Ungaran weather in December

In December, Ungaran sees average daytime highs of 29°C and overnight lows near 22°C, with 467 mm of rain across 29.2 wet days and about 12.4 hours of daylight. It is the 9th-warmest and 3rd-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 1% of the time in December, and the air most often feels oppressive.

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 Ungaran's 11th-clearest and 11th-windiest month. For the whole year in context, see Ungaran's year-round climate.

Daytime high
29°
9th warmest
Overnight low
22°
8th coldest
Rainfall
467 mm
29.2 wet days
Daylight
12 h 24 min
5:22 AM – 5:47 PM
Cloud cover
91%
11th clearest
Wind
4 km/h
11th windiest
Solar energy
4.62 kWh/m²
Travel score
2.9
out of 10

Ungaran is regency capital of Semarang Regency, Indonesia.

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 Ungaran reaches about 29°C in the afternoon and slips back to 22°C overnight — a 7°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 about 1°C cooler than November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162922
172922
182922
192922
202922
212922
222922
232922
242922
252922
262922
272922
282922
292922
302922
312922

How December really feels in Ungaran

Once humidity and wind are folded in, December averages 23 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
23
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.

Ungaran weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 22°50230.212.43.0
Feb28° / 22°47327.812.22.9
Mar29° / 22°43030.1122.8
Apr29° / 22°2762711.83.0
May30° / 22°12618.911.74.1
Jun30° / 21°7612.111.64.9
Jul30° / 21°488.711.65.4
Aug30° / 21°325.211.85.6
Sep31° / 21°537.3124.8
Oct31° / 22°14816.512.23.8
Nov30° / 22°31325.312.33.0
Dec29° / 22°46729.212.42.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 4% of December, with mostly cloudy or overcast conditions the remaining 96%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1694
2694
3595
4595
5595
6595
7595
8496
9496
10496
11496
12496
13496
14496
15496
16496
17496
18397
19397
20397
21496
22496
23496
24496
25496
26496
27496
28496
29595
30595
31595

Chance of precipitation in December

Any precipitation

Ungaran gets around 467 mm of rain over 29.2 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 94% and peaks near 95% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
292
392
493
593
693
794
894
994
1094
1194
1294
1394
1494
1595
1694
1794
1894
1994
2094
2194
2294
2394
2494
2594
2694
2794
2894
2994
3094
3194

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 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
1694
2694
3694
4694
5694
6694
7694
8694
9595
10595
11694
12694
13694
14694
15694
16694
17694
18694
19694
20793
21793
22793
23793
24793
25793
26793
27793
28793
29793
30793
31694

Wind in December

Winds average 4 km/h in December.

Across December, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

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 5:17 AM to 5:29 AM, and sunset from 5:40 PM to 5:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:175:40
212.45:175:40
312.45:175:41
412.45:185:41
512.45:185:42
612.45:185:42
712.45:195:43
812.45:195:43
912.45:195:43
1012.45:205:44
1112.45:205:44
1212.45:205:45
1312.45:215:45
1412.45:215:46
1512.45:225:46
1612.45:225:47
1712.45:235:47
1812.45:235:48
1912.45:245:48
2012.45:245:49
2112.45:245:49
2212.45:255:50
2312.45:255:50
2412.45:265:51
2512.45:265:51
2612.45:275:52
2712.45:275:52
2812.45:285:53
2912.45:285:53
3012.45:295:53
3112.45:295:54

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.62 kWh/m².

For context, solar energy here swings from a low near 4.52 kWh/m² to a high of 6.02 kWh/m² in September across the year — December's 4.62 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.7Bright
94.7Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in December

Hazard calendar for Ungaran

In seasonPeak

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

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

Ungaran's monsoon runs November–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 Ungaran?

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

2.9
Sightseeing
10th-best month of the year
3.8
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Ungaran.

What to pack for Ungaran in December

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

In December, Ungaran sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

Sea temperature near Ungaran in December

The nearest coast averages about 30°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 30 km away) is warmest in May at about 30°C and coldest in February near 29°C.

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

28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Ungaran 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 Ungaran peaks around March 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 14 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highVery highExtremeVery highExtremeMar 16UV 14Jun 14UV 7
UV index (midday)Level
Jan11Extreme
Feb12Extreme
Mar14Extreme
Apr11Extreme
May8Very high
Jun7High
Jul10Very high
Aug11Extreme
Sep12Extreme
Oct12Extreme
Nov8Very high
Dec12Extreme

Air quality in Ungaran 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 Ungaran is worst in April — around 58 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (September, 34 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyPoorModeratePoorApr 2158 µg/m³Sep 1134 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb46Poor
Mar54Poor
Apr58Unhealthy
May57Unhealthy
Jun51Poor
Jul42Poor
Aug35Moderate
Sep34Moderate
Oct37Poor
Nov42Poor
Dec42Poor
Location & terrain

Where is Ungaran?

Ungaran sits at 7.1°S, 110.4°E, 351 m above sea level, in Indonesia. The nearest listed city is Ambarawa, 14 km away.

Topography around Ungaran

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

Within 3 km, the terrain around Ungaran has significant variations in elevation — a maximum elevation change of 512 m around an average of 387 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,022 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,291 m.

The land around Ungaran is covered by trees (54%) and artificial surfaces (35%) within 3 km, trees (64%) within 16 km, and trees (51%), cropland (20%) and water (20%) within 80 km.

3 km
512 m
16 km
2,022 m
80 km
3,291 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Ambarawa 14 km · Semarang 16 km · Mranggen 18 km · Salatiga 23 km · Demak 38 km · Weleri 42 km · Magelang 42 km · Mertoyudan 47 km

Indonesia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 29% of US
price level, 2025
GDP per capita
$5,060
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
30%
of population, 2024
Homicide rate
0.3
per 100k, 2022
Road deaths
11.3
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 471
Religion
Muslim 87%Protestant 8%Roman Catholic 3%Hindu 2%

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 Ungaran (-7.1397°, 110.405°, elevation 351 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).