Hedaru weather in December

In December, Hedaru sees average daytime highs of 29°C and overnight lows near 20°C, with 79 mm of rain across 14.9 wet days and about 12.3 hours of daylight. It is the 4th-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 29% of the time in December, and the air most often feels muggy.

Daylight stretches from about 12 h 12 min at the start of December to 12 h 18 min by month's end. Set against the rest of the year, December is Hedaru's 3rd-clearest and 10th-windiest month. For the whole year in context, see Hedaru's year-round climate.

Daytime high
29°
4th warmest
Overnight low
20°
9th coldest
Rainfall
79 mm
14.9 wet days
Daylight
12 h 18 min
6:17 AM – 6:32 PM
Cloud cover
57%
3rd clearest
Wind
5 km/h
10th windiest
Solar energy
5.87 kWh/m²
Travel score
5.0
out of 10

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 Hedaru reaches about 29°C in the afternoon and slips back to 20°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12919
22919
32919
42919
52919
62920
72920
82920
92920
102920
112920
122920
132920
142920
152920
162920
172920
182920
192920
202920
212920
222920
232920
242920
252920
262920
272920
282919
292919
302919
312919

Hedaru weather by month

How December compares with the rest of the year at a glance. December is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°549.612.25.3
Feb30° / 20°488.212.14.9
Mar30° / 20°10216.3124.4
Apr27° / 20°18222.511.94.4
May25° / 18°12415.211.85.9
Jun25° / 16°17411.77.5
Jul24° / 15°112.511.87.8
Aug25° / 15°142.911.97.6
Sep27° / 16°143.2127.4
Oct28° / 18°638.712.16.3
Nov28° / 19°9014.312.25.2
Dec29° / 20°7914.912.35.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 30% of December, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
46040
55941
65941
75941
85941
95941
105842
115842
125842
135941
145941
155842
165842
175842
185743
195743
205743
215743
225743
235743
245842
255941
265941
275941
285941
296040
306040
316040

Chance of precipitation in December

Any precipitation

Hedaru gets around 79 mm of rain over 14.9 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 48% and peaks near 54% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
152
252
353
453
554
654
754
854
954
1054
1154
1253
1353
1452
1552
1651
1750
1849
1948
2047
2145
2244
2343
2442
2541
2640
2740
2839
2938
3037
3136

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the muggy band about 55% of days. Sticky, muggy-or-worse air turns up on roughly 55% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)
114257
214257
314158
414158
514059
624058
724058
823959
923860
1033859
1133859
1233760
1333760
1443759
1543759
1643759
1743858
1843957
1943957
2044056
2154154
2254253
2354352
2454451
2554451
2664549
2764648
2864647
2974746
3074745
3174844

Wind in December

Winds average 5 km/h in December.

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 18 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 6:11 AM to 6:24 AM, and sunset from 6:25 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:116:25
212.26:116:26
312.26:126:26
412.26:126:27
512.26:126:27
612.26:136:28
712.36:136:28
812.36:136:29
912.36:146:29
1012.36:146:29
1112.36:156:30
1212.36:156:30
1312.36:156:31
1412.36:166:31
1512.36:166:32
1612.36:176:32
1712.36:176:33
1812.36:186:33
1912.36:186:34
2012.36:196:34
2112.36:196:35
2212.36:206:35
2312.36:206:36
2412.36:206:36
2512.36:216:37
2612.36:216:37
2712.36:226:38
2812.36:226:38
2912.36:236:38
3012.36:236:39
3112.36:246:39

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.87 kWh/m².

For context, solar energy here swings from a low near 4.19 kWh/m² to a high of 6.55 kWh/m² in February across the year — December's 5.87 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.8Bright
115.8Bright
125.8Bright
135.8Bright
145.9Bright
155.9Bright
165.9Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
226.0Bright
236.0Bright
246.0Bright
256.0Intense
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.1Intense
316.1Intense
Planning a trip in December

Hazard calendar for Hedaru

In seasonPeak

None of Hedaru's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Hedaru's rainy season runs March–May, 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 Hedaru?

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

5.0
Sightseeing
9th-best month of the year
6.3
Beach & pool
8th-best month of the year

December is a reasonable time to visit Hedaru for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Hedaru in December

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

In December, Hedaru sees daytime highs around 29°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 15 days see rain.

light clothesrain gearsun protection

UV index in Hedaru 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 Hedaru peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Jun 19UV 10
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar15Extreme
Apr15Extreme
May12Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep13Extreme
Oct14Extreme
Nov13Extreme
Dec13Extreme

Air quality in Hedaru 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 Hedaru is worst in July — around 16 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateGoodJul 1616 µg/m³Oct 219 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb14Moderate
Mar11Good
Apr10Good
May11Good
Jun14Moderate
Jul16Moderate
Aug13Moderate
Sep11Good
Oct9Good
Nov9Good
Dec13Moderate
Location & terrain

Where is Hedaru?

Hedaru sits at 4.5°S, 37.9°E, 640 m above sea level, in Tanzania. The nearest listed city is Makuyuni, 34 km away.

LembeniUsangiKorogwe

Topography around Hedaru

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

Within 3 km, the terrain around Hedaru has significant variations in elevation — a maximum elevation change of 416 m around an average of 662 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,658 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,131 m.

The land around Hedaru is covered by cropland (37%) and grassland (32%) within 3 km, shrubs (61%) within 16 km, and shrubs (68%) within 80 km.

3 km
416 m
16 km
1,658 m
80 km
2,131 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: Makuyuni 34 km · Mazinde 48 km · Matui 51 km · Same 52 km · Lushoto 53 km · Lembeni 86 km · Usangi 93 km · Korogwe 97 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 Hedaru (-4.5°, 37.9°, elevation 640 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).