Kayes weather in December

In December, Kayes sees average daytime highs of 30°C and overnight lows near 23°C, with 175 mm of rain across 25.1 wet days and about 12.2 hours of daylight. It is the 8th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 1% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 12 min at the start of December to 12 h 12 min by month's end. Set against the rest of the year, December is Kayes's 9th-clearest and 11th-windiest month. For the whole year in context, see Kayes's year-round climate.

Daytime high
30°
8th warmest
Overnight low
23°
7th coldest
Rainfall
175 mm
25.1 wet days
Daylight
12 h 12 min
5:56 AM – 6:10 PM
Cloud cover
82%
9th clearest
Wind
4 km/h
11th windiest
Solar energy
4.41 kWh/m²
Travel score
3.0
out of 10

Kayes is village in Bouenza Department, Republic of the Congo.

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Kayes reaches about 30°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13023
23023
33023
43023
53023
63023
73023
83023
93023
103023
113023
123023
133023
143023
153023
163023
173023
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How December really feels in Kayes

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.

Kayes weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°13522.612.23.2
Feb31° / 23°11818.812.13.1
Mar32° / 23°12520.8123.0
Apr31° / 23°15021.511.93.0
May31° / 23°6913.911.84.2
Jun28° / 21°30.611.86.7
Jul28° / 19°10.211.87.3
Aug28° / 20°30.711.96.8
Sep29° / 21°113.2125.6
Oct31° / 23°8315.212.13.8
Nov31° / 23°15824.312.23.0
Dec30° / 23°17525.112.23.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11387
21387
31387
41387
51387
61387
71387
81387
91387
101387
111387
121288
131288
141288
151288
161288
171288
181288
191288
201189
211288
221288
231288
241288
251288
261288
271288
281288
291288
301288
311288

Chance of precipitation in December

Any precipitation

Kayes gets around 175 mm of rain over 25.1 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 81% and peaks near 83% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
183
283
383
483
583
683
783
883
983
1083
1182
1282
1382
1482
1582
1681
1781
1881
1981
2080
2180
2280
2379
2479
2579
2679
2778
2878
2978
3078
3178

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 98% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
11990
21990
31990
41990
51990
61990
71990
801000
901000
1001000
1101000
1201000
1301000
1401000
1501000
161990
171990
181990
191990
201990
211990
222980
232980
242980
252980
262980
272980
282980
292971
302971
312971

Wind in December

Winds average 4 km/h in December.

Across December, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 12 min at the start of December to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:50 AM to 6:03 AM, and sunset from 6:03 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:506:03
212.25:506:04
312.25:516:04
412.25:516:05
512.25:516:05
612.25:526:06
712.25:526:06
812.25:526:07
912.25:536:07
1012.25:536:07
1112.25:546:08
1212.25:546:08
1312.25:546:09
1412.25:556:09
1512.25:556:10
1612.25:566:10
1712.25:566:11
1812.25:576:11
1912.25:576:12
2012.25:586:12
2112.25:586:13
2212.25:596:13
2312.25:596:14
2412.25:596:14
2512.26:006:15
2612.26:006:15
2712.26:016:15
2812.26:016:16
2912.26:026:16
3012.26:026:17
3112.26:036:17

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.41 kWh/m².

For context, solar energy here swings from a low near 3.56 kWh/m² to a high of 5 kWh/m² in March across the year — December's 4.41 kWh/m² falls in the middle.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.4Bright
104.4Bright
114.4Bright
124.4Bright
134.4Bright
144.4Bright
154.4Bright
164.4Bright
174.4Bright
184.4Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in December

Hazard calendar for Kayes

In seasonPeak

In December, Kayes sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Kayes's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Kayes?

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

3.0
Sightseeing
9th-best month of the year
4.3
Beach & pool
12th-best month of the year

December is a weaker month for outdoor sightseeing in Kayes.

What to pack for Kayes in December

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

In December, Kayes sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. About 25 days see rain.

light clothesrain gear

UV index in Kayes in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kayes peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeMar 17UV 15Jun 23UV 6
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar15Extreme
Apr13Extreme
May9Very high
Jun6High
Jul6High
Aug7High
Sep10Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Kayes 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 Kayes is worst in July — around 68 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (November, 14 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorUnhealthyPoorModerateJul 2167 µg/m³Nov 2014 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb21Moderate
Mar18Moderate
Apr17Moderate
May26Moderate
Jun41Poor
Jul68Unhealthy
Aug61Unhealthy
Sep44Poor
Oct21Moderate
Nov14Moderate
Dec16Moderate
Location & terrain

Where is Kayes?

Kayes sits at 4.2°S, 13.3°E, 165 m above sea level, in Republic of the Congo. The nearest listed city is Nkayi, 2.0 km away.

SibitiLoutétéDolisieMouyondziBelize

Topography around Kayes

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

Within 3 km, the terrain around Kayes has only modest variations in elevation — a maximum elevation change of 57 m around an average of 165 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 421 m; within 80 km, large variations in elevation — a maximum elevation change of 796 m.

The land around Kayes is covered by grassland (53%) and shrubs (20%) within 3 km, grassland (72%) within 16 km, and grassland (53%) and trees (45%) within 80 km.

3 km
57 m
16 km
421 m
80 km
796 m
treesshrubsgrasslandartificial surfaceswater
December weather nearby: Nkayi 2.0 km · Loudima 26 km · Bouansa 53 km · Sibiti 59 km · Loutété 63 km · Dolisie 69 km · Mouyondzi 75 km · Belize 76 km

Republic of the Congo travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$2,515
2025
Happiness
4.5 / 10
World Happiness, 2025
Safe drinking water
46%
of population, 2021
Road deaths
29.7
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Roman Catholic 33%Awakening Churches/Christian Revival 22%Protestant 20%none 11%

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 Kayes (-4.2049°, 13.2861°, elevation 165 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).