Kasamwa weather in December

In December, Kasamwa sees average daytime highs of 26°C and overnight lows near 18°C, with 171 mm of rain across 23.7 wet days and about 12.2 hours of daylight. It is the 12th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 13% 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 Kasamwa's 9th-clearest and 12th-windiest month. For the whole year in context, see Kasamwa's year-round climate.

Daytime high
26°
12th warmest
Overnight low
18°
3rd coldest
Rainfall
171 mm
23.7 wet days
Daylight
12 h 12 min
6:42 AM – 6:51 PM
Cloud cover
72%
9th clearest
Wind
6 km/h
12th windiest
Solar energy
5.51 kWh/m²
Travel score
4.5
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical December day in Kasamwa reaches about 26°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 24°C and 28°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12618
22618
32618
42618
52618
62618
72618
82618
92618
102618
112618
122618
132618
142618
152618
162618
172618
182618
192618
202618
212618
222618
232618
242618
252718
262718
272718
282718
292718
302718
312718

Kasamwa weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 18°12520.912.14.8
Feb28° / 18°9215.412.15.0
Mar28° / 18°12918.8124.8
Apr27° / 18°13317.911.95.0
May28° / 19°478.411.96.4
Jun28° / 18°193.311.86.6
Jul29° / 18°81.411.96.8
Aug29° / 18°365.611.96.1
Sep29° / 18°6811125.5
Oct28° / 18°13719.512.14.8
Nov26° / 18°18824.112.14.2
Dec26° / 18°17123.712.24.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 71%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12476
22476
32476
42476
52476
62476
72575
82575
92575
102575
112773
122773
132773
142872
153070
163169
173169
183169
193268
203268
213268
223367
233367
243367
253367
263466
273466
283466
293565
303565
313565

Chance of precipitation in December

Any precipitation

Kasamwa gets around 171 mm of rain over 23.7 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 76% and peaks near 79% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
179
279
379
479
579
678
778
878
978
1078
1178
1277
1377
1477
1576
1676
1776
1876
1975
2075
2175
2275
2375
2474
2574
2674
2773
2873
2973
3072
3172

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 37% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
115445
215544
315544
415643
515643
615742
715841
815940
916039
1016138
1116237
1216336
1316435
1416435
1516534
1616534
1716633
1816633
1916633
2016633
2116633
2216633
2316633
2416534
2516534
2616534
2716534
2816534
2926335
3026335
3126335

Wind in December

Winds average 6 km/h in December, the calmest month.

Across December, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 6:49 AM, and sunset from 6:45 PM to 6:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:356:45
212.26:366:45
312.26:366:45
412.26:376:46
512.26:376:46
612.26:376:47
712.26:386:47
812.26:386:48
912.26:386:48
1012.26:396:49
1112.26:396:49
1212.26:406:49
1312.26:406:50
1412.26:416:50
1512.26:416:51
1612.26:426:51
1712.26:426:52
1812.26:426:52
1912.26:436:53
2012.26:436:53
2112.26:446:54
2212.26:446:54
2312.26:456:55
2412.26:456:55
2512.26:466:56
2612.26:466:56
2712.26:476:57
2812.26:476:57
2912.26:486:57
3012.26:486:58
3112.26:496:58

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.51 kWh/m².

For context, solar energy here swings from a low near 5.38 kWh/m² to a high of 6.27 kWh/m² in February across the year — December's 5.51 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
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.7Bright
285.7Bright
295.7Bright
305.7Bright
315.7Bright
Planning a trip in December

Hazard calendar for Kasamwa

In seasonPeak

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

Kasamwa'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 Kasamwa?

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

4.5
Sightseeing
11th-best month of the year
4.4
Beach & pool
11th-best month of the year

December is a reasonable time to visit Kasamwa for sightseeing.

What to pack for Kasamwa in December

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

In December, Kasamwa sees daytime highs around 26°C and nights near 18°C. Pack rain gear. Worth having: light clothes and sun protection. About 24 days see rain.

rain gearlight clothessun protection

UV index in Kasamwa in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kasamwa 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
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec11Extreme

Air quality in Kasamwa 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 Kasamwa is worst in January — around 23 µg/m³ PM2.5 (moderate), about 1.6× the cleanest month (October, 14 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJan 1922 µg/m³Oct 1814 µg/m³
PM2.5 (µg/m³)Level
Jan23Moderate
Feb21Moderate
Mar17Moderate
Apr15Moderate
May15Moderate
Jun15Moderate
Jul15Moderate
Aug17Moderate
Sep17Moderate
Oct14Moderate
Nov16Moderate
Dec18Moderate
Location & terrain

Where is Kasamwa?

Kasamwa sits at 2.9°S, 32.4°E, 1,199 m above sea level, in Tanzania. The nearest listed city is Geita, 22 km away.

Topography around Kasamwa

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

Within 3 km, the terrain around Kasamwa has only modest variations in elevation — a maximum elevation change of 148 m around an average of 1,211 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 370 m; within 80 km, large variations in elevation — a maximum elevation change of 670 m.

The land around Kasamwa is covered by cropland (60%) within 3 km, cropland (55%) and shrubs (22%) within 16 km, and cropland (54%) and water (20%) within 80 km.

3 km
148 m
16 km
370 m
80 km
670 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Geita 22 km · Sengerema 32 km · Mhalamba 56 km · Katoro 58 km · Mwanza 64 km · Buseresere 65 km · Usagara 66 km · Mhango 67 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 Kasamwa (-2.85°, 32.4333°, elevation 1,199 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).