Pontianak weather in December

In December, Pontianak sees average daytime highs of 29°C and overnight lows near 24°C, with 364 mm of rain across 28.2 wet days and about 12 hours of daylight. It is the 12th-warmest and 2nd-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 0% of the time in December, and the air most often feels miserable.

Daylight stretches from about 12 hours at the start of December to 12 hours by month's end. Set against the rest of the year, December is Pontianak's 12th-clearest and 4th-windiest month. For the whole year in context, see Pontianak's year-round climate.

Daytime high
29°
12th warmest
Overnight low
24°
4th coldest
Rainfall
364 mm
28.2 wet days
Daylight
12 hours
5:39 AM – 5:39 PM
Cloud cover
92%
12th clearest
Wind
8 km/h
4th windiest
Solar energy
4.2 kWh/m²
Travel score
3.0
out of 10

Pontianak is city in West Kalimantan Province, Indonesia.

Density
6,364/km²
people per km²
Founded
1771

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 Pontianak reaches about 29°C in the afternoon and slips back to 24°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°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)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182924
192924
202924
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924
312924

How December really feels in Pontianak

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.

Pontianak weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 24°25724.8123.4
Feb29° / 24°17119.6123.6
Mar30° / 25°19923.1123.3
Apr30° / 25°25627.4122.8
May30° / 25°22524.9123.1
Jun30° / 25°17019.8123.6
Jul30° / 25°14917.9123.9
Aug31° / 25°14217.1123.8
Sep30° / 25°19120.7123.4
Oct30° / 24°30927.6123.0
Nov29° / 24°38629122.8
Dec29° / 24°36428.2123.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 3% of December, with mostly cloudy or overcast conditions the remaining 97%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5298
6298
7496
8496
9496
10496
11496
12496
13496
14496
15496
16496
17496
18496
19496
20397
21397
22298
23298
24298
25298
26298
27397
28397
29397
30397
31496

Chance of precipitation in December

Any precipitation

Pontianak gets around 364 mm of rain over 28.2 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 91% and peaks near 96% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
196
296
396
495
594
694
793
893
992
1092
1191
1291
1390
1490
1590
1690
1790
1890
1990
2090
2190
2290
2389
2489
2589
2689
2789
2889
2988
3088
3187

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
13961
23961
34060
44060
54159
64159
74258
84258
94357
104357
114456
124555
134555
144654
154753
164852
174852
184951
195050
205149
215149
225248
235347
245347
255446
265446
275545
285545
295545
305545
315644

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 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 hours at the start of December to 12 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 5:32 AM to 5:46 AM, and sunset from 5:33 PM to 5:46 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.05:325:33
212.05:335:33
312.05:335:33
412.05:345:34
512.05:345:34
612.05:345:34
712.05:355:35
812.05:355:35
912.05:365:36
1012.05:365:36
1112.05:375:37
1212.05:375:37
1312.05:375:38
1412.05:385:38
1512.05:385:38
1612.05:395:39
1712.05:395:39
1812.05:405:40
1912.05:405:40
2012.05:415:41
2112.05:415:41
2212.05:425:42
2312.05:425:42
2412.05:435:43
2512.05:435:43
2612.05:435:44
2712.05:445:44
2812.05:445:45
2912.05:455:45
3012.05:455:45
3112.05:465:46

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.2 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.2 kWh/m² to a high of 5.37 kWh/m² in August across the year — December's 4.2 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.1Bright
24.1Bright
34.1Bright
44.1Bright
54.1Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.3Bright
174.3Bright
184.3Bright
194.3Bright
204.3Bright
214.3Bright
224.3Bright
234.3Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.3Bright
294.3Bright
304.3Bright
314.4Bright
Planning a trip in December

Is December a good time to visit Pontianak?

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

3.0
Sightseeing
9th-best month of the year
3.9
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Pontianak.

What to pack for Pontianak in December

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

In December, Pontianak sees daytime highs around 29°C and nights near 24°C. Pack light clothes and rain gear. About 28 days see rain.

light clothesrain gear

Sea temperature near Pontianak 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 25 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
Jul30Tropical
Aug29Tropical
Sep29Tropical
Oct30Tropical
Nov30Tropical
Dec29Tropical

UV index in Pontianak 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 Pontianak peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 13 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 18UV 15Jul 13UV 11
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar15Extreme
Apr14Extreme
May13Extreme
Jun11Extreme
Jul10Extreme
Aug13Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Pontianak 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 Pontianak is worst in September — around 72 µg/m³ PM2.5 (unhealthy), about 5.0× the cleanest month (December, 14 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecModerateUnhealthyModerateSep 1369 µg/m³Dec 2114 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb20Moderate
Mar22Moderate
Apr19Moderate
May17Moderate
Jun16Moderate
Jul26Moderate
Aug54Poor
Sep72Unhealthy
Oct30Moderate
Nov16Moderate
Dec14Moderate
Location & terrain

Where is Pontianak?

Pontianak sits at 0.0°S, 109.3°E, 2 m above sea level, in Indonesia. The nearest listed city is Sungai Raya, 94 km away.

Topography around Pontianak

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

Within 3 km, the terrain around Pontianak has only modest variations in elevation — a maximum elevation change of 17 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 27 m; within 80 km, large variations in elevation — a maximum elevation change of 827 m.

The land around Pontianak is covered by artificial surfaces (78%) within 3 km, trees (59%) and grassland (25%) within 16 km, and trees (59%) and water (31%) within 80 km.

3 km
17 m
16 km
27 m
80 km
827 m
treesgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Sungai Raya 94 km · Bengkayang 97 km · Singkawang 111 km · Pemangkat 139 km · Kota Sambas 155 km · Tebedu 165 km · Bau 185 km · Serian 192 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 Pontianak (-0.0319°, 109.325°, elevation 2 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. 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).