Labuan Bajo weather in September

In September, Labuan Bajo sees average daytime highs of 29°C and overnight lows near 23°C, with 48 mm of rain across 5.9 wet days and about 12 hours of daylight. It is the 2nd-warmest and 10th-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 43% 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 Labuan Bajo's 2nd-clearest and 8th-windiest month. For the whole year in context, see Labuan Bajo's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
23°
3rd coldest
Rainfall
48 mm
5.9 wet days
Daylight
12 hours
5:56 AM – 5:53 PM
Cloud cover
47%
2nd clearest
Wind
7 km/h
8th windiest
Solar energy
6.76 kWh/m²
Travel score
6.0
out of 10

Labuan Bajo is capital of West Manggarai Regency, East Nusa Tenggara, Indonesia.

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 Labuan Bajo reaches about 29°C in the afternoon and slips back to 23°C overnight — a 7°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 on par with August and on par with October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12922
22922
32922
42922
52922
62922
72922
82922
92922
102922
112922
122922
132922
142922
152922
162923
172923
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923

How September really feels in Labuan Bajo

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.

Labuan Bajo weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 24°37529.412.43.3
Feb28° / 24°36226.412.33.4
Mar28° / 24°31426.912.13.4
Apr29° / 24°24621.711.83.9
May29° / 23°9611.511.65.3
Jun29° / 23°546.211.56.1
Jul29° / 22°323.911.66.6
Aug29° / 22°162.711.76.6
Sep29° / 23°485.9126.0
Oct29° / 23°14415.912.24.7
Nov29° / 24°24123.812.43.6
Dec29° / 24°34028.212.53.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 26% of September, with mostly cloudy or overcast conditions the remaining 32%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27228
37228
47129
57228
67228
77129
87129
97030
107129
117030
127030
137030
146931
156931
166931
176931
186832
196832
206733
216832
226832
236733
246634
256535
266535
276436
286436
296337
306238

Chance of precipitation in September

Any precipitation

Labuan Bajo gets around 48 mm of rain over 5.9 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 21% and peaks near 32% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
110
211
311
411
512
612
713
814
915
1016
1117
1218
1319
1420
1521
1622
1723
1823
1924
2025
2126
2226
2327
2428
2528
2629
2730
2830
2931
3032

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 62% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
11116919
21107019
31107019
4197020
5197020
6187120
7187021
8187021
9177022
10176923
11077023
12067024
13066826
14066727
15066628
16056530
17056431
18056233
19046135
20046036
21035938
22035740
23035542
24035344
25035146
26034948
27024751
28024553
29024355
30024157

Wind in September

Winds average 7 km/h in September.

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

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
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 6:05 AM to 5:48 AM, and sunset from 5:55 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:055:55
211.86:055:55
311.96:045:55
411.96:035:55
511.96:035:55
611.96:025:55
711.96:025:55
811.96:015:54
911.96:005:54
1011.96:005:54
1111.95:595:54
1211.95:595:54
1311.95:585:54
1411.95:575:54
1511.95:575:54
1612.05:565:53
1712.05:565:53
1812.05:555:53
1912.05:545:53
2012.05:545:53
2112.05:535:53
2212.05:525:53
2312.05:525:52
2412.05:515:52
2512.05:515:52
2612.05:505:52
2712.05:505:52
2812.15:495:52
2912.15:485:52
3012.15:485:52

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.76 kWh/m².

For context, solar energy here swings from a low near 5.25 kWh/m² to a high of 7 kWh/m² in October across the year — September's 6.76 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.5Intense
26.5Intense
36.5Intense
46.5Intense
56.6Intense
66.6Intense
76.6Intense
86.6Intense
96.7Intense
106.7Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.8Intense
226.9Intense
236.9Intense
246.9Intense
256.9Intense
266.9Intense
276.9Intense
286.9Intense
296.9Intense
307.0Intense
Planning a trip in September

Hazard calendar for Labuan Bajo

In seasonPeak

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

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

Labuan Bajo'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 Labuan Bajo?

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

6.0
Sightseeing
4th-best month of the year
7.7
Beach & pool
3rd-best month of the year

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

What to pack for Labuan Bajo in September

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

In September, Labuan Bajo sees daytime highs around 29°C and nights near 23°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

Sea temperature near Labuan Bajo in September

The nearest coast averages about 28°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 November at about 30°C and coldest in August near 28°C.

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

26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar29Tropical
Apr29Tropical
May29Tropical
Jun29Tropical
Jul28Tropical
Aug28Warm
Sep28Warm
Oct29Tropical
Nov30Tropical
Dec29Tropical

UV index in Labuan Bajo in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Labuan Bajo 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
Jan13Extreme
Feb15Extreme
Mar15Extreme
Apr13Extreme
May11Extreme
Jun10Very high
Jul10Very high
Aug12Extreme
Sep13Extreme
Oct12Extreme
Nov11Extreme
Dec12Extreme

Air quality in Labuan Bajo in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Labuan Bajo is worst in October — around 20 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (February, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodGoodModerateOct 1819 µg/m³Feb 1810 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb10Good
Mar10Good
Apr10Good
May11Good
Jun12Moderate
Jul11Good
Aug12Good
Sep14Moderate
Oct20Moderate
Nov16Moderate
Dec13Moderate
Location & terrain

Where is Labuan Bajo?

Labuan Bajo sits at 8.5°S, 119.9°E, 63 m above sea level, in Indonesia. The nearest listed city is Ruteng, 65 km away.

Topography around Labuan Bajo

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

Within 3 km, the terrain around Labuan Bajo has significant variations in elevation — a maximum elevation change of 311 m around an average of 63 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,185 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,330 m.

The land around Labuan Bajo is covered by trees (53%) and water (24%) within 3 km, water (51%) and trees (42%) within 16 km, and water (71%) and trees (25%) within 80 km.

3 km
311 m
16 km
1,185 m
80 km
2,330 m
treesgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Ruteng 65 km · Tambolaka 126 km · Bima 128 km · Waingapu 135 km · Dompu 157 km · Ende 199 km · Maumere 256 km · Sumbawa Besar 271 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 Labuan Bajo (-8.4964°, 119.8877°, elevation 63 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).