Koumbia weather in December

In December, Koumbia sees average daytime highs of 33°C and overnight lows near 19°C, with 2 mm of rain across 0.3 wet days and about 11.3 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 52% of the time in December, and the air most often feels dry.

Daylight stretches from about 11 h 24 min at the start of December to 11 h 18 min by month's end. Set against the rest of the year, December is Koumbia's 5th-clearest and 9th-windiest month. For the whole year in context, see Koumbia's year-round climate.

Daytime high
33°
6th warmest
Overnight low
19°
2nd coldest
Rainfall
2 mm
0.3 wet days
Daylight
11 h 18 min
7:11 AM – 6:29 PM
Cloud cover
42%
5th clearest
Wind
7 km/h
9th windiest
Solar energy
5.35 kWh/m²
Travel score
4.4
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 33°C through the month.

A typical December day in Koumbia reaches about 33°C in the afternoon and slips back to 19°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 31°C and 35°C. Set against its neighbours, December runs about 1°C warmer than November and on par with January.

15°20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13320
23320
33320
43320
53320
63320
73320
83319
93319
103319
113319
123319
133319
143319
153319
163319
173319
183319
193319
203319
213319
223319
233319
243319
253319
263319
273319
283319
293319
303319
313319

How December really feels in Koumbia

Once humidity and wind are folded in, December averages 31 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
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Koumbia weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan34° / 19°10.311.44.1
Feb36° / 21°10.111.62.9
Mar37° / 23°10.111.91.9
Apr38° / 25°20.712.31.5
May36° / 25°356.812.52.0
Jun32° / 24°1301712.73.0
Jul30° / 23°28926.712.63.0
Aug30° / 23°37428.312.42.9
Sep31° / 23°29726.812.12.7
Oct32° / 23°17820.611.73.1
Nov32° / 21°264.211.54.4
Dec33° / 19°20.311.34.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 34%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16634
26634
36535
46535
56535
66436
76436
86436
96436
106337
116436
126436
136436
146436
156436
166535
176535
186535
196733
206733
216832
226832
236832
246931
256931
266931
276931
286931
296832
306832
316832

Chance of precipitation in December

Any precipitation

Koumbia gets around 2 mm of rain over 0.3 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 4% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
14
24
33
43
53
63
72
82
92
101
111
121
131
141
150
160
170
180
190
200
210
220
230
240
250
260
270
280
290
300
310

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 45% of days. Sticky, muggy-or-worse air turns up on roughly 17% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11914212718
22116212516
32317222414
42518222312
52719222210
6292022218
7312122207
8332222195
9342222174
10362321163
11382321153
12392321152
13412321142
14422221131
15442220131
16452220121
17472219120
18482119120
19502118110
20522017110
21522017110
22542016100
23561915100
2458191490
2559191390
2662181280
2763181180
2864181170
2965181070
306817960
316917950

Wind in December

Winds average 7 km/h in December.

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

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 24 min at the start of December to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 7:03 AM to 7:18 AM, and sunset from 6:24 PM to 6:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:036:24
211.47:046:25
311.37:046:25
411.37:056:25
511.37:056:26
611.37:066:26
711.37:066:26
811.37:076:26
911.37:076:27
1011.37:086:27
1111.37:086:28
1211.37:096:28
1311.37:096:28
1411.37:106:29
1511.37:106:29
1611.37:116:29
1711.37:116:30
1811.37:126:30
1911.37:126:31
2011.37:136:31
2111.37:136:32
2211.37:146:32
2311.37:146:33
2411.37:156:33
2511.37:156:34
2611.37:166:34
2711.37:166:35
2811.37:166:35
2911.37:176:36
3011.37:176:36
3111.37:186:37

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.35 kWh/m².

For context, solar energy here swings from a low near 4.11 kWh/m² to a high of 6.97 kWh/m² in April across the year — December's 5.35 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in December

Hazard calendar for Koumbia

In seasonPeak

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

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

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

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

Is December a good time to visit Koumbia?

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

4.4
Sightseeing
1st-best month of the year
7.8
Beach & pool
1st-best month of the year

December is a reasonable time to visit Koumbia for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Koumbia in December

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

In December, Koumbia sees daytime highs around 33°C and nights near 19°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Koumbia in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Koumbia peaks around March 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 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 highMar 18UV 13Dec 17UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar13Extreme
Apr12Extreme
May10Extreme
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep13Extreme
Oct11Extreme
Nov9Very high
Dec7Very high

Air quality in Koumbia in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Koumbia is worst in May — around 90 µg/m³ PM2.5 (unhealthy), about 7.2× the cleanest month (August, 12 µg/m³).

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyModeratePoorMay 1188 µg/m³Aug 1713 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb62Unhealthy
Mar59Unhealthy
Apr83Unhealthy
May90Unhealthy
Jun29Moderate
Jul16Moderate
Aug12Moderate
Sep15Moderate
Oct31Moderate
Nov34Moderate
Dec47Poor
Location & terrain

Where is Koumbia?

Koumbia sits at 11.8°N, 13.5°W, 115 m above sea level, in Guinea. The nearest listed city is Wendou Borou, 58 km away.

Wendou BorouKamabiKoundaraSangarédiGabúTéliméléBokéBafatá

Topography around Koumbia

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

Within 3 km, the terrain around Koumbia has only modest variations in elevation — a maximum elevation change of 158 m around an average of 147 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 410 m; within 80 km, large variations in elevation — a maximum elevation change of 1,072 m.

The land around Koumbia is covered by trees (41%) and shrubs (38%) within 3 km, trees (49%) and shrubs (33%) within 16 km, and trees (60%) and shrubs (20%) within 80 km.

3 km
158 m
16 km
410 m
80 km
1,072 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Wendou Borou 58 km · Kamabi 67 km · Koundara 79 km · Sangarédi 83 km · Gabú 95 km · Télimélé 112 km · Boké 129 km · Bafatá 133 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 Koumbia (11.8°, -13.5°, elevation 115 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).