Baucau weather in September

In September, Baucau sees average daytime highs of 29°C and overnight lows near 21°C, with 14 mm of rain across 2.6 wet days and about 12 hours of daylight. It is the 4th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels muggy.

Daylight stretches from about 11 h 48 min at the start of September to 12 h 06 min by month's end. Set against the rest of the year, September is Baucau's 1st-clearest and 7th-windiest month. For the whole year in context, see Baucau's year-round climate.

Daytime high
29°
4th warmest
Overnight low
21°
3rd coldest
Rainfall
14 mm
2.6 wet days
Daylight
12 hours
6:30 AM – 6:27 PM
Cloud cover
46%
1st clearest
Wind
8 km/h
7th windiest
Solar energy
6.79 kWh/m²
Travel score
6.8
out of 10

Baucau is city in East Timor.

Density
43/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Baucau reaches about 29°C in the afternoon and slips back to 21°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 30°C. Set against its neighbours, September runs about 1°C warmer than August and about 1°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12821
22821
32821
42821
52821
62821
72821
82821
92821
102821
112821
122921
132921
142921
152921
162921
172921
182921
192921
202921
212921
222921
232921
242921
252921
262921
272922
282922
292922
302922

How September really feels in Baucau

Once humidity and wind are folded in, September 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

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

Baucau weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°29728.412.43.4
Feb28° / 24°28126.212.33.4
Mar28° / 23°29926.112.13.7
Apr28° / 23°19720.511.84.3
May28° / 23°9814.411.65.7
Jun27° / 22°519.811.56.5
Jul27° / 21°236.911.67.1
Aug27° / 20°9311.77.6
Sep29° / 21°142.6126.8
Oct30° / 22°435.612.25.7
Nov30° / 24°1561412.44.4
Dec29° / 24°30826.612.53.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 22% of September, with mostly cloudy or overcast conditions the remaining 33%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16733
26733
36832
46832
56832
66832
76832
86832
96733
106733
116634
126634
136634
146634
156634
166634
176634
186634
196634
206634
216634
226634
236634
246634
256634
266733
276733
286733
296832
306832

Chance of precipitation in September

Any precipitation

Baucau gets around 14 mm of rain over 2.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 9% and peaks near 11% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
18
28
38
48
57
67
77
87
97
107
117
127
138
148
158
168
178
189
199
209
219
2210
2310
2410
2510
2610
2710
2811
2911
3011

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 65% of days. Sticky, muggy-or-worse air turns up on roughly 79% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12286010
21286110
31286110
41286110
51276210
61276210
71276210
80266410
90266410
100256510
110246511
120246511
130236611
140236512
150226612
160216712
170216613
180206713
190196714
200186814
210186715
220176716
230166816
240156817
250156718
260146818
270136819
280126820
290116821
300116722

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 11 h 48 min at the start of September to 12 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over September. Sunrise moves from 6:39 AM to 6:22 AM, and sunset from 6:29 PM to 6:25 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:396:29
211.86:386:29
311.96:386:29
411.96:376:29
511.96:376:29
611.96:366:28
711.96:356:28
811.96:356:28
911.96:346:28
1011.96:346:28
1111.96:336:28
1211.96:326:28
1311.96:326:28
1411.96:316:27
1511.96:306:27
1612.06:306:27
1712.06:296:27
1812.06:296:27
1912.06:286:27
2012.06:276:27
2112.06:276:26
2212.06:266:26
2312.06:266:26
2412.06:256:26
2512.06:246:26
2612.06:246:26
2712.06:236:26
2812.16:236:26
2912.16:226:26
3012.16:226:25

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.79 kWh/m².

For context, solar energy here swings from a low near 4.69 kWh/m² to a high of 7.23 kWh/m² in October across the year — September's 6.79 kWh/m² sits near the top of that range.

02468151015202530
Solar energy (kWh/m²)Level
16.4Intense
26.5Intense
36.5Intense
46.5Intense
56.5Intense
66.6Intense
76.6Intense
86.6Intense
96.6Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.9Intense
216.9Intense
226.9Intense
237.0Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.1Intense
307.1Intense
Planning a trip in September

Hazard calendar for Baucau

In seasonPeak

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

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

Baucau'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 September a good time to visit Baucau?

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

6.8
Sightseeing
3rd-best month of the year
8.3
Beach & pool
1st-best month of the year

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

What to pack for Baucau in September

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

In September, Baucau sees daytime highs around 29°C and nights near 21°C. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Baucau in September

The nearest coast averages about 27°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 14 km away) is warmest in December 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
Jul27Warm
Aug27Warm
Sep27Warm
Oct28Tropical
Nov30Tropical
Dec30Tropical

UV index in Baucau in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Baucau peaks around February 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near July 11 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highExtremeFeb 22UV 15Jul 11UV 9
UV index (midday)Level
Jan14Extreme
Feb15Extreme
Mar15Extreme
Apr14Extreme
May11Extreme
Jun10Very high
Jul9Very high
Aug12Extreme
Sep14Extreme
Oct14Extreme
Nov14Extreme
Dec12Extreme
Location & terrain

Where is Baucau?

Baucau sits at 8.5°S, 126.5°E, 442 m above sea level, in Timor Leste. The nearest listed city is Venilale, 20 km away.

VenilaleLospalosDiliAileuGlenoLiquiçáAtsabeMaubara

Topography around Baucau

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

Within 3 km, the terrain around Baucau has significant variations in elevation — a maximum elevation change of 460 m around an average of 361 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 845 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,299 m.

The land around Baucau is covered by grassland (52%) and trees (37%) within 3 km, water (37%), trees (30%) and grassland (28%) within 16 km, and water (61%) and trees (32%) within 80 km.

3 km
460 m
16 km
845 m
80 km
2,299 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Venilale 20 km · Lospalos 60 km · Dili 98 km · Aileu 102 km · Gleno 116 km · Liquiçá 123 km · Atsabe 127 km · Maubara 138 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 Baucau (-8.4757°, 126.4563°, elevation 442 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).