Aileu weather in January

In January, Aileu sees average daytime highs of 26°C and overnight lows near 20°C, with 345 mm of rain across 29.5 wet days and about 12.5 hours of daylight. It is the 11th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 26°C through the month. The sky is clear or mostly clear about 2% of the time in January, and the air most often feels muggy.

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 Aileu's 12th-clearest and 4th-windiest month. For the whole year in context, see Aileu's year-round climate.

Daytime high
26°
11th warmest
Overnight low
20°
11th coldest
Rainfall
345 mm
29.5 wet days
Daylight
12 h 30 min
6:33 AM – 7:01 PM
Cloud cover
89%
12th clearest
Wind
5 km/h
4th windiest
Solar energy
5.09 kWh/m²
Travel score
3.5
out of 10

Aileu is A town in Timor-Leste.

Density
69/km²
people per km²

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 26°C through the month.

A typical January day in Aileu reaches about 26°C in the afternoon and slips back to 20°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 27°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12620
22620
32620
42620
52620
62620
72620
82620
92620
102620
112620
122620
132620
142620
152620
162620
172620
182620
192620
202620
212620
222620
232620
242620
252620
262620
272620
282620
292620
302620
312620

Aileu 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
Jan26° / 20°34529.512.53.5
Feb26° / 20°3262712.33.5
Mar26° / 20°30727.412.13.9
Apr27° / 19°18719.311.84.9
May27° / 19°811211.66.2
Jun26° / 18°416.711.57.1
Jul26° / 17°194.411.57.5
Aug27° / 16°81.511.77.9
Sep28° / 17°152.211.97.2
Oct29° / 19°416.612.26.0
Nov28° / 20°15717.812.44.7
Dec27° / 20°33428.812.53.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 5% of January, with mostly cloudy or overcast conditions the remaining 93%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5892
6892
7892
8892
9991
10991
11892
12892
13892
14892
15892
16793
17793
18793
19793
20694
21694
22595
23595
24496
25496
26496
27496
28496
29496
30496
31595

Chance of precipitation in January

Any precipitation

Aileu gets around 345 mm of rain over 29.5 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 97% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
194
294
394
494
593
693
793
893
993
1094
1194
1294
1394
1495
1595
1695
1796
1896
1996
2096
2197
2297
2397
2497
2597
2697
2797
2897
2997
3097
3197

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the muggy band about 94% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Humid (%)Muggy (%)Oppressive (%)
118811
218811
309010
40919
50919
60928
70937
80937
90946
100946
110955
120955
130955
140964
150964
160964
170964
180964
190964
200964
210955
220955
230955
240955
250955
260955
270955
280955
290955
300946
310946

Wind in January

Winds average 5 km/h in January.

Across January, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 6:26 AM to 6:40 AM, and sunset from 6:56 PM to 7:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:266:56
212.56:266:56
312.56:276:57
412.56:276:57
512.56:286:57
612.56:286:58
712.56:296:58
812.56:296:58
912.56:306:59
1012.56:306:59
1112.56:316:59
1212.56:317:00
1312.56:327:00
1412.56:327:00
1512.56:337:01
1612.56:337:01
1712.56:347:01
1812.46:347:01
1912.46:357:01
2012.46:357:02
2112.46:367:02
2212.46:367:02
2312.46:367:02
2412.46:377:02
2512.46:377:02
2612.46:387:02
2712.46:387:02
2812.46:387:02
2912.46:397:03
3012.46:397:03
3112.46:407:03

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 5.09 kWh/m².

For context, solar energy here swings from a low near 4.64 kWh/m² to a high of 6.62 kWh/m² in October across the year — January's 5.09 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.1Bright
65.1Bright
75.1Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.1Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
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 Aileu

In seasonPeak

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

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

Aileu'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 Aileu?

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

3.5
Sightseeing
11th-best month of the year
3.4
Beach & pool
11th-best month of the year

January is a weaker month for outdoor sightseeing in Aileu.

What to pack for Aileu in January

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

In January, Aileu sees daytime highs around 26°C and nights near 20°C. Pack rain gear. Worth having: light clothes and sun protection. About 30 days see rain.

rain gearlight clothessun protection

Sea temperature near Aileu 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 40 km away) is warmest in November at about 30°C and coldest in August near 27°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
Apr29Tropical
May29Tropical
Jun28Tropical
Jul28Warm
Aug27Warm
Sep28Warm
Oct29Tropical
Nov30Tropical
Dec30Tropical

UV index in Aileu 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 Aileu peaks around March 10 at about 16 (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 16Jul 10UV 10
UV index (midday)Level
Jan14Extreme
Feb16Extreme
Mar16Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug12Extreme
Sep15Extreme
Oct14Extreme
Nov14Extreme
Dec13Extreme
Location & terrain

Where is Aileu?

Aileu sits at 8.7°S, 125.6°E, 913 m above sea level, in Timor Leste. The nearest listed city is Gleno, 14 km away.

AtsabeLiquiçáMaubaraMalianaSuaiAtambua

Topography around Aileu

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

Within 3 km, the terrain around Aileu has significant variations in elevation — a maximum elevation change of 339 m around an average of 994 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,315 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,916 m.

The land around Aileu is covered by grassland (66%) and trees (26%) within 3 km, grassland (51%) and trees (48%) within 16 km, and water (50%) and trees (36%) within 80 km.

3 km
339 m
16 km
2,315 m
80 km
2,916 m
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Gleno 14 km · Dili 19 km · Atsabe 29 km · Liquiçá 29 km · Maubara 42 km · Maliana 48 km · Suai 73 km · Atambua 85 km

Timor Leste travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E / F / I
220 V · 50 Hz
Prices
≈ 28% of US
price level, 2025
GDP per capita
$1,341
2025
Homicide rate
4.1
per 100k, 2015
Road deaths
11.9
per 100k/yr, 2019
Income group
Lower middle
World Bank
Religion
Catholic 91%other 7%Protestant Evangelical 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 Aileu (-8.7281°, 125.5664°, elevation 913 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).