Lai Chi Van weather in September

In September, Lai Chi Van sees average daytime highs of 28°C and overnight lows near 27°C, with 231 mm of rain across 17.1 wet days and about 12.1 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 41% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Lai Chi Van's 5th-clearest and 10th-windiest month. For the whole year in context, see Lai Chi Van's year-round climate.

Daytime high
28°
3rd warmest
Overnight low
27°
9th coldest
Rainfall
231 mm
17.1 wet days
Daylight
12 h 06 min
6:16 AM – 6:24 PM
Cloud cover
55%
5th clearest
Wind
19 km/h
10th windiest
Solar energy
5.05 kWh/m²
Travel score
5.0
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 28°C through the month.

A typical September day in Lai Chi Van reaches about 28°C in the afternoon and slips back to 27°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 30°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12927
22927
32927
42927
52927
62927
72927
82927
92927
102927
112927
122927
132827
142827
152827
162827
172827
182826
192826
202826
212826
222826
232826
242826
252826
262826
272826
282826
292826
302826

How September really feels in Lai Chi Van

Once humidity and wind are folded in, September averages 21 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
21
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.

Lai Chi Van weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 15°35610.86.5
Feb19° / 16°518.711.26.0
Mar21° / 19°6910.511.86.2
Apr24° / 22°10910.912.56.5
May26° / 25°20816.6135.5
Jun28° / 27°30321.413.34.1
Jul29° / 28°27719.913.24.2
Aug29° / 27°34721.412.84.1
Sep28° / 27°23117.112.15.0
Oct26° / 24°918.511.57.2
Nov23° / 21°395.810.97.8
Dec19° / 17°364.510.77.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14258
24357
34357
44357
54555
64654
74654
84753
94951
105050
115149
125248
135347
145446
155545
165644
175743
185743
195842
205842
215941
226040
236139
246139
256238
266337
276436
286436
296535
306634

Chance of precipitation in September

Any precipitation

Lai Chi Van gets around 231 mm of rain over 17.1 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 57% and peaks near 67% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
167
267
367
467
566
666
765
865
964
1064
1163
1262
1360
1459
1558
1657
1756
1855
1953
2052
2151
2250
2349
2448
2547
2646
2745
2844
2943
3042

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 64% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1000694
2001792
3001891
40011089
50021187
60021286
70031483
80031582
90041680
100041878
110051976
120162073
130172270
140172468
150182566
160192763
170192961
1801103158
1901103356
2001113553
2101113751
2201113949
2301124146
2401124344
2501134441
2602144639
2702154736
2812164834
2912174832
3013184930

Wind in September

Winds average 19 km/h in September.

Across September, daily wind ranges from about 17 km/h on the calmest days to 21 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
818light breeze
918light breeze
1018light breeze
1118light breeze
1218light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1820light breeze
1920light breeze
2020light breeze
2120light breeze
2220breezy
2320breezy
2420breezy
2520breezy
2620breezy
2720breezy
2820breezy
2921breezy
3021breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over September. Sunrise moves from 6:12 AM to 6:21 AM, and sunset from 6:39 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:126:39
212.46:126:38
312.46:136:37
412.46:136:36
512.46:136:35
612.36:146:34
712.36:146:33
812.36:146:32
912.36:146:31
1012.36:156:30
1112.26:156:29
1212.26:156:28
1312.26:166:27
1412.26:166:26
1512.16:166:25
1612.16:166:24
1712.16:176:23
1812.16:176:22
1912.16:176:21
2012.06:176:20
2112.06:186:19
2212.06:186:18
2312.06:186:17
2412.06:196:16
2511.96:196:15
2611.96:196:14
2711.96:206:13
2811.96:206:12
2911.86:206:11
3011.86:216:10

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.05 kWh/m².

For context, solar energy here swings from a low near 3.38 kWh/m² to a high of 5.63 kWh/m² in July across the year — September's 5.05 kWh/m² falls in the middle.

0246151015202530
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
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Lai Chi Van

In seasonPeak

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

Lai Chi Van sits in the Pacific typhoon belt; the season peaks July–October.

Lai Chi Van's monsoon runs May–September, when most of the year's rain falls.

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

Is September a good time to visit Lai Chi Van?

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

5.0
Sightseeing
9th-best month of the year
5.9
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Lai Chi Van for sightseeing.

What to pack for Lai Chi Van in September

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

In September, Lai Chi Van sees daytime highs around 28°C and nights near 27°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Lai Chi Van 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 offshore is warmest in August at about 29°C and coldest in January near 19°C.

It's comfortable for a long swim from Mar 12 to Dec 25 — about 9.5 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb19Cool
Mar20Refreshing
Apr23Refreshing
May26Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct27Warm
Nov24Refreshing
Dec21Refreshing

UV index in Lai Chi Van in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Lai Chi Van peaks around July 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 14UV 12Jan 10UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Very high
Apr10Very high
May10Very high
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Lai Chi Van 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 Lai Chi Van is worst in January — around 81 µg/m³ PM2.5 (unhealthy), about 5.8× the cleanest month (June, 14 µg/m³).

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyJan 1380 µg/m³Jun 2214 µg/m³
PM2.5 (µg/m³)Level
Jan81Unhealthy
Feb66Unhealthy
Mar54Poor
Apr38Poor
May24Moderate
Jun14Moderate
Jul15Moderate
Aug20Moderate
Sep32Moderate
Oct52Poor
Nov62Unhealthy
Dec75Unhealthy
Location & terrain

Where is Lai Chi Van?

Lai Chi Van sits at 22.1°N, 113.6°E, 22 m above sea level, in Macao. The nearest listed city is Luhuan, 0.0 km away.

TaipaZhuojiacunMacau

Topography around Lai Chi Van

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

Within 3 km, the terrain around Lai Chi Van has significant variations in elevation — a maximum elevation change of 358 m around an average of 30 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 452 m; within 80 km, large variations in elevation — a maximum elevation change of 1,004 m.

The land around Lai Chi Van is covered by trees (32%), water (31%) and artificial surfaces (24%) within 3 km, water (71%) within 16 km, and water (61%) within 80 km.

3 km
358 m
16 km
452 m
80 km
1,004 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Luhuan 0.0 km · Taipa 4.0 km · Zhuojiacun 5.0 km · 8.0 km · Macau 9.0 km · Zhuhai 18 km · San Tung Chung Hang 44 km · Tung Chung 44 km

Macao travel facts

Travel advisory
Level 3
Reconsider Travel
Power plugs
Type D / G / M
230 V · 50 Hz
Prices
≈ 55% of US
price level, 2025
GDP per capita
$75,902
2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Income group
High
World Bank
Religion
folk religion 59%Buddhist 17%none 15%Christian 7%

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 Lai Chi Van (22.1197°, 113.5511°, elevation 22 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).