Rantepao weather in December

In December, Rantepao sees average daytime highs of 28°C and overnight lows near 20°C, with 498 mm of rain across 29.5 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 1% of the time in December, and the air most often feels muggy.

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 Rantepao's 10th-clearest and 8th-windiest month. For the whole year in context, see Rantepao's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
20°
12th coldest
Rainfall
498 mm
29.5 wet days
Daylight
12 h 12 min
5:51 AM – 6:02 PM
Cloud cover
93%
10th clearest
Wind
3 km/h
8th windiest
Solar energy
4.62 kWh/m²
Travel score
3.3
out of 10

Rantepao is capital of North Toraja Regency, South Sulawesi Province, Indonesia.

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 28°C through the month.

A typical December day in Rantepao reaches about 28°C in the afternoon and slips back to 20°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 29°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12820
22820
32820
42820
52820
62820
72820
82820
92820
102820
112820
122820
132820
142820
152820
162820
172820
182820
192820
202820
212820
222820
232820
242820
252820
262820
272820
282820
292820
302820
312820

Rantepao weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 20°49629.512.23.3
Feb28° / 20°48327.412.13.2
Mar28° / 20°49529.5123.3
Apr27° / 20°50327.811.93.5
May27° / 20°26224.511.94.2
Jun27° / 20°20321.211.84.7
Jul26° / 19°12918.211.85.3
Aug27° / 19°9415.311.95.8
Sep28° / 19°7512.2126.0
Oct28° / 19°13315.212.14.9
Nov28° / 20°22623.112.13.8
Dec28° / 20°49829.512.23.3

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 2% of December, with mostly cloudy or overcast conditions the remaining 97%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2694
3694
4694
5694
6595
7595
8595
9595
10496
11496
12496
13496
14397
15397
16397
17397
18397
19397
20397
21298
22298
23298
24199
25199
26199
27199
28199
29199
30199
31298

Chance of precipitation in December

Any precipitation

Rantepao gets around 498 mm of rain over 29.5 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 95% and peaks near 97% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
291
391
492
592
693
793
893
993
1093
1194
1294
1394
1495
1595
1695
1796
1896
1996
2096
2196
2297
2397
2497
2597
2697
2797
2897
2997
3097
3197

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy 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 (%)
17129
27129
37129
47129
57030
67030
77030
87030
97030
107030
117030
127030
136931
146931
156931
166832
176832
186832
196832
206832
216832
226733
236733
246733
256733
266832
276832
286832
296931
306931
317030

Wind in December

Winds average 3 km/h in December.

Across December, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm
313calm

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 5:45 AM to 5:58 AM, and sunset from 5:55 PM to 6:09 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:455:55
212.25:465:55
312.25:465:56
412.25:465:56
512.25:475:57
612.25:475:57
712.25:485:58
812.25:485:58
912.25:485:58
1012.25:495:59
1112.25:495:59
1212.25:506:00
1312.25:506:00
1412.25:516:01
1512.25:516:01
1612.25:516:02
1712.25:526:02
1812.25:526:03
1912.25:536:03
2012.25:536:04
2112.25:546:04
2212.25:546:05
2312.25:556:05
2412.25:556:05
2512.25:566:06
2612.25:566:06
2712.25:576:07
2812.25:576:07
2912.25:586:08
3012.25:586:08
3112.25:586:09

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.62 kWh/m².

For context, solar energy here swings from a low near 4.36 kWh/m² to a high of 5.97 kWh/m² in October across the year — December's 4.62 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.7Bright
94.7Bright
104.7Bright
114.7Bright
124.7Bright
134.7Bright
144.7Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.6Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in December

Hazard calendar for Rantepao

In seasonPeak

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

Rantepao's rainy season runs December–May, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Rantepao?

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

3.3
Sightseeing
9th-best month of the year
3.6
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Rantepao.

What to pack for Rantepao in December

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

In December, Rantepao sees daytime highs around 28°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 30 days see rain.

light clothesrain gearsun protection

Sea temperature near Rantepao 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 54 km away) is warmest in March 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
Oct30Tropical
Nov30Tropical
Dec30Tropical

UV index in Rantepao in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rantepao peaks around March 15 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeMar 15UV 16Jun 21UV 11
UV index (midday)Level
Jan16Extreme
Feb15Extreme
Mar16Extreme
Apr15Extreme
May13Extreme
Jun11Extreme
Jul12Extreme
Aug13Extreme
Sep14Extreme
Oct15Extreme
Nov14Extreme
Dec14Extreme

Air quality in Rantepao 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 Rantepao is worst in October — around 20 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (July, 12 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateOct 1620 µg/m³Jul 1212 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb12Moderate
Mar14Moderate
Apr13Moderate
May12Moderate
Jun12Good
Jul12Good
Aug13Moderate
Sep17Moderate
Oct20Moderate
Nov17Moderate
Dec14Moderate
Location & terrain

Where is Rantepao?

Rantepao sits at 3.0°S, 119.9°E, 784 m above sea level, in Indonesia. The nearest listed city is Palopo, 33 km away.

Topography around Rantepao

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

Within 3 km, the terrain around Rantepao has significant variations in elevation — a maximum elevation change of 322 m around an average of 816 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,593 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,407 m.

The land around Rantepao is covered by trees (56%) and cropland (24%) within 3 km, trees (80%) within 16 km, and trees (78%) within 80 km.

3 km
322 m
16 km
1,593 m
80 km
3,407 m
treesgrasslandcroplandartificial surfaceswatermangroves
December weather nearby: Palopo 33 km · Masamba 67 km · Polewali 80 km · Parepare 120 km · Majene 121 km · Sengkang 130 km · Watampone 181 km · Poso 199 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 Rantepao (-2.9701°, 119.8978°, elevation 784 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).