Bintuni weather in December

In December, Bintuni sees average daytime highs of 30°C and overnight lows near 23°C, with 262 mm of rain across 29.2 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 5th-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 1% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 12 h 06 min at the start of December to 12 h 06 min by month's end. Set against the rest of the year, December is Bintuni's 11th-clearest and 2nd-windiest month. For the whole year in context, see Bintuni's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
23°
11th coldest
Rainfall
262 mm
29.2 wet days
Daylight
12 h 06 min
5:58 AM – 6:06 PM
Cloud cover
90%
11th clearest
Wind
5 km/h
2nd windiest
Solar energy
4.96 kWh/m²
Travel score
2.5
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 Bintuni reaches about 30°C in the afternoon and slips back to 23°C overnight — a 7°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)
13123
23123
33123
43123
53123
63123
73123
83123
93123
103123
113123
123123
133123
143123
153123
163123
173123
183023
193023
203023
213023
223023
233023
243023
253023
263023
273023
283023
293023
303023
313023

How December really feels in Bintuni

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.

Bintuni weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 23°2812912.12.6
Feb30° / 23°2782612.12.6
Mar30° / 23°31029.5122.6
Apr30° / 23°31028.9122.6
May30° / 24°24427.411.92.9
Jun30° / 23°24326.211.93.1
Jul29° / 23°20924.111.93.5
Aug30° / 23°19622.311.93.6
Sep30° / 23°21524.2123.2
Oct31° / 23°20924.9123.0
Nov31° / 23°21226.112.12.7
Dec30° / 23°26229.212.12.5

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 95%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2595
3595
4595
5595
6595
7595
8694
9694
10694
11694
12694
13694
14694
15694
16694
17694
18694
19694
20595
21595
22496
23496
24397
25397
26397
27397
28397
29397
30397
31496

Chance of precipitation in December

Any precipitation

Bintuni gets around 262 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 (%)
192
292
393
493
593
693
793
894
994
1094
1194
1294
1394
1494
1594
1694
1794
1894
1994
2094
2194
2295
2395
2495
2595
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 59% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
15941
25842
35743
45743
55644
65644
75644
85644
95644
105644
115743
125743
135842
145941
156040
166040
176139
186139
196238
206238
216238
226139
236139
246139
256139
266040
276040
286040
296040
306040
316040

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 06 min at the start of December to 12 h 06 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 5:52 AM to 6:05 AM, and sunset from 5:59 PM to 6:13 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.15:525:59
212.15:535:59
312.15:536:00
412.15:536:00
512.15:546:01
612.15:546:01
712.15:556:02
812.15:556:02
912.15:556:02
1012.15:566:03
1112.15:566:03
1212.15:576:04
1312.15:576:04
1412.15:586:05
1512.15:586:05
1612.15:586:06
1712.15:596:06
1812.15:596:07
1912.16:006:07
2012.16:006:08
2112.16:016:08
2212.16:016:09
2312.16:026:09
2412.16:026:09
2512.16:036:10
2612.16:036:10
2712.16:046:11
2812.16:046:11
2912.16:056:12
3012.16:056:12
3112.16:056:13

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.96 kWh/m².

For context, solar energy here swings from a low near 4.15 kWh/m² to a high of 5.26 kWh/m² in October across the year — December's 4.96 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in December

Is December a good time to visit Bintuni?

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

2.5
Sightseeing
12th-best month of the year
3.6
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Bintuni.

What to pack for Bintuni in December

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

In December, Bintuni sees daytime highs around 30°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

Sea temperature near Bintuni 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 32 km away) is warmest in April at about 30°C and coldest in August near 28°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
Jan30Tropical
Feb30Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul29Tropical
Aug28Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Bintuni 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 Bintuni peaks around March 13 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 13UV 16Jul 11UV 11
UV index (midday)Level
Jan15Extreme
Feb16Extreme
Mar16Extreme
Apr15Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep14Extreme
Oct15Extreme
Nov13Extreme
Dec13Extreme
Location & terrain

Where is Bintuni?

Bintuni sits at 2.1°S, 133.5°E, 12 m above sea level, in Indonesia. The nearest listed city is Ransiki, 98 km away.

SorongBiakWaisai

Topography around Bintuni

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

Within 3 km, the terrain around Bintuni has only modest variations in elevation — a maximum elevation change of 226 m around an average of 51 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 502 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,799 m.

The land around Bintuni is covered by trees (55%) and mangroves (34%) within 3 km, trees (54%) and mangroves (34%) within 16 km, and trees (65%) and water (21%) within 80 km.

3 km
226 m
16 km
502 m
80 km
2,799 m
treesgrasslandartificial surfaceswatermangroves
December weather nearby: Ransiki 98 km · Manokwari 151 km · Fakfak 164 km · Teminabuan 184 km · Nabire 260 km · Sorong 286 km · Biak 303 km · Waisai 395 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 Bintuni (-2.1097°, 133.5246°, elevation 12 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).