Tanjungbalai weather in January

In January, Tanjungbalai sees average daytime highs of 30°C and overnight lows near 24°C, with 215 mm of rain across 26.1 wet days and about 11.8 hours of daylight. It is the 10th-warmest and 8th-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 3% of the time in January, and the air most often feels miserable.

Daylight stretches from about 11 h 48 min at the start of January to 11 h 54 min by month's end. Set against the rest of the year, January is Tanjungbalai's 5th-clearest and 4th-windiest month. For the whole year in context, see Tanjungbalai's year-round climate.

Daytime high
30°
10th warmest
Overnight low
24°
1st coldest
Rainfall
215 mm
26.1 wet days
Daylight
11 h 48 min
6:35 AM – 6:25 PM
Cloud cover
83%
5th clearest
Wind
6 km/h
4th windiest
Solar energy
4.93 kWh/m²
Travel score
3.0
out of 10

Tanjungbalai is city in North Sumatra Province, Indonesia.

Density
3,155/km²
people per km²
Founded
1620

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical January day in Tanjungbalai 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 29°C and 31°C. Set against its neighbours, January runs on par with December and on par with February.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
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 January really feels in Tanjungbalai

Once humidity and wind are folded in, January 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 January is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Tanjungbalai weather by month

How January compares with the rest of the year at a glance. January is the 10th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°21526.111.83.0
Feb31° / 25°1572211.93.0
Mar31° / 25°19225.5122.7
Apr31° / 25°23328.312.12.3
May32° / 25°23527.412.12.4
Jun32° / 25°17122.512.22.8
Jul31° / 25°17722.912.23.0
Aug31° / 25°21625.712.12.7
Sep31° / 25°28228.2122.5
Oct30° / 25°33329.611.92.5
Nov30° / 25°36729.511.92.5
Dec30° / 24°33328.411.82.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 11% of January, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11090
21189
31189
41288
51288
61387
71387
81486
91486
101486
111486
121486
131486
141486
151585
161585
171585
181585
191585
201585
211585
221585
231585
241585
251585
261585
271585
281486
291585
301585
311585

Chance of precipitation in January

Any precipitation

Tanjungbalai gets around 215 mm of rain over 26.1 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 85% and peaks near 87% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
187
287
386
486
586
686
785
885
985
1085
1185
1285
1385
1485
1585
1685
1785
1885
1985
2085
2184
2284
2384
2484
2583
2683
2783
2883
2983
3083
3182

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the miserable band about 67% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
13070
23169
33169
43169
53169
63169
73169
83169
93169
103268
113268
123268
133367
143367
153367
163367
173466
183466
193466
203466
213466
223565
233565
243565
253565
263565
273565
283565
293565
303565
313565

Wind in January

Winds average 6 km/h in January.

Across January, daily wind ranges from about 6 km/h on the calmest days to 6 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
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 11 h 48 min at the start of January to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over January. Sunrise moves from 6:29 AM to 6:38 AM, and sunset from 6:19 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:296:19
211.86:296:19
311.86:306:20
411.86:306:20
511.86:316:21
611.86:316:21
711.86:326:22
811.86:326:22
911.86:326:23
1011.86:336:23
1111.86:336:23
1211.86:336:24
1311.86:346:24
1411.86:346:25
1511.86:346:25
1611.86:356:25
1711.86:356:26
1811.86:356:26
1911.86:366:27
2011.96:366:27
2111.96:366:27
2211.96:366:28
2311.96:376:28
2411.96:376:28
2511.96:376:29
2611.96:376:29
2711.96:376:29
2811.96:386:29
2911.96:386:30
3011.96:386:30
3111.96:386:30

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.93 kWh/m².

For context, solar energy here swings from a low near 4.33 kWh/m² to a high of 5.6 kWh/m² in March across the year — January's 4.93 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.7Bright
54.7Bright
64.7Bright
74.7Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.2Bright
295.2Bright
305.2Bright
315.2Bright
Planning a trip in January

Hazard calendar for Tanjungbalai

In seasonPeak

None of Tanjungbalai's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Tanjungbalai sits in the North Indian Ocean cyclone zone; the season peaks May and October–November.

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

Is January a good time to visit Tanjungbalai?

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

3.0
Sightseeing
1st-best month of the year
4.1
Beach & pool
4th-best month of the year

January is a weaker month for outdoor sightseeing in Tanjungbalai.

What to pack for Tanjungbalai in January

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

In January, Tanjungbalai sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 26 days see rain.

light clothesrain gearsun protection

Sea temperature near Tanjungbalai in January

The nearest coast averages about 29°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 19 km away) is warmest in May at about 30°C and coldest in January 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
Feb29Tropical
Mar30Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec29Tropical

UV index in Tanjungbalai in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Tanjungbalai peaks around February 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 21UV 14Jun 19UV 10
UV index (midday)Level
Jan12Extreme
Feb14Extreme
Mar14Extreme
Apr13Extreme
May12Extreme
Jun10Very high
Jul11Extreme
Aug12Extreme
Sep13Extreme
Oct13Extreme
Nov11Extreme
Dec11Extreme

Air quality in Tanjungbalai in January

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.

Air quality in Tanjungbalai is worst in September — around 30 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1630 µg/m³Dec 1019 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb25Moderate
Mar27Moderate
Apr25Moderate
May25Moderate
Jun23Moderate
Jul27Moderate
Aug28Moderate
Sep30Moderate
Oct28Moderate
Nov20Moderate
Dec19Moderate
Location & terrain

Where is Tanjungbalai?

Tanjungbalai sits at 3.0°N, 99.8°E, 4 m above sea level, in Indonesia. The nearest listed city is Teluk Nibung, 4.0 km away.

Topography around Tanjungbalai

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

Within 3 km, the terrain around Tanjungbalai has only modest variations in elevation — a maximum elevation change of 17 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 37 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,136 m.

The land around Tanjungbalai is covered by trees (59%) and artificial surfaces (25%) within 3 km, trees (74%) within 16 km, and trees (56%) and water (37%) within 80 km.

3 km
17 m
16 km
37 m
80 km
2,136 m
treesgrasslandcroplandartificial surfaceswatermangroves
January weather nearby: Teluk Nibung 4.0 km · Kisaran 21 km · Pekan Bahapal 71 km · Pematangsiantar 81 km · Tebingtinggi 81 km · Rantauprapat 96 km · Bandar 102 km · Perbaungan 115 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 Tanjungbalai (2.9667°, 99.8°, elevation 4 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).