Leighton Hill weather in September

In September, Leighton Hill sees average daytime highs of 29°C and overnight lows near 26°C, with 214 mm of rain across 16.3 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 29°C through the month. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Leighton Hill's 5th-clearest and 10th-windiest month. For the whole year in context, see Leighton Hill's year-round climate.

Daytime high
29°
3rd warmest
Overnight low
26°
9th coldest
Rainfall
214 mm
16.3 wet days
Daylight
12 h 06 min
6:14 AM – 6:21 PM
Cloud cover
58%
5th clearest
Wind
15 km/h
10th windiest
Solar energy
5.11 kWh/m²
Travel score
4.7
out of 10

Leighton Hill is Hill and neighborhood in Hong Kong.

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 Leighton Hill reaches about 29°C in the afternoon and slips back to 26°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 31°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)
13027
23027
33027
42927
52927
62927
72926
82926
92926
102926
112926
122926
132926
142926
152926
162926
172926
182926
192926
202926
212926
222926
232926
242926
252926
262926
272926
282826
292825
302825

How September really feels in Leighton Hill

Once humidity and wind are folded in, September averages 26 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
26
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.

Leighton Hill 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°29510.86.7
Feb19° / 16°448.111.26.2
Mar21° / 18°6910.411.86.3
Apr24° / 22°11612.612.56.2
May27° / 25°21017.313.15.2
Jun29° / 27°30921.513.33.8
Jul30° / 27°24820.413.23.8
Aug30° / 27°30721.912.83.7
Sep29° / 26°21416.312.14.7
Oct27° / 24°756.611.57.3
Nov24° / 20°395.110.97.9
Dec20° / 16°344.510.77.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 48%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13862
23862
33961
43961
54060
64159
74258
84357
94555
104753
114852
125050
135149
145248
155347
165446
175545
185644
195743
205743
215842
225941
236040
246139
256238
266238
276337
286337
296436
306535

Chance of precipitation in September

Any precipitation

Leighton Hill gets around 214 mm of rain over 16.3 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 54% and peaks near 69% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
169
268
368
467
566
666
765
864
963
1062
1160
1259
1357
1456
1554
1653
1751
1850
1949
2048
2146
2245
2344
2443
2542
2641
2740
2839
2938
3037

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 58% 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 (%)
1001891
2001990
30011188
40011287
50021484
60021682
70021781
80031978
90032176
100142273
110142471
120152668
130162766
140172963
150183160
160193258
1701103455
1801103653
1901113849
2001124047
2101134244
2201144341
2301154539
2401154737
2501164834
2602174932
2712185029
2812195127
2912205225
3013225024

Wind in September

Winds average 15 km/h in September.

Across September, daily wind ranges from about 13 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1716light breeze
1816light breeze
1916light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 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 42 minutes over September. Sunrise moves from 6:09 AM to 6:18 AM, and sunset from 6:37 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:096:37
212.46:106:36
312.46:106:35
412.46:106:34
512.46:116:33
612.36:116:32
712.36:116:31
812.36:126:30
912.36:126:29
1012.36:126:28
1112.26:126:27
1212.26:136:26
1312.26:136:24
1412.26:136:23
1512.16:146:22
1612.16:146:21
1712.16:146:20
1812.16:146:19
1912.16:156:18
2012.06:156:17
2112.06:156:16
2212.06:166:15
2312.06:166:14
2412.06:166:13
2511.96:166:12
2611.96:176:11
2711.96:176:10
2811.96:176:09
2911.86:186:08
3011.86:186:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.11 kWh/m².

For context, solar energy here swings from a low near 3.38 kWh/m² to a high of 5.66 kWh/m² in July across the year — September's 5.11 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.1Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Leighton Hill

In seasonPeak

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

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

Leighton Hill'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 Leighton Hill?

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

4.7
Sightseeing
9th-best month of the year
6.0
Beach & pool
3rd-best month of the year

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

What to pack for Leighton Hill in September

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

In September, Leighton Hill sees daytime highs around 29°C and nights near 26°C. Pack light clothes and rain gear. Worth having: sun protection. About 16 days see rain.

light clothesrain gearsun protection

Sea temperature near Leighton Hill 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 18 km away) is warmest in August at about 29°C and coldest in January near 20°C.

It's comfortable for a long swim from Feb 26 to Jan 6 — about 10.4 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan20Cool
Feb20Cool
Mar21Refreshing
Apr23Refreshing
May26Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct27Warm
Nov24Refreshing
Dec21Refreshing

UV index in Leighton Hill 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 Leighton Hill peaks around July 13 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 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 13UV 12Jan 11UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar9Very high
Apr9Very high
May10Very high
Jun12Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct8Very high
Nov7High
Dec6High

Air quality in Leighton Hill 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 Leighton Hill is worst in January — around 183 µg/m³ PM2.5 (very unhealthy), about 2.5× the cleanest month (July, 73 µg/m³).

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

0306090120150180210JanFebMarAprMayJunJulAugSepOctNovDecVery unhealthyUnhealthyVery unhealthyJan 21181 µg/m³Jul 1674 µg/m³
PM2.5 (µg/m³)Level
Jan183Very unhealthy
Feb175Very unhealthy
Mar165Very unhealthy
Apr149Unhealthy
May115Unhealthy
Jun83Unhealthy
Jul73Unhealthy
Aug85Unhealthy
Sep119Unhealthy
Oct127Unhealthy
Nov157Very unhealthy
Dec156Very unhealthy
Location & terrain

Where is Leighton Hill?

Leighton Hill sits at 22.3°N, 114.2°E, 44 m above sea level, in Hong Kong. The nearest listed city is Hong Kong, 1.0 km away.

Topography around Leighton Hill

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

Within 3 km, the terrain around Leighton Hill has significant variations in elevation — a maximum elevation change of 467 m around an average of 118 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 941 m; within 80 km, large variations in elevation — a maximum elevation change of 984 m.

The land around Leighton Hill is covered by trees (51%) and artificial surfaces (29%) within 3 km, water (57%) and trees (30%) within 16 km, and water (65%) and trees (22%) within 80 km.

3 km
467 m
16 km
941 m
80 km
984 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Hong Kong 1.0 km · Wan Chai 1.0 km · Hong Kong Island 1.0 km · Fortress Hill 2.0 km · City Garden 2.0 km · Braemar Hill 2.0 km · Tsim Sha Tsui 3.0 km · The Peak 3.0 km

Hong Kong travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G / M
220 V · 50 Hz
Prices
≈ 71% of US
price level, 2025
GDP per capita
$56,983
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.4
per 100k, 2023
Income group
High
World Bank
English
Moderate
EF EPI 538
Religion
other or none 54%Buddhist or Taoist 28%Protestant 7%Roman Catholic 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 Leighton Hill (22.2761°, 114.184°, elevation 44 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).