Kupang weather in December

In December, Kupang sees average daytime highs of 31°C and overnight lows near 25°C, with 236 mm of rain across 24.5 wet days and about 12.6 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 32°C in the first days to 31°C by the end. The sky is clear or mostly clear about 8% of the time in December, and the air most often feels miserable.

Daylight stretches from about 12 h 36 min at the start of December to 12 h 36 min by month's end. Set against the rest of the year, December is Kupang's 10th-clearest and 11th-windiest month. For the whole year in context, see Kupang's year-round climate.

Daytime high
31°
8th warmest
Overnight low
25°
11th coldest
Rainfall
236 mm
24.5 wet days
Daylight
12 h 36 min
5:24 AM – 5:59 PM
Cloud cover
82%
10th clearest
Wind
8 km/h
11th windiest
Solar energy
5.54 kWh/m²
Travel score
2.8
out of 10

Kupang is administrative city in Kupang Regency, Indonesia.

Founded
1978

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 32°C in the first days to 31°C by the end.

A typical December day in Kupang reaches about 31°C in the afternoon and slips back to 25°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 34°C. Set against its neighbours, December runs about 3°C cooler than November and about 1°C warmer than January.

20°25°30°35°40°151015202531
Avg high (°C)Avg low (°C)
13326
23326
33226
43226
53226
63226
73226
83226
93226
103225
113225
123225
133225
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243125
253125
263125
273125
283125
293125
303125
313125

How December really feels in Kupang

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
8 feel dangerously hot (≥ 39°C)
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.

Kupang weather by month

How December compares with the rest of the year at a glance. December is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 25°27226.912.52.9
Feb30° / 25°24225.212.32.9
Mar31° / 25°19922.612.13.3
Apr32° / 25°7811.111.83.8
May32° / 25°233.711.54.5
Jun32° / 24°151.911.45.2
Jul31° / 23°4111.55.5
Aug32° / 23°20.511.75.2
Sep33° / 23°40.811.94.5
Oct34° / 25°183.512.23.6
Nov34° / 26°7310.512.53.0
Dec31° / 25°23624.512.62.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 80%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23070
33169
42971
52971
62872
72773
82575
92476
102476
112377
122377
132278
142278
152080
162080
171981
181783
191783
201684
211585
221486
231486
241486
251387
261288
271288
281189
291189
301189
311189

Chance of precipitation in December

Any precipitation

Kupang gets around 236 mm of rain over 24.5 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 77% and peaks near 83% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
167
268
370
471
573
674
775
876
977
1078
1178
1278
1378
1478
1578
1679
1779
1879
1979
2079
2179
2279
2379
2480
2580
2681
2781
2882
2982
3082
3183

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the miserable band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
123959
223662
323464
423266
513069
612970
712772
812673
912574
1012475
1102476
1202377
1302377
1402377
1502377
1602377
1702476
1802476
1902476
2002476
2102377
2202377
2302377
2402278
2502278
2602179
2702179
2802080
2902080
3001981
3101981

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 36 min at the start of December to 12 h 36 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 5:19 AM to 5:31 AM, and sunset from 5:52 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.65:195:52
212.65:195:52
312.65:195:53
412.65:205:53
512.65:205:54
612.65:205:54
712.65:215:55
812.65:215:55
912.65:215:56
1012.65:225:56
1112.65:225:57
1212.65:225:57
1312.65:235:58
1412.65:235:58
1512.65:245:59
1612.65:245:59
1712.65:246:00
1812.65:256:00
1912.65:256:01
2012.65:266:01
2112.65:266:02
2212.65:276:02
2312.65:276:03
2412.65:286:03
2512.65:286:04
2612.65:296:04
2712.65:296:05
2812.65:306:05
2912.65:306:06
3012.65:316:06
3112.65:316:06

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.54 kWh/m².

For context, solar energy here swings from a low near 5.04 kWh/m² to a high of 7.07 kWh/m² in October across the year — December's 5.54 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
36.0Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.7Bright
105.7Bright
115.7Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.4Bright
285.4Bright
295.4Bright
305.4Bright
315.4Bright
Planning a trip in December

Hazard calendar for Kupang

In seasonPeak

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

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

Kupang's monsoon runs December–March, 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 Kupang?

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

2.8
Sightseeing
12th-best month of the year
4.3
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Kupang.

What to pack for Kupang in December

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

In December, Kupang sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near Kupang 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 offshore is warmest in December at about 30°C and coldest in August near 27°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Tropical
Jun28Warm
Jul27Warm
Aug27Warm
Sep27Warm
Oct28Tropical
Nov29Tropical
Dec30Tropical

UV index in Kupang 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 Kupang peaks around February 20 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 20UV 16Jun 20UV 9
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun9Very high
Jul9Very high
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Kupang?

Kupang sits at 10.2°S, 123.6°E, 94 m above sea level, in Indonesia. The nearest listed city is Soe, 82 km away.

Topography around Kupang

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

Within 3 km, the terrain around Kupang has only modest variations in elevation — a maximum elevation change of 201 m around an average of 79 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 510 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,713 m.

The land around Kupang is covered by artificial surfaces (64%) within 3 km, water (43%), trees (27%) and grassland (23%) within 16 km, and water (63%) and trees (28%) within 80 km.

3 km
201 m
16 km
510 m
80 km
1,713 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Soe 82 km · Kefamenanu 125 km · Atambua 184 km · Lewoleba 201 km · Suai 204 km · Maliana 220 km · Maumere 231 km · Atsabe 240 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 Kupang (-10.1708°, 123.6069°, elevation 94 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).