Maswa weather in December

In December, Maswa sees average daytime highs of 28°C and overnight lows near 18°C, with 148 mm of rain across 18.4 wet days and about 12.2 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°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 06 min at the start of December to 12 h 12 min by month's end. Set against the rest of the year, December is Maswa's 9th-clearest and 12th-windiest month. For the whole year in context, see Maswa's year-round climate.

Daytime high
28°
11th warmest
Overnight low
18°
7th coldest
Rainfall
148 mm
18.4 wet days
Daylight
12 h 12 min
6:36 AM – 6:45 PM
Cloud cover
70%
9th clearest
Wind
7 km/h
12th windiest
Solar energy
5.69 kWh/m²
Travel score
4.7
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical December day in Maswa reaches about 28°C in the afternoon and slips back to 18°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 31°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12919
22919
32819
42819
52819
62819
72819
82819
92819
102818
112818
122818
132818
142818
152818
162818
172818
182818
192818
202818
212818
222818
232818
242818
252818
262818
272818
282818
292818
302818
312818

Maswa weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 18°11816.112.15.0
Feb29° / 19°9213.612.14.7
Mar29° / 19°13417124.5
Apr28° / 18°13517.411.94.8
May28° / 18°43811.96.0
Jun29° / 18°71.911.86.4
Jul29° / 18°30.511.96.5
Aug30° / 18°112.411.95.9
Sep31° / 19°204.3125.1
Oct31° / 19°569.712.14.5
Nov29° / 19°1281612.14.4
Dec28° / 18°14818.412.24.7

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 20% of December, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
23070
33070
43070
53169
63169
73169
83169
93268
103268
113367
123367
133367
143367
153367
163367
173466
183466
193466
203466
213565
223565
233466
243565
253565
263565
273565
283664
293763
303763
313763

Chance of precipitation in December

Any precipitation

Maswa gets around 148 mm of rain over 18.4 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 59% and peaks near 62% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
157
257
358
458
559
659
760
860
960
1061
1161
1262
1362
1462
1562
1662
1762
1861
1961
2061
2160
2260
2359
2459
2558
2657
2757
2856
2956
3056
3155

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 66% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1627625
2627616
3626626
4626626
5725626
6725626
7724627
8723637
9723637
10723637
11722647
12722647
13721657
14721657
15721666
16721666
17621676
18621676
19621676
20621676
21621676
22621676
23621676
24621676
25621676
26621676
27620686
28620686
29620686
30620686
31520687

Wind in December

Winds average 7 km/h in December, the calmest month.

Across December, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 06 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 6 minutes over December. Sunrise moves from 6:29 AM to 6:43 AM, and sunset from 6:38 PM to 6:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:296:38
212.16:306:39
312.16:306:39
412.16:316:39
512.16:316:40
612.16:316:40
712.16:326:41
812.26:326:41
912.26:336:42
1012.26:336:42
1112.26:336:43
1212.26:346:43
1312.26:346:43
1412.26:356:44
1512.26:356:44
1612.26:366:45
1712.26:366:45
1812.26:376:46
1912.26:376:46
2012.26:376:47
2112.26:386:47
2212.26:386:48
2312.26:396:48
2412.26:396:49
2512.26:406:49
2612.26:406:50
2712.26:416:50
2812.26:416:50
2912.26:426:51
3012.26:426:51
3112.26:436:52

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 5.52 kWh/m² to a high of 6.39 kWh/m² in February across the year — December's 5.69 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.8Bright
315.8Bright
Planning a trip in December

Hazard calendar for Maswa

In seasonPeak

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

Maswa'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 Maswa?

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

4.7
Sightseeing
8th-best month of the year
5.5
Beach & pool
11th-best month of the year

December is a reasonable time to visit Maswa for sightseeing.

What to pack for Maswa in December

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

In December, Maswa sees daytime highs around 28°C and nights near 18°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

UV index in Maswa 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 Maswa peaks around March 14 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 14UV 16Jun 18UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun10Very high
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec12Extreme

Air quality in Maswa 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 Maswa is worst in January — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (May, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodModerateJan 2018 µg/m³May 1610 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb17Moderate
Mar15Moderate
Apr12Good
May10Good
Jun13Moderate
Jul13Moderate
Aug12Moderate
Sep12Good
Oct11Good
Nov12Good
Dec14Moderate
Location & terrain

Where is Maswa?

Maswa sits at 2.7°S, 34.0°E, 1,310 m above sea level, in Tanzania. The nearest listed city is Nyakabindi, 6.0 km away.

MalampakaKihangara

Topography around Maswa

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

Within 3 km, the terrain around Maswa has only modest variations in elevation — a maximum elevation change of 96 m around an average of 1,304 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 217 m; within 80 km, large variations in elevation — a maximum elevation change of 883 m.

The land around Maswa is covered by cropland (89%) within 3 km, cropland (86%) within 16 km, and cropland (57%) and grassland (29%) within 80 km.

3 km
96 m
16 km
217 m
80 km
883 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Nyakabindi 6.0 km · Bariadi 13 km · Kisesa 48 km · Shanwa 59 km · Nyalikungu 60 km · Magu 61 km · Malampaka 71 km · Kihangara 71 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 Maswa (-2.6833°, 33.9833°, elevation 1,310 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).