Rumbek weather in December

In December, Rumbek sees average daytime highs of 35°C and overnight lows near 23°C, with 4 mm of rain across 1 wet days and about 11.6 hours of daylight. It is the 5th-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 35°C through the month. The sky is clear or mostly clear about 53% of the time in December, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of December to 11 h 36 min by month's end. Set against the rest of the year, December is Rumbek's 1st-clearest and 3rd-windiest month. For the whole year in context, see Rumbek's year-round climate.

Daytime high
35°
5th warmest
Overnight low
23°
7th coldest
Rainfall
4 mm
1 wet days
Daylight
11 h 36 min
7:09 AM – 6:46 PM
Cloud cover
41%
1st clearest
Wind
9 km/h
3rd windiest
Solar energy
5.69 kWh/m²
Travel score
3.2
out of 10

Rumbek is human settlement.

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 35°C through the month.

A typical December day in Rumbek reaches about 35°C in the afternoon and slips back to 23°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 33°C and 37°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13423
23423
33423
43423
53423
63423
73423
83523
93523
103523
113523
123523
133523
143523
153523
163523
173523
183523
193523
203523
213523
223523
233523
243523
253523
263523
273523
283523
293523
303523
313523

How December really feels in Rumbek

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.

Rumbek weather by month

How December compares with the rest of the year at a glance. December is the 5th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan36° / 24°30.411.62.7
Feb37° / 25°4111.81.7
Mar38° / 26°245.1121.4
Apr36° / 26°7713.712.11.9
May33° / 24°13620.712.32.6
Jun31° / 23°13220.612.43.2
Jul30° / 22°16723.112.43.4
Aug30° / 22°17424.112.23.3
Sep31° / 22°15021.9123.3
Oct31° / 23°13121.111.83.2
Nov33° / 23°338.411.73.6
Dec35° / 23°4111.63.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in December, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of December, with mostly cloudy or overcast conditions the remaining 27%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16832
26832
36931
46931
57030
67129
77129
87129
97228
107228
117228
127426
137426
147525
157525
167624
177723
187723
197822
207822
217822
227723
237723
247624
257525
267525
277327
287327
297228
307129
317030

Chance of precipitation in December

Any precipitation

Rumbek gets around 4 mm of rain over 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 3% and peaks near 8% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
18
28
37
47
57
66
76
86
95
105
114
124
134
143
153
162
172
182
191
201
211
221
231
241
251
261
271
281
291
301
311

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 58% of days. Sticky, muggy-or-worse air turns up on roughly 10% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1222526234
2242526224
3262525203
4292525193
5312524183
6342523162
7362422152
8392420142
9422319132
10462318131
11492216121
12512215111
13552113101
1457211291
1560211180
1663201070
176520960
186819850
197019740
207118740
217318630
227417630
237617520
247716520
257716520
267716520
277815520
287815520
297915420
308014420
318014420

Wind in December

Winds average 9 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 36 min at the start of December to 11 h 36 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 7:02 AM to 7:16 AM, and sunset from 6:40 PM to 6:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.67:026:40
211.67:036:40
311.67:036:41
411.67:036:41
511.67:046:41
611.67:046:42
711.67:056:42
811.67:056:42
911.67:066:43
1011.67:066:43
1111.67:076:44
1211.67:076:44
1311.67:086:44
1411.67:086:45
1511.67:096:45
1611.67:096:46
1711.67:106:46
1811.67:106:47
1911.67:116:47
2011.67:116:47
2111.67:126:48
2211.67:126:48
2311.67:136:49
2411.67:136:49
2511.67:146:50
2611.67:146:50
2711.67:146:51
2811.67:156:51
2911.67:156:52
3011.67:166:52
3111.67:166:53

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.69 kWh/m².

For context, solar energy here swings from a low near 5.08 kWh/m² to a high of 6.35 kWh/m² in February across the year — December's 5.69 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.9Bright
295.9Bright
305.9Bright
315.9Bright
Planning a trip in December

Hazard calendar for Rumbek

In seasonPeak

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

Rumbek's rainy season runs May–October, 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 Rumbek?

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

3.2
Sightseeing
5th-best month of the year
6.9
Beach & pool
1st-best month of the year

December is a weaker month for outdoor sightseeing in Rumbek. The water and warmth also suit a beach or pool day.

What to pack for Rumbek in December

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

In December, Rumbek sees daytime highs around 35°C and nights near 23°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Rumbek 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 Rumbek peaks around March 20 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 20UV 14Dec 14UV 9
UV index (midday)Level
Jan11Extreme
Feb11Extreme
Mar14Extreme
Apr13Extreme
May11Extreme
Jun11Extreme
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct13Extreme
Nov10Very high
Dec9Very high

Air quality in Rumbek 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 Rumbek is worst in January — around 81 µg/m³ PM2.5 (unhealthy), about 7.2× the cleanest month (September, 11 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyModerateGoodModerateUnhealthyJan 1281 µg/m³Sep 1311 µg/m³
PM2.5 (µg/m³)Level
Jan81Unhealthy
Feb77Unhealthy
Mar51Poor
Apr25Moderate
May12Good
Jun16Moderate
Jul16Moderate
Aug12Good
Sep11Good
Oct13Moderate
Nov37Poor
Dec80Unhealthy
Location & terrain

Where is Rumbek?

Rumbek sits at 6.8°N, 29.7°E, 428 m above sea level, in South Sudan. The nearest listed city is Tonj, 122 km away.

TonjLeerWauBorKuacjokGogrialYambioJuba

Topography around Rumbek

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

Within 3 km, the terrain around Rumbek has only modest variations in elevation — a maximum elevation change of 10 m around an average of 422 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 47 m; within 80 km, only modest variations in elevation — a maximum elevation change of 160 m.

The land around Rumbek is covered by grassland (72%) and artificial surfaces (20%) within 3 km, grassland (67%) and shrubs (26%) within 16 km, and grassland (63%) and shrubs (22%) within 80 km.

3 km
10 m
16 km
47 m
80 km
160 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwetland
December weather nearby: Tonj 122 km · Leer 174 km · Wau 211 km · Bor 218 km · Kuacjok 250 km · Gogrial 259 km · Yambio 286 km · Juba 303 km

South Sudan travel facts

Travel advisory
Level 4
Do Not Travel
Prices
≈ 6% of US
price level, 2021
GDP per capita
$1,080
2015
Happiness
2.8 / 10
World Happiness, 2019
Homicide rate
14
per 100k, 2012
Road deaths
36.7
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Christian 61%folk religion 33%Muslim 6%

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 Rumbek (6.8062°, 29.6774°, elevation 428 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).