Aileu weather in May

In May, Aileu sees average daytime highs of 27°C and overnight lows near 19°C, with 81 mm of rain across 12 wet days and about 11.6 hours of daylight. It is the 7th-warmest and 7th-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 16% of the time in May, and the air most often feels muggy.

Daylight stretches from about 11 h 42 min at the start of May to 11 h 30 min by month's end. Set against the rest of the year, May is Aileu's 7th-clearest and 6th-windiest month. For the whole year in context, see Aileu's year-round climate.

Daytime high
27°
7th warmest
Overnight low
19°
6th coldest
Rainfall
81 mm
12 wet days
Daylight
11 h 36 min
6:46 AM – 6:22 PM
Cloud cover
65%
7th clearest
Wind
5 km/h
6th windiest
Solar energy
4.83 kWh/m²
Travel score
6.2
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 May

Average highAverage lowShaded bands: 10–90% of days

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

A typical May day in Aileu reaches about 27°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, May runs on par with April and on par with June.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12719
22719
32719
42719
52719
62719
72719
82719
92719
102719
112719
122719
132719
142719
152719
162719
172719
182719
192719
202619
212619
222619
232619
242619
252619
262618
272618
282618
292618
302618
312618

Aileu weather by month

How May compares with the rest of the year at a glance. May is the 7th-warmest and 7th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 25% of May, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33862
43763
53763
63664
73664
83763
93763
103862
113862
123961
134060
144159
154159
164357
174357
184456
194456
204357
214357
224555
234555
244456
254456
264555
274456
284456
294456
304456
314456

Chance of precipitation in May

Any precipitation

Aileu gets around 81 mm of rain over 12 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 38% and peaks near 42% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
142
242
341
441
541
641
741
841
941
1041
1141
1241
1341
1441
1541
1641
1741
1840
1940
2039
2139
2238
2337
2436
2535
2634
2733
2832
2931
3030
3129

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 57% of days. Sticky, muggy-or-worse air turns up on roughly 60% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1132652
2232642
3233632
4233632
5233623
6233623
7333613
8333613
9333604
10333604
11333604
12333604
13334594
14334594
15335584
16336574
17336574
18337564
19337573
20338563
21339553
22439543
23440542
24441532
25442522
26442531
27543511
28544501
29545491
30546481
31647470

Wind in May

Winds average 5 km/h in May.

Across May, 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
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 11 h 42 min at the start of May to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over May. Sunrise moves from 6:44 AM to 6:49 AM, and sunset from 6:26 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:446:26
211.76:446:25
311.76:446:25
411.76:446:25
511.76:446:25
611.76:446:24
711.76:456:24
811.76:456:24
911.66:456:23
1011.66:456:23
1111.66:456:23
1211.66:456:23
1311.66:456:23
1411.66:466:22
1511.66:466:22
1611.66:466:22
1711.66:466:22
1811.66:466:22
1911.66:466:22
2011.66:476:22
2111.66:476:21
2211.66:476:21
2311.66:476:21
2411.66:486:21
2511.66:486:21
2611.66:486:21
2711.56:486:21
2811.56:486:21
2911.56:496:21
3011.56:496:21
3111.56:496:21

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.83 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 — May's 4.83 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
314.7Bright
Planning a trip in May

Hazard calendar for Aileu

In seasonPeak

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

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 May a good time to visit Aileu?

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

6.2
Sightseeing
5th-best month of the year
6.1
Beach & pool
6th-best month of the year

May is a reasonable time to visit Aileu for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Aileu in May

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

In May, Aileu sees daytime highs around 27°C and nights near 19°C. Worth packing: light clothes, rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

Sea temperature near Aileu in May

The nearest coast averages about 29°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (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
May 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).