Liang weather in September

In September, Liang sees average daytime highs of 30°C and overnight lows near 26°C, with 196 mm of rain across 23.1 wet days and about 12 hours of daylight. It is the 5th-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 4% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 06 min at the start of September to 12 hours by month's end. Set against the rest of the year, September is Liang's 8th-clearest and 7th-windiest month. For the whole year in context, see Liang's year-round climate.

Daytime high
30°
5th warmest
Overnight low
26°
7th coldest
Rainfall
196 mm
23.1 wet days
Daylight
12 hours
6:16 AM – 6:17 PM
Cloud cover
83%
8th clearest
Wind
9 km/h
7th windiest
Solar energy
5.54 kWh/m²
Travel score
3.4
out of 10

Liang is village in Belait District, Brunei.

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 30°C through the month.

A typical September day in Liang reaches about 30°C in the afternoon and slips back to 26°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°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)
13026
23026
33026
43026
53026
63026
73026
83026
93026
103026
113026
123026
133026
143026
153026
163026
173026
183026
193026
203026
213026
223026
233026
242926
252926
262926
272926
282926
292925
302925

How September really feels in Liang

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Liang weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 25°2042311.83.9
Feb28° / 25°12918.111.84.3
Mar29° / 26°10920.6124.1
Apr30° / 26°15023.112.13.5
May30° / 26°17423.412.23.3
Jun30° / 26°19720.512.33.6
Jul30° / 26°18220.512.23.7
Aug30° / 26°18020.912.23.7
Sep30° / 26°19623.1123.4
Oct29° / 25°25627.511.93.1
Nov29° / 25°26128.311.82.9
Dec29° / 25°26327.911.73.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 4% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 9% of September, with mostly cloudy or overcast conditions the remaining 88%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11684
21684
31684
41585
51585
61585
71387
81387
91387
101288
111189
121189
131189
141090
151090
161090
171189
181189
191189
201189
211189
221189
231189
241288
251288
261288
271288
281288
291288
301288

Chance of precipitation in September

Any precipitation

Liang gets around 196 mm of rain over 23.1 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 77% and peaks near 85% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
176
277
377
477
577
676
776
876
975
1075
1175
1274
1374
1473
1573
1673
1773
1874
1975
2075
2176
2278
2379
2480
2581
2682
2783
2884
2984
3085

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 78% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Oppressive (%)Miserable (%)
12377
22377
32476
42476
52476
62476
72476
82476
92476
102476
112476
122476
132476
142476
152377
162278
172278
182179
192080
201981
211981
221981
231882
241882
251981
261981
271981
282080
292080
302179

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

Sunrise & sunset in September

DaylightNight

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

Days shrink by about 6 minutes over September. Sunrise moves from 6:19 AM to 6:12 AM, and sunset from 6:24 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.16:196:24
212.16:196:24
312.16:196:23
412.16:186:23
512.16:186:23
612.16:186:22
712.16:186:22
812.16:176:21
912.16:176:21
1012.16:176:20
1112.06:176:20
1212.06:176:19
1312.06:166:19
1412.06:166:18
1512.06:166:18
1612.06:166:17
1712.06:156:17
1812.06:156:16
1912.06:156:16
2012.06:156:15
2112.06:146:15
2212.06:146:14
2312.06:146:14
2412.06:146:13
2512.06:136:13
2612.06:136:12
2712.06:136:12
2812.06:136:11
2912.06:136:11
3012.06:126:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.54 kWh/m².

For context, solar energy here swings from a low near 4.58 kWh/m² to a high of 5.78 kWh/m² in April across the year — September's 5.54 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.5Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.4Bright
295.4Bright
305.4Bright
Planning a trip in September

Hazard calendar for Liang

In seasonPeak

In September, Liang sits inside its pacific typhoon season. The full year is below, with each hazard's peak months called out.

Liang sits in the Pacific typhoon belt; the season peaks July–October.

Pacific typhoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Liang?

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

3.4
Sightseeing
8th-best month of the year
4.5
Beach & pool
9th-best month of the year

September is a weaker month for outdoor sightseeing in Liang.

What to pack for Liang in September

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

In September, Liang sees daytime highs around 30°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 23 days see rain.

light clothesrain gearsun protection

Sea temperature near Liang in September

The nearest coast averages about 30°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 15 km away) is warmest in May at about 30°C and coldest in February 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
Jan28Warm
Feb27Warm
Mar28Warm
Apr29Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov29Tropical
Dec29Tropical

UV index in Liang in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Liang peaks around February 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 at about 10 (extreme).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeFeb 18UV 14Dec 13UV 10
UV index (midday)Level
Jan13Extreme
Feb14Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep12Extreme
Oct13Extreme
Nov11Extreme
Dec10Extreme

Air quality in Liang 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 Liang is worst in September — around 25 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateSep 1525 µg/m³Dec 1916 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb21Moderate
Mar24Moderate
Apr22Moderate
May23Moderate
Jun21Moderate
Jul21Moderate
Aug21Moderate
Sep25Moderate
Oct20Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Liang?

Liang sits at 4.7°N, 114.5°E, 14 m above sea level, in Brunei. The nearest listed city is Seria, 21 km away.

SeriaTutongKuala BelaitSengkurongBandar Seri BegawanLimbangMarudiMiri

Topography around Liang

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

Within 3 km, the terrain around Liang has only modest variations in elevation — a maximum elevation change of 93 m around an average of 20 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 132 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,643 m.

The land around Liang is covered by trees (57%) and water (22%) within 3 km, trees (51%) and water (43%) within 16 km, and trees (60%) and water (36%) within 80 km.

3 km
93 m
16 km
132 m
80 km
1,643 m
treesgrasslandartificial surfacesbare terrainwatermangroves
September weather nearby: Seria 21 km · Tutong 22 km · Kuala Belait 31 km · Sengkurong 44 km · Bandar Seri Begawan 55 km · Limbang 58 km · Marudi 58 km · Miri 64 km

Brunei travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type G
240 V · 50 Hz
Prices
≈ 35% of US
price level, 2025
GDP per capita
$32,235
2025
Homicide rate
0.5
per 100k, 2013
Road deaths
7.5
per 100k/yr, 2019
Income group
High
World Bank
Religion
Muslim 82%Christian 7%Buddhist 6%other 5%

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 Liang (4.6775°, 114.4959°, elevation 14 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).