Bumba weather in December

In December, Bumba sees average daytime highs of 31°C and overnight lows near 22°C, with 60 mm of rain across 11.1 wet days and about 11.9 hours of daylight. It is the 5th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 16% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 h 54 min at the start of December to 11 h 54 min by month's end. Set against the rest of the year, December is Bumba's 2nd-clearest and 5th-windiest month. For the whole year in context, see Bumba's year-round climate.

Daytime high
31°
5th warmest
Overnight low
22°
7th coldest
Rainfall
60 mm
11.1 wet days
Daylight
11 h 54 min
5:30 AM – 5:23 PM
Cloud cover
66%
2nd clearest
Wind
5 km/h
5th windiest
Solar energy
5.21 kWh/m²
Travel score
4.5
out of 10

Bumba is port locality, capital of the territory of Bumba, in the province of Mongala in the north of the Democratic Republic of 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 31°C through the month.

A typical December day in Bumba reaches about 31°C in the afternoon and slips back to 22°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 33°C. Set against its neighbours, December runs about 1°C warmer than November and about 2°C cooler than January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13022
23022
33022
43022
53022
63022
73022
83022
93022
103022
113022
123022
133022
143022
153022
163122
173122
183122
193122
203122
213122
223122
233122
243122
253122
263122
273122
283122
293122
303122
313122

How December really feels in Bumba

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.

Bumba weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan32° / 22°418.311.94.0
Feb33° / 23°6911.111.93.3
Mar32° / 23°13618.5123.2
Apr31° / 23°14321.1123.3
May30° / 23°12621.312.13.5
Jun30° / 23°1082012.13.8
Jul29° / 22°11921.812.13.8
Aug29° / 22°15024.512.13.5
Sep29° / 22°15724.8123.4
Oct29° / 22°17925.9123.4
Nov29° / 22°1452311.93.6
Dec31° / 22°6011.111.94.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 24% of December, with mostly cloudy or overcast conditions the remaining 60%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23169
33268
43367
53367
63466
73466
83565
93763
103763
113763
123961
134060
144159
154258
164258
174357
184357
194456
204456
214654
224654
234654
244555
254555
264654
274555
284456
294456
304456
314555

Chance of precipitation in December

Any precipitation

Bumba gets around 60 mm of rain over 11.1 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 36% and peaks near 55% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
155
254
352
451
550
649
747
846
944
1042
1140
1239
1337
1435
1534
1632
1731
1830
1929
2028
2127
2226
2326
2426
2526
2626
2727
2827
2927
3027
3126

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 86% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1014914
2014914
3014914
4015913
5015913
6015913
7015913
8016912
9016912
10016912
11017902
12017902
13018892
14018892
15019882
160110872
170110872
180111862
190112852
200113842
210114832
220115822
230116812
240117802
251117792
261117792
271118782
281218772
291219771
302319751
312320741

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
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
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 11 h 54 min at the start of December to 11 h 54 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 5:23 AM to 5:37 AM, and sunset from 5:16 PM to 5:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.95:235:16
211.95:245:17
311.95:245:17
411.95:255:17
511.95:255:18
611.95:255:18
711.95:265:19
811.95:265:19
911.95:275:19
1011.95:275:20
1111.95:285:20
1211.95:285:21
1311.95:295:21
1411.95:295:22
1511.95:305:22
1611.95:305:23
1711.95:315:23
1811.95:315:23
1911.95:315:24
2011.95:325:24
2111.95:325:25
2211.95:335:25
2311.95:335:26
2411.95:345:26
2511.95:345:27
2611.95:355:27
2711.95:355:28
2811.95:365:28
2911.95:365:29
3011.95:375:29
3111.95:375:30

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.21 kWh/m².

For context, solar energy here swings from a low near 4.86 kWh/m² to a high of 5.72 kWh/m² in February across the year — December's 5.21 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
35.0Bright
45.0Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in December

Is December a good time to visit Bumba?

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

4.5
Sightseeing
1st-best month of the year
6.4
Beach & pool
2nd-best month of the year

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

What to pack for Bumba in December

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

In December, Bumba sees daytime highs around 31°C and nights near 22°C. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Bumba 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 Bumba peaks around March 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 12 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeVery highMar 20UV 13Jul 12UV 8
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun9Very high
Jul8Very high
Aug12Extreme
Sep11Extreme
Oct13Extreme
Nov10Very high
Dec9Very high

Air quality in Bumba 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 Bumba is worst in February — around 164 µg/m³ PM2.5 (very unhealthy), about 16.2× the cleanest month (October, 10 µg/m³).

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyUnhealthyModerateGoodModerateFeb 20160 µg/m³Oct 1110 µg/m³
PM2.5 (µg/m³)Level
Jan50Poor
Feb164Very unhealthy
Mar146Unhealthy
Apr38Poor
May16Moderate
Jun18Moderate
Jul20Moderate
Aug16Moderate
Sep11Good
Oct10Good
Nov15Moderate
Dec28Moderate
Location & terrain

Where is Bumba?

Bumba sits at 2.2°N, 22.5°E, 362 m above sea level, in Democratic Republic of the Congo. The nearest listed city is Lisala, 106 km away.

AketiBasokoBusingaBingaBondoButaYangambi

Topography around Bumba

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

Within 3 km, the terrain around Bumba has only modest variations in elevation — a maximum elevation change of 26 m around an average of 355 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 72 m; within 80 km, only modest variations in elevation — a maximum elevation change of 229 m.

The land around Bumba is covered by artificial surfaces (40%), grassland (27%) and water (22%) within 3 km, trees (56%) and grassland (22%) within 16 km, and trees (91%) within 80 km.

3 km
26 m
16 km
72 m
80 km
229 m
treesshrubsgrasslandartificial surfaceswater
December weather nearby: Lisala 106 km · Aketi 158 km · Basoko 166 km · Businga 217 km · Binga 220 km · Bondo 226 km · Buta 260 km · Yangambi 270 km

Democratic Republic of the Congo travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 42% of US
price level, 2025
GDP per capita
$807
2025
Happiness
3.8 / 10
World Happiness, 2025
Safe drinking water
12%
of population, 2024
Road deaths
34.9
per 100k/yr, 2019
Income group
Low
World Bank
English
Very low
EF EPI 400

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 Bumba (2.1877°, 22.4683°, elevation 362 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).