Ruteng weather in January

In January, Ruteng sees average daytime highs of 27°C and overnight lows near 21°C, with 433 mm of rain across 30 wet days and about 12.4 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°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 30 min at the start of January to 12 h 24 min by month's end. Set against the rest of the year, January is Ruteng's 12th-clearest and 2nd-windiest month. For the whole year in context, see Ruteng's year-round climate.

Daytime high
27°
11th warmest
Overnight low
21°
12th coldest
Rainfall
433 mm
30 wet days
Daylight
12 h 30 min
5:54 AM – 6:21 PM
Cloud cover
91%
12th clearest
Wind
5 km/h
2nd windiest
Solar energy
5.2 kWh/m²
Travel score
3.3
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical January day in Ruteng reaches about 27°C in the afternoon and slips back to 21°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

20°23°25°28°30°151015202531
Avg high (°C)Avg low (°C)
12721
22721
32721
42721
52721
62721
72721
82721
92721
102721
112721
122721
132721
142721
152721
162721
172721
182721
192721
202721
212721
222721
232721
242721
252721
262721
272721
282721
292721
302721
312721

Ruteng weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 21°4333012.43.3
Feb27° / 21°43327.312.33.3
Mar27° / 20°39828.212.13.6
Apr28° / 20°27723.611.84.1
May28° / 19°12016.311.65.2
Jun28° / 19°619.811.56.2
Jul28° / 18°407.211.56.5
Aug29° / 18°234.511.76.2
Sep30° / 19°446.111.95.5
Oct30° / 20°12913.912.24.6
Nov29° / 20°30623.812.43.6
Dec28° / 21°4252912.53.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 1% of the time in January, the cloudiest month of the year.

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 (%)
1694
2793
3793
4694
5694
6694
7694
8694
9694
10694
11694
12595
13595
14595
15595
16595
17595
18595
19595
20595
21397
22397
23397
24397
25397
26397
27397
28397
29397
30397
31397

Chance of precipitation in January

Any precipitation

Ruteng gets around 433 mm of rain over 30 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 97% and peaks near 98% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
195
295
395
496
596
696
796
896
996
1096
1196
1297
1397
1497
1597
1697
1797
1897
1997
2097
2197
2297
2397
2498
2598
2698
2798
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 76% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)
12080
22080
32080
42080
52080
62080
72179
82179
92278
102278
112377
122377
132476
142476
152575
162575
172575
182674
192674
202674
212674
222674
232674
242674
252674
262674
272674
282674
292674
302674
312773

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 5 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
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in January

DaylightNight

Daylight runs from about 12 h 30 min at the start of January to 12 h 24 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 5:46 AM to 6:00 AM, and sunset from 6:16 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:466:16
212.55:476:17
312.55:476:17
412.55:486:17
512.55:496:18
612.55:496:18
712.55:506:18
812.55:506:19
912.55:516:19
1012.55:516:19
1112.55:516:20
1212.55:526:20
1312.55:526:20
1412.55:536:20
1512.55:536:21
1612.55:546:21
1712.45:546:21
1812.45:556:21
1912.45:556:22
2012.45:566:22
2112.45:566:22
2212.45:576:22
2312.45:576:22
2412.45:576:22
2512.45:586:22
2612.45:586:23
2712.45:596:23
2812.45:596:23
2912.45:596:23
3012.46:006:23
3112.46:006:23

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.2 kWh/m².

For context, solar energy here swings from a low near 5 kWh/m² to a high of 6.78 kWh/m² in October across the year — January's 5.2 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
315.0Bright
Planning a trip in January

Hazard calendar for Ruteng

In seasonPeak

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

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

Ruteng's monsoon runs November–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 Ruteng?

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

3.3
Sightseeing
11th-best month of the year
3.5
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Ruteng.

What to pack for Ruteng in January

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

In January, Ruteng sees daytime highs around 27°C and nights near 21°C. Pack rain gear. Worth having: light clothes and sun protection. About 30 days see rain.

rain gearlight clothessun protection

Sea temperature near Ruteng 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 March at about 29°C and coldest in August near 26°C.

The water stays above 20°C all year — warm enough for a swim any month.

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb29Tropical
Mar29Tropical
Apr29Tropical
May28Warm
Jun27Warm
Jul26Warm
Aug26Warm
Sep27Warm
Oct28Warm
Nov29Tropical
Dec29Tropical

UV index in Ruteng in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ruteng peaks around March 10 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 10 at about 10 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeMar 10UV 15Jul 10UV 10
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug13Extreme
Sep14Extreme
Oct13Extreme
Nov12Extreme
Dec13Extreme

Air quality in Ruteng 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 Ruteng is worst in October — around 15 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (February, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1715 µg/m³Feb 199 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb9Good
Mar10Good
Apr10Good
May10Good
Jun12Good
Jul11Good
Aug10Good
Sep13Moderate
Oct15Moderate
Nov13Moderate
Dec11Good
Location & terrain

Where is Ruteng?

Ruteng sits at 8.6°S, 120.5°E, 1,173 m above sea level, in Indonesia. The nearest listed city is Labuan Bajo, 65 km away.

Lewoleba

Topography around Ruteng

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

Within 3 km, the terrain around Ruteng has large variations in elevation — a maximum elevation change of 1,068 m around an average of 1,217 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,215 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,328 m.

The land around Ruteng is covered by trees (63%) within 3 km, trees (89%) within 16 km, and water (56%) and trees (39%) within 80 km.

3 km
1,068 m
16 km
2,215 m
80 km
2,328 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Labuan Bajo 65 km · Waingapu 118 km · Ende 134 km · Tambolaka 162 km · Bima 192 km · Maumere 192 km · Dompu 220 km · Lewoleba 326 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 Ruteng (-8.6114°, 120.4644°, elevation 1,173 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).