Lawang weather in January

In January, Lawang sees average daytime highs of 28°C and overnight lows near 21°C, with 512 mm of rain across 29.7 wet days and about 12.4 hours of daylight. It is the 10th-warmest and 1st-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 January, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of January to 12 h 18 min by month's end. Set against the rest of the year, January is Lawang's 11th-clearest and 10th-windiest month. For the whole year in context, see Lawang's year-round climate.

Daytime high
28°
10th warmest
Overnight low
21°
10th coldest
Rainfall
512 mm
29.7 wet days
Daylight
12 h 24 min
5:26 AM – 5:51 PM
Cloud cover
90%
11th clearest
Wind
3 km/h
10th windiest
Solar energy
4.51 kWh/m²
Travel score
3.1
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical January day in Lawang reaches about 28°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°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)
12922
22822
32822
42822
52822
62822
72822
82822
92822
102822
112821
122821
132821
142821
152821
162821
172821
182821
192821
202821
212821
222821
232821
242821
252821
262821
272821
282821
292821
302821
312821

How January really feels in Lawang

Once humidity and wind are folded in, January 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

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

Lawang weather by month

How January compares with the rest of the year at a glance. January is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 21°51229.712.43.1
Feb28° / 21°48927.312.33.0
Mar28° / 21°42928.912.13.2
Apr29° / 21°2362411.83.7
May29° / 21°8114.511.64.9
Jun29° / 20°388.711.65.6
Jul29° / 19°21511.66.2
Aug29° / 19°10311.76.3
Sep30° / 20°214.5125.6
Oct31° / 21°7010.712.24.6
Nov30° / 22°21020.912.43.5
Dec29° / 22°42028.612.43.1

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 4% of January, with mostly cloudy or overcast conditions the remaining 95%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1595
2595
3793
4793
5793
6892
7892
8991
9991
10991
11991
12793
13694
14694
15694
16595
17595
18595
19496
20496
21397
22397
23298
24298
25199
26199
27199
28199
29298
30298
31298

Chance of precipitation in January

Any precipitation

Lawang gets around 512 mm of rain over 29.7 wet days in January, the wettest month. 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 99% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
193
293
393
493
593
693
793
893
993
1093
1193
1294
1394
1494
1594
1695
1795
1896
1996
2096
2197
2297
2398
2498
2598
2698
2799
2899
2999
3099
3198

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the oppressive band about 86% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
11684
21684
31585
41585
51585
61585
71585
81585
91585
101585
111585
121585
131585
141585
151585
161585
171585
181585
191486
201486
211486
221387
231387
241387
251288
261288
271288
281288
291288
301288
311387

Wind in January

Winds average 3 km/h in January.

Across January, daily wind ranges from about 3 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
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm
314calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 24 min at the start of January to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over January. Sunrise moves from 5:19 AM to 5:32 AM, and sunset from 5:46 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:195:46
212.45:195:46
312.45:205:47
412.45:205:47
512.45:215:47
612.45:215:48
712.45:225:48
812.45:225:48
912.45:235:49
1012.45:235:49
1112.45:245:49
1212.45:245:50
1312.45:255:50
1412.45:255:50
1512.45:265:51
1612.45:265:51
1712.45:275:51
1812.45:275:51
1912.45:285:51
2012.45:285:52
2112.45:285:52
2212.45:295:52
2312.45:295:52
2412.45:305:52
2512.45:305:52
2612.45:305:53
2712.45:315:53
2812.45:315:53
2912.45:325:53
3012.35:325:53
3112.35:325:53

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.51 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.51 kWh/m² to a high of 6.2 kWh/m² in September across the year — January's 4.51 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.6Bright
44.6Bright
54.6Bright
64.6Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in January

Hazard calendar for Lawang

In seasonPeak

In January, Lawang sits inside its cyclone and monsoon season. The full year is below, with each hazard's peak months called out.

Lawang sits in the South Indian Ocean cyclone belt; the season peaks January–March.

Lawang's monsoon runs December–April, when most of the year's rain falls.

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

Is January a good time to visit Lawang?

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

3.1
Sightseeing
10th-best month of the year
3.7
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Lawang.

What to pack for Lawang in January

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

In January, Lawang sees daytime highs around 28°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 30 days see rain.

light clothesrain gearsun protection

Sea temperature near Lawang 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 31 km away) is warmest in November 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
Mar29Tropical
Apr30Tropical
May30Tropical
Jun29Tropical
Jul28Tropical
Aug28Tropical
Sep28Tropical
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Lawang in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lawang peaks around March 18 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 17 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 18UV 15Jun 17UV 8
UV index (midday)Level
Jan13Extreme
Feb12Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun8Very high
Jul10Extreme
Aug12Extreme
Sep13Extreme
Oct14Extreme
Nov12Extreme
Dec11Extreme

Air quality in Lawang 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 Lawang is worst in May — around 101 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0306090120JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyMay 13101 µg/m³Aug 2267 µg/m³
PM2.5 (µg/m³)Level
Jan76Unhealthy
Feb71Unhealthy
Mar87Unhealthy
Apr99Unhealthy
May101Unhealthy
Jun95Unhealthy
Jul81Unhealthy
Aug66Unhealthy
Sep69Unhealthy
Oct80Unhealthy
Nov87Unhealthy
Dec81Unhealthy
Location & terrain

Where is Lawang?

Lawang sits at 7.8°S, 112.7°E, 509 m above sea level, in Indonesia. The nearest listed city is Singosari, 7.0 km away.

Topography around Lawang

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

Within 3 km, the terrain around Lawang has significant variations in elevation — a maximum elevation change of 369 m around an average of 538 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 3,237 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,645 m.

The land around Lawang is covered by trees (58%) and artificial surfaces (24%) within 3 km, trees (65%) within 16 km, and trees (46%), water (24%) and cropland (20%) within 80 km.

3 km
369 m
16 km
3,237 m
80 km
3,645 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Singosari 7.0 km · Malang 18 km · Batu 19 km · Prigen 19 km · Pandaan 20 km · Pakisaji 28 km · Bangil 30 km · Pasuruan 32 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 Lawang (-7.8353°, 112.6947°, elevation 509 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).