Masumbwe weather in December

In December, Masumbwe sees average daytime highs of 27°C and overnight lows near 18°C, with 136 mm of rain across 20.3 wet days and about 12.2 hours of daylight. It is the 12th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 14% 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 Masumbwe's 9th-clearest and 12th-windiest month. For the whole year in context, see Masumbwe's year-round climate.

Daytime high
27°
12th warmest
Overnight low
18°
3rd coldest
Rainfall
136 mm
20.3 wet days
Daylight
12 h 12 min
6:41 AM – 6:54 PM
Cloud cover
72%
9th clearest
Wind
5 km/h
12th windiest
Solar energy
5.41 kWh/m²
Travel score
4.8
out of 10

Masumbwe is city in Geita, Tanzania.

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 27°C through the month.

A typical December day in Masumbwe reaches about 27°C in the afternoon and slips back to 18°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12818
22818
32818
42818
52718
62718
72718
82718
92718
102718
112718
122718
132718
142718
152718
162718
172718
182718
192718
202718
212718
222718
232718
242718
252718
262718
272718
282718
292718
302818
312818

Masumbwe weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 18°1171912.25.0
Feb28° / 18°8815.312.14.8
Mar28° / 19°13017.9124.8
Apr27° / 18°11716.611.95.2
May28° / 19°315.111.86.5
Jun29° / 18°20.411.86.7
Jul29° / 18°10.211.86.8
Aug30° / 19°71.211.96.1
Sep31° / 20°142.6125.3
Oct31° / 20°478.312.14.7
Nov28° / 19°13117.412.24.7
Dec27° / 18°13620.312.24.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 17% of December, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23070
33070
43070
53070
62971
72971
82971
92971
103070
113070
123070
133070
143169
153169
163268
173169
183169
193268
203268
213268
223268
233169
243169
253169
263169
273169
283070
293169
303169
313169

Chance of precipitation in December

Any precipitation

Masumbwe gets around 136 mm of rain over 20.3 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 65% and peaks near 66% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
166
266
366
466
566
666
766
866
966
1066
1166
1266
1366
1466
1566
1666
1766
1866
1966
2065
2165
2265
2365
2465
2564
2664
2764
2863
2963
3063
3163

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 62% of days. Sticky, muggy-or-worse air turns up on roughly 33% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1195931
2186031
3086032
4086032
5076231
6076231
7076231
8066331
9066331
10066331
11066331
12056431
13056431
14056431
15056431
16046531
17046531
18046531
19046432
20046432
21046333
22036334
23036334
24036235
25036136
26036136
27036037
28045838
29045838
30045739
31045640

Wind in December

Winds average 5 km/h in December, the calmest month.

Across December, daily wind ranges from about 5 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
15calm
25calm
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 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 6:35 AM to 6:48 AM, and sunset from 6:47 PM to 7:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:356:47
212.26:366:47
312.26:366:48
412.26:366:48
512.26:376:49
612.26:376:49
712.26:376:49
812.26:386:50
912.26:386:50
1012.26:396:51
1112.26:396:51
1212.26:396:52
1312.26:406:52
1412.26:406:53
1512.26:416:53
1612.26:416:54
1712.26:426:54
1812.26:426:55
1912.26:436:55
2012.26:436:56
2112.26:436:56
2212.26:446:57
2312.26:446:57
2412.26:456:57
2512.26:456:58
2612.26:466:58
2712.26:466:59
2812.26:476:59
2912.26:477:00
3012.26:487:00
3112.26:487:01

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.41 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 5.41 kWh/m² to a high of 6.56 kWh/m² in September across the year — December's 5.41 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.4Bright
225.5Bright
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 Masumbwe

In seasonPeak

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

Masumbwe's rainy season runs November–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 Masumbwe?

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

4.8
Sightseeing
8th-best month of the year
5.0
Beach & pool
12th-best month of the year

December is a reasonable time to visit Masumbwe for sightseeing.

What to pack for Masumbwe in December

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

In December, Masumbwe sees daytime highs around 27°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Masumbwe 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 Masumbwe peaks around March 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 18 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 16Jun 18UV 10
UV index (midday)Level
Jan12Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Very high
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec12Extreme

Air quality in Masumbwe 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 Masumbwe is worst in January — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (May, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJan 2016 µg/m³May 198 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb15Moderate
Mar12Good
Apr10Good
May8Good
Jun9Good
Jul10Good
Aug11Good
Sep12Good
Oct10Good
Nov11Good
Dec12Moderate
Location & terrain

Where is Masumbwe?

Masumbwe sits at 3.6°S, 32.2°E, 1,191 m above sea level, in Tanzania. The nearest listed city is Ushirombo, 29 km away.

BuseresereKatoroDiobahikaUyovuMhangoGeita

Topography around Masumbwe

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

Within 3 km, the terrain around Masumbwe has only modest variations in elevation — a maximum elevation change of 61 m around an average of 1,184 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 389 m; within 80 km, significant variations in elevation — a maximum elevation change of 433 m.

The land around Masumbwe is covered by cropland (68%) within 3 km, cropland (60%) within 16 km, and cropland (56%) and trees (26%) within 80 km.

3 km
61 m
16 km
389 m
80 km
433 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Ushirombo 29 km · Kahama 51 km · Buseresere 73 km · Katoro 76 km · Diobahika 80 km · Uyovu 83 km · Mhango 84 km · Geita 85 km

Tanzania travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type D / G
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$1,319
2025
Happiness
3.9 / 10
World Happiness, 2025
Safe drinking water
31%
of population, 2024
Homicide rate
3.7
per 100k, 2020
Road deaths
31.1
per 100k/yr, 2019
Income group
Lower middle
World Bank
English
Low
EF EPI 479
Religion
Christian 63%Muslim 34%folk religion 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 Masumbwe (-3.6333°, 32.1833°, elevation 1,191 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).