Utan weather in January

In January, Utan sees average daytime highs of 30°C and overnight lows near 24°C, with 331 mm of rain across 29.1 wet days and about 12.3 hours of daylight. It is the 11th-warmest and 1st-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 2% 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 Utan's 10th-clearest and 1st-windiest month. For the whole year in context, see Utan's year-round climate.

Daytime high
30°
11th warmest
Overnight low
24°
7th coldest
Rainfall
331 mm
29.1 wet days
Daylight
12 h 18 min
5:52 AM – 6:11 PM
Cloud cover
88%
10th clearest
Wind
9 km/h
1st windiest
Solar energy
4.78 kWh/m²
Travel score
2.8
out of 10

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 Utan 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 28°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
202924
212924
222924
232924
242924
252924
262924
272924
282924
292924
302924
312924

How January really feels in Utan

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.

Utan weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 24°33129.112.32.8
Feb30° / 24°3092712.22.7
Mar30° / 24°27929.4122.6
Apr31° / 24°21826.511.92.7
May31° / 24°12421.211.73.3
Jun31° / 24°8315.311.63.9
Jul31° / 23°6411.711.74.4
Aug31° / 23°388.311.84.5
Sep32° / 24°5711.4123.9
Oct32° / 24°1442012.13.1
Nov31° / 24°24526.812.32.6
Dec30° / 24°28727.612.42.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 6% of January, with mostly cloudy or overcast conditions the remaining 92%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1892
2991
3991
41090
51090
61189
71189
81189
91189
101189
111189
121189
131189
141189
151189
161090
171090
18991
19892
20793
21694
22694
23694
24595
25595
26595
27496
28496
29397
30397
31397

Chance of precipitation in January

Any precipitation

Utan gets around 331 mm of rain over 29.1 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 94% and peaks near 98% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202531
Rain chance (%)
190
291
391
491
591
691
791
891
991
1092
1192
1292
1392
1493
1593
1694
1794
1895
1995
2096
2196
2296
2397
2497
2597
2697
2797
2898
2998
3098
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 84% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
18416
28416
38416
48416
58416
68416
78416
88416
98416
108416
118416
128416
138416
148416
158416
168416
178416
188416
198317
208317
218317
228317
238317
248317
258317
268317
278317
288317
298317
308317
318317

Wind in January

Winds average 9 km/h in January, the windiest month of the year.

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

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 5:45 AM to 5:57 AM, and sunset from 6:06 PM to 6:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:456:06
212.45:456:06
312.45:466:07
412.35:466:07
512.35:476:08
612.35:476:08
712.35:486:08
812.35:486:09
912.35:496:09
1012.35:496:09
1112.35:506:10
1212.35:506:10
1312.35:506:10
1412.35:516:11
1512.35:516:11
1612.35:526:11
1712.35:526:11
1812.35:536:12
1912.35:536:12
2012.35:546:12
2112.35:546:12
2212.35:546:13
2312.35:556:13
2412.35:556:13
2512.35:556:13
2612.35:566:13
2712.35:566:13
2812.35:566:13
2912.35:576:14
3012.35:576:14
3112.35:576:14

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 4.78 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.78 kWh/m² to a high of 6.34 kWh/m² in September across the year — January's 4.78 kWh/m² sits near the bottom.

024151015202531
Solar energy (kWh/m²)Level
14.8Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.9Bright
74.9Bright
84.9Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.6Bright
294.6Bright
304.6Bright
314.6Bright
Planning a trip in January

Hazard calendar for Utan

In seasonPeak

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

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

Utan's rainy season runs November–April, when most of the year's rain falls.

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

Is January a good time to visit Utan?

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

2.8
Sightseeing
7th-best month of the year
3.8
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Utan.

What to pack for Utan in January

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

In January, Utan sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 29 days see rain.

light clothesrain gearsun protection

Sea temperature near Utan 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 34 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
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Utan 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 Utan peaks around March 17 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near November 13 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 17UV 15Nov 13UV 7
UV index (midday)Level
Jan12Extreme
Feb11Extreme
Mar15Extreme
Apr12Extreme
May9Very high
Jun8Very high
Jul9Very high
Aug9Very high
Sep9Very high
Oct9Very high
Nov6High
Dec11Extreme

Air quality in Utan 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 Utan is worst in May — around 69 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecPoorUnhealthyMay 1268 µg/m³Jan 2248 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb48Poor
Mar62Unhealthy
Apr68Unhealthy
May69Unhealthy
Jun65Unhealthy
Jul58Unhealthy
Aug59Unhealthy
Sep64Unhealthy
Oct68Unhealthy
Nov69Unhealthy
Dec50Poor
Location & terrain

Where is Utan?

Utan sits at 6.2°S, 106.9°E, 10 m above sea level, in Indonesia. The nearest listed city is Bekasi, 8.0 km away.

Topography around Utan

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

Within 3 km, the terrain around Utan has only modest variations in elevation — a maximum elevation change of 19 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 66 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,001 m.

The land around Utan is covered by artificial surfaces (74%) within 3 km, artificial surfaces (61%) within 16 km, and water (39%) and trees (30%) within 80 km.

3 km
19 m
16 km
66 m
80 km
3,001 m
treesgrasslandcroplandartificial surfaceswaterwetland
January weather nearby: Bekasi 8.0 km · Jakarta 12 km · Cileungsir 24 km · Cikarang 25 km · South Tangerang 28 km · Depok 29 km · Ciputat 29 km · Pamulang 30 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 Utan (-6.1769°, 106.9467°, elevation 10 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).