Teluk Dalam weather in December

In December, Teluk Dalam sees average daytime highs of 28°C and overnight lows near 25°C, with 334 mm of rain across 26.2 wet days and about 12 hours of daylight. It is the 9th-warmest and 3rd-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 3% of the time in December, and the air most often feels oppressive.

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 Teluk Dalam's 10th-clearest and 3rd-windiest month. For the whole year in context, see Teluk Dalam's year-round climate.

Daytime high
28°
9th warmest
Overnight low
25°
4th coldest
Rainfall
334 mm
26.2 wet days
Daylight
12 hours
6:26 AM – 6:24 PM
Cloud cover
88%
10th clearest
Wind
10 km/h
3rd windiest
Solar energy
4.55 kWh/m²
Travel score
3.7
out of 10

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 Teluk Dalam reaches about 28°C in the afternoon and slips back to 25°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 29°C. Set against its neighbours, December runs on par with November and on par with January.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12825
22825
32825
42825
52825
62825
72825
82825
92825
102825
112825
122825
132825
142825
152825
162825
172825
182825
192825
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826
312826

How December really feels in Teluk Dalam

Once humidity and wind are folded in, December averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Teluk Dalam weather by month

How December compares with the rest of the year at a glance. December is the 9th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 26°23323.8123.8
Feb29° / 26°19019.6124.0
Mar29° / 26°24626123.5
Apr29° / 26°28926.3123.3
May29° / 26°21621.7123.8
Jun29° / 26°18518.3124.3
Jul28° / 26°22521.1124.1
Aug28° / 26°28824.8123.8
Sep28° / 25°31325.3123.8
Oct28° / 25°37327123.7
Nov28° / 25°44127.8123.4
Dec28° / 25°33426.2123.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 5% of December, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5793
6793
7793
8694
9694
10793
11793
12694
13694
14694
15793
16793
17793
18793
19892
20892
21892
22991
231090
241189
251189
261189
271189
281288
291387
301387
311486

Chance of precipitation in December

Any precipitation

Teluk Dalam gets around 334 mm of rain over 26.2 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 84% and peaks near 91% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
191
291
390
490
590
689
788
888
987
1086
1186
1285
1384
1484
1583
1683
1783
1882
1982
2082
2182
2282
2381
2481
2581
2681
2780
2880
2980
3079
3179

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 82% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
18317
28317
38416
48416
58416
68416
78416
88416
98416
108416
118416
128416
138416
148317
158317
168317
178218
188218
198119
208119
218119
228020
238020
248020
258020
268020
278020
288020
298020
308020
318020

Wind in December

Winds average 10 km/h in December.

Across December, daily wind ranges from about 9 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:19 AM to 6:33 AM, and sunset from 6:18 PM to 6:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.06:196:18
212.06:206:18
312.06:206:18
412.06:216:19
512.06:216:19
612.06:216:20
712.06:226:20
812.06:226:20
912.06:236:21
1012.06:236:21
1112.06:246:22
1212.06:246:22
1312.06:256:23
1412.06:256:23
1512.06:256:24
1612.06:266:24
1712.06:266:24
1812.06:276:25
1912.06:276:25
2012.06:286:26
2112.06:286:26
2212.06:296:27
2312.06:296:27
2412.06:306:28
2512.06:306:28
2612.06:316:29
2712.06:316:29
2812.06:326:30
2912.06:326:30
3012.06:326:31
3112.06:336:31

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.55 kWh/m².

For context, solar energy here swings from a low near 4.23 kWh/m² to a high of 5.54 kWh/m² in February across the year — December's 4.55 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.4Bright
84.4Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.6Bright
164.6Bright
174.6Bright
184.6Bright
194.6Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.9Bright
314.9Bright
Planning a trip in December

Is December a good time to visit Teluk Dalam?

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

3.7
Sightseeing
8th-best month of the year
4.1
Beach & pool
9th-best month of the year

December is a weaker month for outdoor sightseeing in Teluk Dalam.

What to pack for Teluk Dalam in December

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

In December, Teluk Dalam sees daytime highs around 28°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Teluk Dalam 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 offshore is warmest in May at about 30°C and coldest in November 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
Feb30Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep29Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Teluk Dalam 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 Teluk Dalam peaks around February 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 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 10UV 11
UV index (midday)Level
Jan13Extreme
Feb15Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun11Extreme
Jul11Extreme
Aug12Extreme
Sep14Extreme
Oct14Extreme
Nov12Extreme
Dec12Extreme

Air quality in Teluk Dalam 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 Teluk Dalam is worst in October — around 17 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 10 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1216 µg/m³Dec 1810 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar12Good
Apr11Good
May11Good
Jun11Good
Jul12Good
Aug11Good
Sep15Moderate
Oct17Moderate
Nov11Good
Dec10Good
Location & terrain

Where is Teluk Dalam?

Teluk Dalam sits at 0.6°N, 97.8°E, 41 m above sea level, in Indonesia. The nearest listed city is Gunungsitoli, 82 km away.

Topography around Teluk Dalam

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

Within 3 km, the terrain around Teluk Dalam has only modest variations in elevation — a maximum elevation change of 168 m around an average of 29 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 480 m; within 80 km, large variations in elevation — a maximum elevation change of 837 m.

The land around Teluk Dalam is covered by trees (66%) and water (22%) within 3 km, water (59%) and trees (39%) within 16 km, and water (80%) and trees (20%) within 80 km.

3 km
168 m
16 km
480 m
80 km
837 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Gunungsitoli 82 km · Lahewa 116 km · Sibolga 169 km · Barus 173 km · Padangsidempuan 186 km · Singkil 191 km · Tarutung 206 km · Subulussalam 232 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 Teluk Dalam (0.5729°, 97.8034°, elevation 41 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).