Nunukan weather in December

In December, Nunukan sees average daytime highs of 30°C and overnight lows near 24°C, with 197 mm of rain across 26.7 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 4% of the time in December, and the air most often feels miserable.

Daylight stretches from about 11 h 48 min at the start of December to 11 h 48 min by month's end. Set against the rest of the year, December is Nunukan's 12th-clearest and 7th-windiest month. For the whole year in context, see Nunukan's year-round climate.

Daytime high
30°
9th warmest
Overnight low
24°
8th coldest
Rainfall
197 mm
26.7 wet days
Daylight
11 h 48 min
6:13 AM – 5:58 PM
Cloud cover
84%
12th clearest
Wind
5 km/h
7th windiest
Solar energy
4.44 kWh/m²
Travel score
2.9
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Nunukan reaches about 30°C in the afternoon and slips back to 24°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 32°C. Set against its neighbours, December runs on par with November and on par with January.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024
313024

How December really feels in Nunukan

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
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.

Nunukan weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°16822.411.83.4
Feb30° / 24°12517.611.93.6
Mar31° / 24°15623.4123.2
Apr31° / 25°17226.512.12.8
May31° / 25°22229.912.22.5
Jun30° / 25°21728.212.22.7
Jul30° / 24°19828.612.22.8
Aug30° / 24°19228.512.12.8
Sep30° / 24°18627122.8
Oct30° / 24°22428.611.92.7
Nov30° / 24°1992811.82.6
Dec30° / 24°19726.711.82.9

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 8% of December, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11387
21387
31387
41387
51387
61387
71387
81387
91387
101387
111486
121486
131585
141486
151387
161387
171387
181387
191288
201288
211288
221189
231189
241189
251090
261090
271090
281090
291090
301189
311288

Chance of precipitation in December

Any precipitation

Nunukan gets around 197 mm of rain over 26.7 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 86% and peaks near 90% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
190
290
390
489
589
688
788
888
988
1087
1187
1287
1387
1487
1587
1687
1787
1887
1987
2087
2186
2286
2386
2485
2585
2684
2783
2883
2982
3081
3180

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 69% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
101981
202080
302179
402278
502278
602377
702476
802476
902575
1002575
1102674
1202674
1302773
1402872
1502872
1602971
1703070
1803169
1903169
2003268
2103367
2203466
2303565
2413663
2513762
2613861
2714059
2814158
2914356
3014554
3114752

Wind in December

Winds average 5 km/h in December.

Across December, daily wind ranges from about 4 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
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
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 11 h 48 min at the start of December to 11 h 48 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 6:06 AM to 6:20 AM, and sunset from 5:52 PM to 6:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:065:52
211.86:065:53
311.86:075:53
411.86:075:54
511.86:085:54
611.86:085:54
711.86:085:55
811.86:095:55
911.86:095:55
1011.86:105:56
1111.86:105:56
1211.86:115:57
1311.86:115:57
1411.86:125:58
1511.86:125:58
1611.86:135:58
1711.86:135:59
1811.86:145:59
1911.86:146:00
2011.86:156:00
2111.86:156:01
2211.86:166:01
2311.86:166:02
2411.86:166:02
2511.86:176:03
2611.86:176:03
2711.86:186:04
2811.86:186:04
2911.86:196:05
3011.86:196:05
3111.86:206:05

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.44 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.44 kWh/m² to a high of 5.35 kWh/m² in March across the year — December's 4.44 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.5Bright
314.5Bright
Planning a trip in December

Hazard calendar for Nunukan

In seasonPeak

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

Nunukan sits in the Pacific typhoon belt; the season peaks July–October.

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

Is December a good time to visit Nunukan?

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

2.9
Sightseeing
4th-best month of the year
4.1
Beach & pool
4th-best month of the year

December is a weaker month for outdoor sightseeing in Nunukan.

What to pack for Nunukan in December

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

In December, Nunukan sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 27 days see rain.

light clothesrain gear

Sea temperature near Nunukan in December

The nearest coast averages about 29°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 38 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
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Nunukan in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nunukan peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 17UV 15Dec 15UV 11
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar15Extreme
Apr14Extreme
May14Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep13Extreme
Oct13Extreme
Nov12Extreme
Dec11Extreme

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

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodSep 1716 µg/m³Jan 129 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar12Moderate
Apr12Moderate
May12Good
Jun11Good
Jul12Good
Aug14Moderate
Sep16Moderate
Oct15Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Nunukan?

Nunukan sits at 4.1°N, 117.7°E, 19 m above sea level, in Indonesia. The nearest listed city is Tawau, 29 km away.

Topography around Nunukan

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

Within 3 km, the terrain around Nunukan has only modest variations in elevation — a maximum elevation change of 110 m around an average of 18 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 432 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,504 m.

The land around Nunukan is covered by water (45%) and trees (37%) within 3 km, trees (43%), water (30%) and mangroves (22%) within 16 km, and trees (58%) and water (31%) within 80 km.

3 km
110 m
16 km
432 m
80 km
1,504 m
treesgrasslandartificial surfacesbare terrainwatermangroves
December weather nearby: Tawau 29 km · Tarakan 92 km · Semporna 113 km · Lahad Datu 124 km · Malinau 129 km · Tanjung Selor 148 km · Bandar Nabawan 169 km · Sandakan 196 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 Nunukan (4.1384°, 117.6507°, elevation 19 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).