Mossaka weather in December

In December, Mossaka sees average daytime highs of 30°C and overnight lows near 23°C, with 150 mm of rain across 21.6 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 3rd-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 8% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of December to 12 h 06 min by month's end. Set against the rest of the year, December is Mossaka's 7th-clearest and 10th-windiest month. For the whole year in context, see Mossaka's year-round climate.

Daytime high
30°
6th warmest
Overnight low
23°
7th coldest
Rainfall
150 mm
21.6 wet days
Daylight
12 h 06 min
5:47 AM – 5:51 PM
Cloud cover
78%
7th clearest
Wind
5 km/h
10th windiest
Solar energy
4.93 kWh/m²
Travel score
3.6
out of 10

Mossaka is town in the 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 Mossaka 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 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 Mossaka

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.

Mossaka weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 23°10817.312.13.8
Feb31° / 24°12416.6123.5
Mar31° / 24°14921.3123.2
Apr31° / 24°14922.6123.1
May30° / 24°12121.111.93.5
Jun30° / 23°5111.211.94.9
Jul29° / 23°4210.311.95.2
Aug30° / 23°8015.5124.4
Sep30° / 23°14023.1123.4
Oct30° / 23°19526.8123.1
Nov30° / 23°18523.912.13.3
Dec30° / 23°15021.612.13.6

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% 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 78%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32476
42377
52377
62377
72476
82377
92377
102377
112377
122476
132476
142278
152278
162278
172278
182278
192179
202179
212278
222179
232179
242179
252278
262179
272179
282278
292278
302377
312377

Chance of precipitation in December

Any precipitation

Mossaka gets around 150 mm of rain over 21.6 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 69% and peaks near 78% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
178
278
378
478
578
677
777
876
975
1074
1172
1271
1370
1469
1569
1668
1767
1867
1966
2065
2164
2264
2363
2463
2562
2662
2762
2861
2961
3060
3159

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 85% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
108812
208812
308812
408812
508812
608812
708812
808812
908812
1008812
1108812
1208713
1308713
1408713
1508713
1608614
1708614
1808614
1908515
2008515
2108515
2208416
2308416
2408416
2518217
2618217
2718217
2818217
2918217
3018217
3128117

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 4 km/h on the calmest days to 5 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
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 06 min at the start of December to 12 h 06 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 5:41 AM to 5:54 AM, and sunset from 5:45 PM to 5:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:415:45
212.15:415:45
312.15:415:45
412.15:425:46
512.15:425:46
612.15:435:47
712.15:435:47
812.15:435:47
912.15:445:48
1012.15:445:48
1112.15:455:49
1212.15:455:49
1312.15:465:50
1412.15:465:50
1512.15:465:51
1612.15:475:51
1712.15:475:52
1812.15:485:52
1912.15:485:52
2012.15:495:53
2112.15:495:53
2212.15:505:54
2312.15:505:54
2412.15:515:55
2512.15:515:55
2612.15:525:56
2712.15:525:56
2812.15:525:57
2912.15:535:57
3012.15:535:58
3112.15:545:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.93 kWh/m².

For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 5.48 kWh/m² in February across the year — December's 4.93 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in December

Is December a good time to visit Mossaka?

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

3.6
Sightseeing
5th-best month of the year
4.9
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Mossaka.

What to pack for Mossaka in December

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

In December, Mossaka sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 22 days see rain.

light clothesrain gearsun protection

UV index in Mossaka in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mossaka peaks around April 9 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highHighVery highExtremeVery highApr 9UV 13Jul 13UV 7
UV index (midday)Level
Jan12Extreme
Feb13Extreme
Mar13Extreme
Apr13Extreme
May10Extreme
Jun8Very high
Jul6High
Aug9Very high
Sep11Extreme
Oct13Extreme
Nov9Very high
Dec9Very high

Air quality in Mossaka 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 Mossaka is worst in July — around 57 µg/m³ PM2.5 (unhealthy), about 5.2× the cleanest month (October, 11 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorPoorModerateModerateJul 2157 µg/m³Oct 2212 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb31Moderate
Mar24Moderate
Apr20Moderate
May24Moderate
Jun40Poor
Jul57Unhealthy
Aug53Poor
Sep22Moderate
Oct11Good
Nov13Moderate
Dec20Moderate
Location & terrain

Where is Mossaka?

Mossaka sits at 1.2°S, 16.8°E, 288 m above sea level, in Republic of the Congo. The nearest listed city is Oyo, 92 km away.

OyoBoloboGambomaOwandoInongoMakouaNiokiMushie

Topography around Mossaka

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

Within 3 km, the terrain around Mossaka has only modest variations in elevation — a maximum elevation change of 20 m around an average of 291 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 42 m; within 80 km, only modest variations in elevation — a maximum elevation change of 169 m.

The land around Mossaka is covered by grassland (38%) and water (29%) within 3 km, trees (33%), grassland (29%) and water (23%) within 16 km, and trees (75%) within 80 km.

3 km
20 m
16 km
42 m
80 km
169 m
treesgrasslandartificial surfaceswaterwetland
December weather nearby: Oyo 92 km · Bolobo 122 km · Gamboma 127 km · Owando 129 km · Inongo 183 km · Makoua 188 km · Nioki 194 km · Mushie 200 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 Mossaka (-1.2198°, 16.7992°, elevation 288 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).