Kilwa Masoko weather in December

In December, Kilwa Masoko sees average daytime highs of 29°C and overnight lows near 26°C, with 108 mm of rain across 18.6 wet days and about 12.5 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 43% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 30 min at the start of December to 12 h 30 min by month's end. Set against the rest of the year, December is Kilwa Masoko's 8th-clearest and 11th-windiest month. For the whole year in context, see Kilwa Masoko's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
26°
10th coldest
Rainfall
108 mm
18.6 wet days
Daylight
12 h 30 min
6:03 AM – 6:34 PM
Cloud cover
52%
8th clearest
Wind
13 km/h
11th windiest
Solar energy
6.03 kWh/m²
Travel score
4.5
out of 10

Kilwa Masoko 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 29°C through the month.

A typical December day in Kilwa Masoko reaches about 29°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12925
22925
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132925
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282926
292926
302926
312926

How December really feels in Kilwa Masoko

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.

Kilwa Masoko weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 26°11216.512.54.5
Feb29° / 26°10915.112.34.4
Mar29° / 25°18723.812.13.8
Apr29° / 25°17621.611.84.2
May28° / 24°619.611.66.1
Jun28° / 23°132.711.57.5
Jul27° / 23°61.311.58.1
Aug27° / 22°71.911.78.2
Sep27° / 23°103.111.98.0
Oct28° / 24°256.312.27.1
Nov29° / 25°5213.712.45.4
Dec29° / 26°10818.612.54.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 39%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17030
27030
37030
46832
56832
66832
76832
86733
96634
106634
116535
126535
136436
146337
156436
166337
176238
186139
196040
205941
215842
225743
235644
245545
255545
265347
275248
285248
295149
304951
314852

Chance of precipitation in December

Any precipitation

Kilwa Masoko gets around 108 mm of rain over 18.6 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 59% and peaks near 61% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
154
255
355
456
556
657
757
857
957
1058
1158
1259
1359
1460
1560
1660
1761
1861
1961
2061
2161
2261
2361
2461
2561
2661
2761
2861
2961
3060
3160

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 63% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
118118
217920
317821
407822
507624
607525
707327
807129
907030
1006832
1106634
1206535
1306337
1406238
1506040
1605941
1705842
1805743
1905644
2005545
2105545
2205446
2305446
2405347
2505347
2605347
2705347
2805347
2905347
3005347
3105347

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 30 min at the start of December to 12 h 30 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 5:57 AM to 6:10 AM, and sunset from 6:26 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:576:26
212.55:576:27
312.55:586:27
412.55:586:28
512.55:586:28
612.55:596:29
712.55:596:29
812.55:596:30
912.56:006:30
1012.56:006:31
1112.56:016:31
1212.56:016:32
1312.56:016:32
1412.56:026:33
1512.56:026:33
1612.56:036:34
1712.56:036:34
1812.56:036:35
1912.56:046:35
2012.56:046:36
2112.56:056:36
2212.56:056:37
2312.56:066:37
2412.56:066:37
2512.56:076:38
2612.56:076:38
2712.56:086:39
2812.56:086:39
2912.56:096:40
3012.56:096:40
3112.56:106:41

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.03 kWh/m².

For context, solar energy here swings from a low near 4.93 kWh/m² to a high of 6.46 kWh/m² in October across the year — December's 6.03 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.2Intense
26.2Intense
36.2Intense
46.2Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.1Intense
106.1Intense
116.1Intense
126.1Intense
136.1Intense
146.1Intense
156.0Intense
166.0Intense
176.0Intense
186.0Intense
196.0Intense
206.0Intense
216.0Bright
226.0Bright
236.0Bright
246.0Bright
255.9Bright
265.9Bright
275.9Bright
285.9Bright
295.9Bright
305.9Bright
315.8Bright
Planning a trip in December

Hazard calendar for Kilwa Masoko

In seasonPeak

In December, Kilwa Masoko sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

Kilwa Masoko sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Kilwa Masoko's monsoon runs December–April, when most of the year's rain falls.

Cyclone
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Kilwa Masoko?

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

4.5
Sightseeing
8th-best month of the year
5.9
Beach & pool
9th-best month of the year

December is a reasonable time to visit Kilwa Masoko for sightseeing.

What to pack for Kilwa Masoko in December

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

In December, Kilwa Masoko sees daytime highs around 29°C and nights near 26°C. Pack light clothes, rain gear and sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Kilwa Masoko in December

The nearest coast averages about 29°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 13 km away) is warmest in March at about 29°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun27Warm
Jul26Warm
Aug26Warm
Sep26Warm
Oct27Warm
Nov28Warm
Dec29Tropical

UV index in Kilwa Masoko in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kilwa Masoko peaks around March 15 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 15UV 15Jun 22UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr13Extreme
May10Extreme
Jun10Very high
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct13Extreme
Nov13Extreme
Dec13Extreme

Air quality in Kilwa Masoko 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 Kilwa Masoko is worst in January — around 15 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJan 2015 µg/m³Apr 228 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb13Moderate
Mar9Good
Apr8Good
May8Good
Jun8Good
Jul10Good
Aug10Good
Sep9Good
Oct10Good
Nov8Good
Dec9Good
Location & terrain

Where is Kilwa Masoko?

Kilwa Masoko sits at 8.9°S, 39.5°E, 23 m above sea level, in Tanzania. The nearest listed city is Kilindoni, 114 km away.

KilindoniLindiIkwiririRuangwaKibitiBunguNyangaoMtwara

Topography around Kilwa Masoko

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

Within 3 km, the terrain around Kilwa Masoko has only modest variations in elevation — a maximum elevation change of 20 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 114 m; within 80 km, significant variations in elevation — a maximum elevation change of 559 m.

The land around Kilwa Masoko is covered by water (45%) and grassland (31%) within 3 km, water (57%) within 16 km, and water (42%) and trees (37%) within 80 km.

3 km
20 m
16 km
114 m
80 km
559 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Kilindoni 114 km · Lindi 121 km · Ikwiriri 123 km · Ruangwa 142 km · Kibiti 148 km · Bungu 152 km · Nyangao 159 km · Mtwara 166 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 Kilwa Masoko (-8.9251°, 39.5131°, elevation 23 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).