out of 10

Boké is city in Guinea.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 29°C in the first days to 31°C by the end.

A typical September day in Boké reaches about 30°C in the afternoon and slips back to 23°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 32°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)
12923
22923
32923
42923
52923
62923
72923
82923
92923
102923
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263123
273123
283123
293123
303123

How September really feels in Boké

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.

Boké 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
Jan34° / 20°00.111.43.7
Feb36° / 21°00.111.62.6
Mar37° / 22°10.211.92.0
Apr37° / 23°20.412.22.1
May35° / 24°437.612.52.7
Jun31° / 24°21223.812.62.9
Jul29° / 23°4453012.62.8
Aug29° / 23°54930.512.42.9
Sep30° / 23°41428.912.12.7
Oct31° / 23°24827.511.82.6
Nov32° / 22°6110.511.54.0
Dec33° / 20°30.611.44.5

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 6% of September, with mostly cloudy or overcast conditions the remaining 94%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1397
2397
3397
4397
5397
6397
7397
8397
9397
10496
11496
12496
13496
14595
15595
16595
17694
18694
19694
20793
21793
22892
23892
24991
251090
261189
271189
281189
291288
301288

Chance of precipitation in September

Any precipitation

Boké gets around 414 mm of rain over 28.9 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 96% and peaks near 98% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
198
298
398
498
598
697
797
897
997
1097
1196
1296
1396
1496
1596
1696
1796
1896
1996
2096
2196
2296
2396
2495
2595
2695
2795
2895
2995
3094

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 91% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
1955
2955
3955
4955
5946
6946
7946
8946
9937
10937
11937
12937
13928
14928
15928
16919
17919
18919
19919
20919
219010
229010
239010
248911
258911
268812
278713
288713
298614
308515

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
275calm
285calm
295calm
305calm

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 6:50 AM to 6:49 AM, and sunset from 7:03 PM to 6:44 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:507:03
212.26:507:03
312.26:507:02
412.26:507:01
512.26:507:01
612.26:507:00
712.26:506:59
812.16:506:59
912.16:506:58
1012.16:506:57
1112.16:506:57
1212.16:506:56
1312.16:506:55
1412.16:506:55
1512.16:506:54
1612.16:506:53
1712.06:506:53
1812.06:506:52
1912.06:506:51
2012.06:496:51
2112.06:496:50
2212.06:496:49
2312.06:496:49
2412.06:496:48
2512.06:496:47
2612.06:496:47
2711.96:496:46
2811.96:496:45
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 4.17 kWh/m².

For context, solar energy here swings from a low near 3.62 kWh/m² to a high of 6.84 kWh/m² in April across the year — September's 4.17 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.9Moderate
63.9Moderate
73.9Moderate
83.9Moderate
94.0Moderate
104.0Bright
114.0Bright
124.1Bright
134.1Bright
144.1Bright
154.2Bright
164.2Bright
174.2Bright
184.3Bright
194.3Bright
204.3Bright
214.4Bright
224.4Bright
234.4Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Boké

In seasonPeak

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

Boké's monsoon runs July–October, when most of the year's rain falls.

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

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

Is September a good time to visit Boké?

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

2.7
Sightseeing
7th-best month of the year
3.6
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Boké.

What to pack for Boké in September

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

In September, Boké sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 29 days see rain.

light clothesrain gear

Sea temperature near Boké 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 50 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 Boké 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 Boké 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 Boké 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 Boké is worst in May — around 109 µg/m³ PM2.5 (unhealthy), about 8.9× the cleanest month (August, 12 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModeratePoorMay 15102 µg/m³Aug 1813 µg/m³
PM2.5 (µg/m³)Level
Jan50Poor
Feb69Unhealthy
Mar57Unhealthy
Apr60Unhealthy
May109Unhealthy
Jun32Moderate
Jul15Moderate
Aug12Moderate
Sep14Moderate
Oct29Moderate
Nov36Poor
Dec50Poor
Location & terrain

Where is Boké?

Boké sits at 10.9°N, 14.3°W, 49 m above sea level, in Guinea. The nearest listed city is Kolaboui, 19 km away.

KamsarSangarédiWendou BorouFriaXitoleKoumbiaTélimélé

Topography around Boké

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

Within 3 km, the terrain around Boké has only modest variations in elevation — a maximum elevation change of 184 m around an average of 58 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 359 m; within 80 km, significant variations in elevation — a maximum elevation change of 509 m.

The land around Boké is covered by trees (56%) and artificial surfaces (20%) within 3 km, trees (55%) and shrubs (28%) within 16 km, and trees (51%) within 80 km.

3 km
184 m
16 km
359 m
80 km
509 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwatermangroves
September weather nearby: Kolaboui 19 km · Kamsar 47 km · Sangarédi 60 km · Wendou Borou 71 km · Fria 100 km · Xitole 106 km · Koumbia 129 km · Télimélé 137 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 Boké (10.9322°, -14.2905°, elevation 49 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).