Banjarbaru weather in December

In December, Banjarbaru sees average daytime highs of 30°C and overnight lows near 24°C, with 390 mm of rain across 29.7 wet days and about 12.2 hours of daylight. It is the 11th-warmest and 1st-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 0% of the time in December, and the air most often feels miserable.

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

Daytime high
30°
11th warmest
Overnight low
24°
7th coldest
Rainfall
390 mm
29.7 wet days
Daylight
12 h 12 min
6:11 AM – 6:23 PM
Cloud cover
95%
12th clearest
Wind
6 km/h
4th windiest
Solar energy
4.14 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 Banjarbaru 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 28°C and 32°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)
13124
23124
33124
43124
53124
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 Banjarbaru

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.

Banjarbaru weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°33728.912.22.6
Feb31° / 24°26725.112.12.6
Mar31° / 24°29427.4122.6
Apr31° / 24°28427.311.92.5
May32° / 24°18521.911.83.0
Jun31° / 24°13818.111.83.5
Jul31° / 23°10013.511.84.0
Aug32° / 23°628.911.93.9
Sep33° / 23°749123.5
Oct33° / 24°17216.912.12.9
Nov31° / 24°3042712.22.4
Dec30° / 24°39029.712.22.5

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 1% of December, with mostly cloudy or overcast conditions the remaining 99%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1397
2298
3298
4298
5298
6298
7298
8298
9298
10199
11199
12199
13199
14199
15199
16199
17199
18199
19199
20199
21199
22199
23199
240100
250100
260100
270100
280100
290100
30199
31199

Chance of precipitation in December

Any precipitation

Banjarbaru gets around 390 mm of rain over 29.7 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 96% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
196
296
396
496
596
696
796
896
996
1096
1196
1297
1397
1497
1597
1697
1797
1897
1997
2097
2196
2296
2396
2496
2596
2696
2796
2896
2996
3095
3195

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 79% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
11981
21981
31981
41981
51981
62080
72080
82080
92080
102179
112179
122179
132179
142278
152278
162278
172278
182179
192179
202179
212179
222179
232179
242179
252179
262179
272278
282278
292377
302476
312476

Wind in December

Winds average 6 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 12 h 12 min at the start of December to 12 h 12 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 6:05 AM to 6:18 AM, and sunset from 6:16 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.26:056:16
212.26:056:16
312.26:066:17
412.26:066:17
512.26:066:18
612.26:076:18
712.26:076:19
812.26:076:19
912.26:086:19
1012.26:086:20
1112.26:096:20
1212.26:096:21
1312.26:106:21
1412.26:106:22
1512.26:106:22
1612.26:116:23
1712.26:116:23
1812.26:126:24
1912.26:126:24
2012.26:136:25
2112.26:136:25
2212.26:146:26
2312.26:146:26
2412.26:156:27
2512.26:156:27
2612.26:166:27
2712.26:166:28
2812.26:166:28
2912.26:176:29
3012.26:176:29
3112.26:186:30

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.14 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.14 kWh/m² to a high of 5.7 kWh/m² in September across the year — December's 4.14 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.3Bright
34.3Bright
44.3Bright
54.3Bright
64.3Bright
74.3Bright
84.3Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.1Bright
214.1Bright
224.1Bright
234.1Bright
244.1Bright
254.1Bright
264.1Bright
274.1Bright
284.1Bright
294.2Bright
304.2Bright
314.2Bright
Planning a trip in December

Is December a good time to visit Banjarbaru?

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

2.5
Sightseeing
10th-best month of the year
3.5
Beach & pool
12th-best month of the year

December is a weaker month for outdoor sightseeing in Banjarbaru.

What to pack for Banjarbaru in December

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

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

light clothesrain gear

Sea temperature near Banjarbaru 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 31 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
Jan29Tropical
Feb29Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Banjarbaru 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 Banjarbaru peaks around February 16 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 23 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 16UV 15Jun 23UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun10Extreme
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov13Extreme
Dec12Extreme

Air quality in Banjarbaru 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 Banjarbaru is worst in September — around 29 µg/m³ PM2.5 (moderate), about 2.4× the cleanest month (January, 12 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 2329 µg/m³Jan 1412 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb13Moderate
Mar14Moderate
Apr13Moderate
May13Moderate
Jun14Moderate
Jul14Moderate
Aug17Moderate
Sep29Moderate
Oct29Moderate
Nov20Moderate
Dec13Moderate
Location & terrain

Where is Banjarbaru?

Banjarbaru sits at 3.4°S, 114.8°E, 28 m above sea level, in Indonesia. The nearest listed city is Martapura, 5.0 km away.

Topography around Banjarbaru

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

Within 3 km, the terrain around Banjarbaru has only modest variations in elevation — a maximum elevation change of 58 m around an average of 26 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 458 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,369 m.

The land around Banjarbaru is covered by artificial surfaces (57%) and trees (36%) within 3 km, trees (50%) and grassland (21%) within 16 km, and trees (55%) and water (20%) within 80 km.

3 km
58 m
16 km
458 m
80 km
1,369 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Martapura 5.0 km · Banjarmasin 30 km · Kualakapuas 69 km · Barabai 113 km · Amuntai 123 km · Tanjung 155 km · Palangkaraya 171 km · Sampit 233 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 Banjarbaru (-3.4406°, 114.8365°, elevation 28 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).