Ilula weather in December

In December, Ilula sees average daytime highs of 24°C and overnight lows near 15°C, with 187 mm of rain across 22.8 wet days and about 12.4 hours of daylight. It is the 2nd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 24°C through the month. The sky is clear or mostly clear about 15% of the time in December, and the air most often feels humid.

Daylight stretches from about 12 h 24 min at the start of December to 12 h 24 min by month's end. Set against the rest of the year, December is Ilula's 8th-clearest and 9th-windiest month. For the whole year in context, see Ilula's year-round climate.

Daytime high
24°
2nd warmest
Overnight low
15°
9th coldest
Rainfall
187 mm
22.8 wet days
Daylight
12 h 24 min
6:19 AM – 6:45 PM
Cloud cover
70%
8th clearest
Wind
8 km/h
9th windiest
Solar energy
5.81 kWh/m²
Travel score
4.9
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 24°C through the month.

A typical December day in Ilula reaches about 24°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 22°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)
12415
22415
32415
42415
52415
62415
72415
82415
92415
102415
112415
122415
132415
142415
152415
162415
172415
182415
192415
202415
212415
222415
232415
242415
252415
262415
272415
282415
292315
302315
312315

Ilula weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 15°27426.212.44.2
Feb23° / 15°24622.112.34.4
Mar23° / 15°19024.412.14.4
Apr21° / 15°7318.611.85.1
May20° / 13°216.411.76.9
Jun19° / 10°41.311.67.5
Jul19° / 10°20.611.67.6
Aug20° / 10°40.911.77.8
Sep22° / 11°41.3128.2
Oct23° / 12°175.112.27.9
Nov24° / 14°6413.212.46.5
Dec24° / 15°18722.812.44.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 64%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14852
24753
34753
44654
54555
64456
74456
84357
94258
104159
114060
124060
133862
143763
153664
163565
173565
183268
193268
203169
213169
223070
233070
242872
252872
262773
272773
282674
292575
302575
312476

Chance of precipitation in December

Any precipitation

Ilula gets around 187 mm of rain over 22.8 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 73% and peaks near 80% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
157
258
359
460
562
663
765
866
968
1070
1171
1273
1374
1475
1576
1677
1778
1879
1979
2079
2180
2280
2380
2480
2580
2680
2780
2880
2980
3080
3180

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 54% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
12049310
21949320
31848330
41748350
51647360
61547380
71446400
81346410
91245430
101144450
111043470
12941490
13940510
14838540
15837550
16735580
17734590
18732610
19731620
20730630
21729640
22628660
23627670
24626680
25626680
26625690
27625690
28524710
29524710
30524710
31424711

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 24 min at the start of December to 12 h 24 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 6:13 AM to 6:26 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)
112.46:136:38
212.46:136:39
312.46:146:39
412.46:146:39
512.46:146:40
612.46:156:40
712.46:156:41
812.46:156:41
912.46:166:42
1012.46:166:42
1112.46:176:43
1212.46:176:43
1312.46:176:44
1412.46:186:44
1512.46:186:45
1612.46:196:45
1712.46:196:46
1812.46:206:46
1912.46:206:47
2012.46:206:47
2112.46:216:48
2212.46:216:48
2312.46:226:49
2412.46:226:49
2512.46:236:50
2612.46:236:50
2712.46:246:51
2812.46:246:51
2912.46:256:51
3012.46:256:52
3112.46:266:52

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.81 kWh/m².

For context, solar energy here swings from a low near 5.02 kWh/m² to a high of 6.93 kWh/m² in October across the year — December's 5.81 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.3Intense
26.2Intense
36.2Intense
46.2Intense
56.2Intense
66.1Intense
76.1Intense
86.0Intense
96.0Intense
106.0Bright
115.9Bright
125.9Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in December

Hazard calendar for Ilula

In seasonPeak

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

Ilula's monsoon runs December–March, when most of the year's rain falls.

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

Is December a good time to visit Ilula?

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

4.9
Sightseeing
9th-best month of the year
4.1
Beach & pool
4th-best month of the year

December is a reasonable time to visit Ilula for sightseeing.

What to pack for Ilula in December

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

In December, Ilula sees daytime highs around 24°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 23 days see rain.

rain gearlight clothessun protection

UV index in Ilula 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 Ilula peaks around March 11 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 11UV 16Jun 18UV 10
UV index (midday)Level
Jan13Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in Ilula 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 Ilula is worst in September — around 21 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (May, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1920 µg/m³May 247 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar10Good
Apr8Good
May7Good
Jun7Good
Jul10Good
Aug15Moderate
Sep21Moderate
Oct18Moderate
Nov13Moderate
Dec8Good
Location & terrain

Where is Ilula?

Ilula sits at 7.7°S, 36.0°E, 1,374 m above sea level, in Tanzania. The nearest listed city is Iringa, 38 km away.

IfakaraKidatuRuahaKidodiMafingaMikumi

Topography around Ilula

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

Within 3 km, the terrain around Ilula has significant variations in elevation — a maximum elevation change of 543 m around an average of 1,430 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,577 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,299 m.

The land around Ilula is covered by cropland (39%) and shrubs (31%) within 3 km, shrubs (34%), trees (26%) and cropland (22%) within 16 km, and trees (38%) and shrubs (34%) within 80 km.

3 km
543 m
16 km
1,577 m
80 km
2,299 m
treesshrubsgrasslandcroplandartificial surfaceswater
December weather nearby: Iringa 38 km · Izazi 63 km · Ifakara 87 km · Kidatu 101 km · Ruaha 104 km · Kidodi 107 km · Mafinga 107 km · Mikumi 109 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 Ilula (-7.6766°, 36.0366°, elevation 1,374 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).