Leshan weather in September

In September, Leshan sees average daytime highs of 26°C and overnight lows near 20°C, with 128 mm of rain across 16.1 wet days and about 12.2 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 28°C in the first days to 24°C by the end. The sky is clear or mostly clear about 14% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Leshan's 7th-clearest and 6th-windiest month. For the whole year in context, see Leshan's year-round climate.

Daytime high
26°
5th warmest
Overnight low
20°
9th coldest
Rainfall
128 mm
16.1 wet days
Daylight
12 h 12 min
6:54 AM – 7:05 PM
Cloud cover
77%
7th clearest
Wind
5 km/h
6th windiest
Solar energy
2.91 kWh/m²
Travel score
5.4
out of 10

Leshan is prefecture-level city in Sichuan, China.

Air quality
Very high
PM2.5 42.9 µg/m³ · 2019
Density
52/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

Highs ease over the month, from about 28°C in the first days to 24°C by the end.

A typical September day in Leshan reaches about 26°C in the afternoon and slips back to 20°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°C. Set against its neighbours, September runs about 4°C cooler than August and about 5°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12822
22822
32822
42822
52822
62822
72722
82721
92721
102721
112721
122621
132621
142621
152621
162620
172620
182520
192520
202520
212520
222520
232520
242419
252419
262419
272419
282419
292419
302419

How September really feels in Leshan

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.

Leshan weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 4612.10.510.32.2
Feb13° / 4111.20.110.93.2
Mar17° / 11°4811.4011.85.1
Apr23° / 15°7312.6012.76.0
May27° / 19°8311.9013.56.1
Jun29° / 22°12514.1013.94.9
Jul31° / 24°22819.7013.73.6
Aug30° / 24°24219.4013.13.8
Sep26° / 20°12816.1012.25.4
Oct21° / 16°8417.1011.35.2
Nov17° / 12°5913010.54.6
Dec12° / 4211.90.110.12.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% 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 77%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12971
22971
32971
42971
52971
62971
72773
82773
92773
102674
112674
122575
132476
142476
152476
162278
172278
182278
192179
201981
211981
221981
231882
241882
251882
261783
271684
281783
291783
301783

Chance of precipitation in September

Any precipitation

Leshan gets around 128 mm of rain over 16.1 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 54% and peaks near 57% on the wettest days.

0%20%40%60%151015202530
Rain chance (%)
157
256
356
456
556
655
755
855
955
1055
1154
1254
1354
1454
1554
1653
1753
1853
1953
2053
2153
2253
2353
2454
2554
2654
2754
2854
2955
3055

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 47% of days. Sticky, muggy-or-worse air turns up on roughly 66% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
100749367
200850357
300951346
4011150326
5011350315
6011451295
7011652274
8011851264
9012051244
10022250233
11022450223
12032549203
13032749192
14032948182
15043048162
16043148152
17053348131
18053448121
19063547111
20063647101
2107374791
2207384681
2318384671
2419394560
25110404450
26211404340
27212414140
28213414030
29314423830
30316433620

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 36 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 54 minutes over September. Sunrise moves from 6:46 AM to 7:02 AM, and sunset from 7:23 PM to 6:47 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:467:23
212.66:467:22
312.66:477:21
412.56:487:20
512.56:487:18
612.56:497:17
712.46:497:16
812.46:507:15
912.46:507:13
1012.46:517:12
1112.36:517:11
1212.36:527:10
1312.36:527:08
1412.26:537:07
1512.26:537:06
1612.26:547:05
1712.16:557:03
1812.16:557:02
1912.16:567:01
2012.16:566:59
2112.06:576:58
2212.06:576:57
2312.06:586:56
2411.96:586:54
2511.96:596:53
2611.97:006:52
2711.87:006:50
2811.87:016:49
2911.87:016:48
3011.77:026:47

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.91 kWh/m².

For context, solar energy here swings from a low near 1.82 kWh/m² to a high of 4.42 kWh/m² in July across the year — September's 2.91 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.6Moderate
23.5Moderate
33.5Moderate
43.4Moderate
53.4Moderate
63.3Moderate
73.3Moderate
83.2Moderate
93.2Moderate
103.1Moderate
113.1Moderate
123.0Moderate
133.0Moderate
142.9Moderate
152.9Moderate
162.9Moderate
172.8Moderate
182.8Moderate
192.7Moderate
202.7Moderate
212.6Moderate
222.6Moderate
232.6Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.5Moderate
282.4Moderate
292.4Moderate
302.4Moderate
Planning a trip in September

Hazard calendar for Leshan

In seasonPeak

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

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

Leshan's monsoon runs June–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 Leshan?

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

5.4
Sightseeing
3rd-best month of the year
5.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Leshan for sightseeing.

What to pack for Leshan in September

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

In September, Leshan sees daytime highs around 26°C and nights near 20°C. Pack rain gear. Worth having: light clothes. About 16 days see rain.

rain gearlight clothes

UV index in Leshan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Leshan peaks around June 19 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 19UV 10Jan 11UV 3
UV index (midday)Level
Jan3Moderate
Feb5High
Mar7High
Apr6High
May10Very high
Jun10Extreme
Jul10Very high
Aug7Very high
Sep8Very high
Oct7High
Nov4Moderate
Dec3Moderate

Air quality in Leshan 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 Leshan is worst in March — around 53 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (August, 31 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Leshan's WHO annual average of 42.9 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMar 1353 µg/m³Aug 1031 µg/m³
PM2.5 (µg/m³)Level
Jan50Poor
Feb51Poor
Mar53Poor
Apr47Poor
May49Poor
Jun37Poor
Jul31Moderate
Aug31Moderate
Sep36Poor
Oct40Poor
Nov44Poor
Dec45Poor
Location & terrain

Where is Leshan?

Leshan sits at 29.6°N, 103.8°E, 375 m above sea level, in China. The nearest listed city is Chengdu, 126 km away.

GuiyangShangri-LaLijiangKunmingDaliFenghuang

Topography around Leshan

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

Within 3 km, the terrain around Leshan has only modest variations in elevation — a maximum elevation change of 105 m around an average of 382 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 249 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,276 m.

The land around Leshan is covered by trees (54%) and artificial surfaces (24%) within 3 km, trees (66%) within 16 km, and trees (81%) within 80 km.

3 km
105 m
16 km
249 m
80 km
3,276 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Chengdu 126 km · Chongqing 270 km · Guiyang 440 km · Shangri-La 440 km · Lijiang 458 km · Kunming 513 km · Dali 564 km · Fenghuang 597 km

China travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / I
220 V · 50 Hz
Prices
≈ 47% of US
price level, 2025
GDP per capita
$13,862
2025
Happiness
6.1 / 10
World Happiness, 2025
Homicide rate
0.5
per 100k, 2020
Road deaths
17.4
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 464
Religion
unaffiliated 52%folk religion 22%Buddhist 18%Christian 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 Leshan (29.5623°, 103.7639°, elevation 375 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). 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).