Berastagi weather in December

In December, Berastagi sees average daytime highs of 26°C and overnight lows near 19°C, with 340 mm of rain across 30.1 wet days and about 11.8 hours of daylight. It is the 12th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 0% of the time in December, and the air most often feels muggy.

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 Berastagi's 11th-clearest and 5th-windiest month. For the whole year in context, see Berastagi's year-round climate.

Daytime high
26°
12th warmest
Overnight low
19°
10th coldest
Rainfall
340 mm
30.1 wet days
Daylight
11 h 48 min
6:28 AM – 6:17 PM
Cloud cover
93%
11th clearest
Wind
4 km/h
5th windiest
Solar energy
3.83 kWh/m²
Travel score
3.4
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 26°C through the month.

A typical December day in Berastagi reaches about 26°C in the afternoon and slips back to 19°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 27°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)
12619
22619
32619
42619
52619
62619
72619
82619
92619
102619
112619
122619
132619
142619
152619
162519
172519
182519
192519
202519
212519
222519
232519
242519
252519
262519
272519
282518
292518
302518
312518

Berastagi 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
Jan26° / 18°23828.411.83.7
Feb26° / 18°19625.111.93.8
Mar27° / 18°22628.5123.6
Apr27° / 19°26129.212.13.3
May28° / 19°23827.612.13.6
Jun28° / 19°18224.512.24.0
Jul27° / 18°18224.512.24.1
Aug27° / 18°22526.512.13.8
Sep27° / 18°28828.4123.5
Oct26° / 18°33429.611.93.4
Nov26° / 19°34629.611.93.3
Dec26° / 19°34030.111.83.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 0% 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 98%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1298
2298
3298
4298
5298
6298
7298
8298
9298
10298
11298
12298
13298
14199
15199
16199
17199
18199
19199
20199
21199
22199
23199
24199
25298
26298
27298
28298
29397
30397
31397

Chance of precipitation in December

Any precipitation

Berastagi gets around 340 mm of rain over 30.1 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 97% and peaks near 98% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
198
298
398
498
598
698
798
897
997
1097
1197
1297
1397
1497
1597
1697
1797
1897
1997
2097
2197
2297
2397
2497
2597
2697
2797
2896
2996
3096
3195

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 96% of days. Sticky, muggy-or-worse air turns up on roughly 96% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)
1397
2397
3397
4397
5397
6397
7397
8496
9496
10496
11496
12496
13496
14496
15397
16397
17397
18397
19397
20397
21397
22397
23397
24496
25496
26496
27496
28496
29595
30694
31694

Wind in December

Winds average 4 km/h in December.

Across December, daily wind ranges from about 4 km/h on the calmest days to 4 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
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

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 6:21 AM to 6:35 AM, and sunset from 6:11 PM to 6:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:216:11
211.86:216:11
311.86:226:11
411.86:226:12
511.86:236:12
611.86:236:12
711.86:236:13
811.86:246:13
911.86:246:14
1011.86:256:14
1111.86:256:14
1211.86:266:15
1311.86:266:15
1411.86:276:16
1511.86:276:16
1611.86:286:17
1711.86:286:17
1811.86:296:18
1911.86:296:18
2011.86:306:18
2111.86:306:19
2211.86:306:19
2311.86:316:20
2411.86:316:20
2511.86:326:21
2611.86:326:21
2711.86:336:22
2811.86:336:22
2911.86:346:23
3011.86:346:23
3111.86:356:24

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.83 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.83 kWh/m² to a high of 5.15 kWh/m² in March across the year — December's 3.83 kWh/m² sits near the bottom.

012345151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.8Moderate
63.8Moderate
73.8Moderate
83.8Moderate
93.8Moderate
103.8Moderate
113.8Moderate
123.8Moderate
133.8Moderate
143.8Moderate
153.8Moderate
163.8Moderate
173.8Moderate
183.8Moderate
193.8Moderate
203.8Moderate
213.9Moderate
223.9Moderate
233.9Moderate
243.9Moderate
253.9Moderate
263.9Moderate
274.0Moderate
284.0Moderate
294.0Bright
304.0Bright
314.1Bright
Planning a trip in December

Is December a good time to visit Berastagi?

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

3.4
Sightseeing
9th-best month of the year
3.3
Beach & pool
11th-best month of the year

December is a weaker month for outdoor sightseeing in Berastagi.

What to pack for Berastagi in December

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

In December, Berastagi sees daytime highs around 26°C and nights near 19°C. Pack rain gear. Worth having: light clothes. About 30 days see rain.

rain gearlight clothes

UV index in Berastagi 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 Berastagi peaks around February 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 11 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 22UV 15Jun 20UV 11
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct13Extreme
Nov11Extreme
Dec12Extreme

Air quality in Berastagi 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 Berastagi is worst in March — around 25 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMar 1425 µg/m³Dec 1218 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb24Moderate
Mar25Moderate
Apr23Moderate
May21Moderate
Jun21Moderate
Jul20Moderate
Aug20Moderate
Sep24Moderate
Oct23Moderate
Nov19Moderate
Dec18Moderate
Location & terrain

Where is Berastagi?

Berastagi sits at 3.2°N, 98.5°E, 1,402 m above sea level, in Indonesia. The nearest listed city is Kabanjahe, 11 km away.

Topography around Berastagi

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

Within 3 km, the terrain around Berastagi has significant variations in elevation — a maximum elevation change of 496 m around an average of 1,430 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,068 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,477 m.

The land around Berastagi is covered by trees (44%) and cropland (23%) within 3 km, trees (72%) within 16 km, and trees (78%) within 80 km.

3 km
496 m
16 km
2,068 m
80 km
2,477 m
treesgrasslandcroplandartificial surfacesbare terrainwatermangroves
December weather nearby: Kabanjahe 11 km · Tongging 33 km · Paropo 37 km · Deli Tua 40 km · Sunggal 44 km · Binjai 45 km · Medan 47 km · Sidikalang 54 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 Berastagi (3.1947°, 98.5089°, elevation 1,402 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. 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).