Karusi weather in December

In December, Karusi sees average daytime highs of 25°C and overnight lows near 15°C, with 242 mm of rain across 25.9 wet days and about 12.2 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 3% of the time in December, and the air most often feels humid.

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 Karusi's 10th-clearest and 12th-windiest month. For the whole year in context, see Karusi's year-round climate.

Daytime high
25°
9th warmest
Overnight low
15°
3rd coldest
Rainfall
242 mm
25.9 wet days
Daylight
12 h 12 min
5:50 AM – 6:01 PM
Cloud cover
80%
10th clearest
Wind
4 km/h
12th windiest
Solar energy
5.37 kWh/m²
Travel score
4.3
out of 10

Karusi 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 25°C through the month.

A typical December day in Karusi reaches about 25°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 26°C. Set against its neighbours, December runs on par with November and on par with January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12515
22515
32515
42515
52515
62515
72515
82515
92515
102515
112515
122515
132515
142515
152515
162515
172515
182515
192515
202515
212515
222515
232515
242515
252515
262515
272515
282515
292515
302516
312516

Karusi weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 16°20123.312.24.6
Feb26° / 16°17821.412.14.5
Mar25° / 16°21726.3124.2
Apr24° / 16°21025.311.94.2
May25° / 16°8813.211.96.3
Jun25° / 15°9211.87.8
Jul26° / 15°30.711.88.0
Aug27° / 16°172.511.97.4
Sep27° / 17°527.2126.6
Oct26° / 16°16117.912.15.3
Nov25° / 16°24725.812.14.1
Dec25° / 15°24225.912.24.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 11% of December, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1991
2991
3991
4991
51090
61090
71189
81189
91288
101288
111387
121387
131585
141585
151684
161684
171783
181783
191783
201783
211783
221684
231684
241684
251684
261684
271684
281684
291684
301684
311684

Chance of precipitation in December

Any precipitation

Karusi gets around 242 mm of rain over 25.9 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 83% and peaks near 90% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
190
290
389
489
588
688
787
887
986
1085
1185
1284
1384
1483
1582
1682
1781
1881
1981
2081
2180
2280
2380
2480
2580
2680
2780
2879
2979
3079
3179

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 78% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
101783
201783
301783
401783
501882
601882
701981
801981
902080
1002179
1102179
1202278
1302278
1402377
1502476
1602476
1702476
1802575
1902575
2002575
2112574
2212574
2312475
2412475
2512475
2612475
2712376
2802377
2902377
3002278
3102278

Wind in December

Winds average 4 km/h in December, the calmest month.

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
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
265calm
275calm
285calm
295calm
305calm
315calm

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 5:44 AM to 5:57 AM, and sunset from 5:54 PM to 6:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:445:54
212.25:445:55
312.25:455:55
412.25:455:55
512.25:465:56
612.25:465:56
712.25:465:57
812.25:475:57
912.25:475:58
1012.25:485:58
1112.25:485:59
1212.25:485:59
1312.25:495:59
1412.25:496:00
1512.25:506:00
1612.25:506:01
1712.25:516:01
1812.25:516:02
1912.25:526:02
2012.25:526:03
2112.25:526:03
2212.25:536:04
2312.25:536:04
2412.25:546:05
2512.25:546:05
2612.25:556:06
2712.25:556:06
2812.25:566:06
2912.25:566:07
3012.25:576:07
3112.25:576:08

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.37 kWh/m².

For context, solar energy here swings from a low near 5.02 kWh/m² to a high of 5.96 kWh/m² in February across the year — December's 5.37 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.4Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in December

Hazard calendar for Karusi

In seasonPeak

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

Karusi'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 Karusi?

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

4.3
Sightseeing
9th-best month of the year
3.8
Beach & pool
10th-best month of the year

December is a reasonable time to visit Karusi for sightseeing.

What to pack for Karusi in December

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

In December, Karusi sees daytime highs around 25°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 26 days see rain.

rain gearlight clothessun protection

UV index in Karusi in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Karusi peaks around March 17 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 16Jun 19UV 10
UV index (midday)Level
Jan11Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep14Extreme
Oct14Extreme
Nov13Extreme
Dec12Extreme

Air quality in Karusi 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 Karusi is worst in August — around 68 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyUnhealthyAug 1968 µg/m³Apr 1551 µg/m³
PM2.5 (µg/m³)Level
Jan60Unhealthy
Feb59Unhealthy
Mar55Poor
Apr51Poor
May55Unhealthy
Jun65Unhealthy
Jul64Unhealthy
Aug68Unhealthy
Sep66Unhealthy
Oct57Unhealthy
Nov55Poor
Dec57Unhealthy
Location & terrain

Where is Karusi?

Karusi sits at 3.1°S, 30.2°E, 1,627 m above sea level, in Burundi. The nearest listed city is Zanandore, 18 km away.

ZanandoreNgoziGitegaBugaramaCendajuruKirundoKabangaKayanza

Topography around Karusi

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

Within 3 km, the terrain around Karusi has only modest variations in elevation — a maximum elevation change of 181 m around an average of 1,552 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 525 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,689 m.

The land around Karusi is covered by cropland (30%), trees (29%) and grassland (26%) within 3 km, cropland (36%), grassland (29%) and trees (23%) within 16 km, and grassland (34%) and cropland (34%) within 80 km.

3 km
181 m
16 km
525 m
80 km
1,689 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Zanandore 18 km · Ngozi 43 km · Gitega 45 km · Bugarama 48 km · Cendajuru 53 km · Kirundo 58 km · Kabanga 62 km · Kayanza 63 km

Burundi travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type C / E
220 V · 50 Hz
Prices
≈ 34% of US
price level, 2025
GDP per capita
$234
2025
Happiness
3.8 / 10
World Happiness, 2020
Homicide rate
5.6
per 100k, 2016
Road deaths
35.5
per 100k/yr, 2019
Income group
Low
World Bank
Religion
Christian 94%Muslim 3%other 1%none 1%

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 Karusi (-3.1014°, 30.1628°, elevation 1,627 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).