Guilin weather in September

In September, Guilin sees average daytime highs of 30°C and overnight lows near 23°C, with 72 mm of rain across 9.5 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 31°C in the first days to 29°C by the end. The sky is clear or mostly clear about 36% of the time in September, and the air most often feels oppressive.

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 Guilin's 4th-clearest and 8th-windiest month. For the whole year in context, see Guilin's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
23°
9th coldest
Rainfall
72 mm
9.5 wet days
Daylight
12 h 06 min
6:29 AM – 6:38 PM
Cloud cover
57%
4th clearest
Wind
8 km/h
8th windiest
Solar energy
4.51 kWh/m²
Travel score
4.8
out of 10

Guilin is prefecture-level city in Guangxi, China.

Air quality
Very high
PM2.5 38.5 µg/m³ · 2018
Density
57/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 31°C in the first days to 29°C by the end.

A typical September day in Guilin reaches about 30°C in the afternoon and slips back to 23°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 34°C. Set against its neighbours, September runs about 2°C cooler than August and about 5°C warmer than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13224
23224
33224
43124
53124
63124
73124
83124
93123
103123
113123
123123
133123
143123
153123
163123
173123
183022
193022
203022
213022
223022
233022
243022
252921
262921
272921
282921
292921
302921

How September really feels in Guilin

Once humidity and wind are folded in, September averages 16 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
16
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.

Guilin weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan13° / 9613.610.63.1
Feb15° / 10614.611.13.6
Mar18° / 12°22221.211.84.1
Apr23° / 17°2842112.64.8
May27° / 21°34321.413.24.5
Jun30° / 24°37322.713.53.4
Jul32° / 25°22020.113.43.0
Aug32° / 25°1441612.93.3
Sep30° / 23°729.512.24.8
Oct26° / 18°717.411.47.1
Nov21° / 13°899.410.86.6
Dec15° / 699.110.54.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% 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 (%)
14159
24159
34258
44357
54456
64555
74555
84753
94852
105050
115149
125248
135248
145446
155446
165545
175545
185644
195644
205644
215644
225743
235743
245743
255743
265842
275842
285842
295941
305941

Chance of precipitation in September

Any precipitation

Guilin gets around 72 mm of rain over 9.5 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 32% and peaks near 42% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
142
241
341
440
539
638
737
837
936
1035
1134
1233
1333
1432
1531
1630
1730
1829
1929
2028
2128
2227
2327
2426
2526
2625
2725
2824
2924
3023

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 68% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1016235218
2017235217
3027245017
4128244916
5129254816
6139254715
71310264514
82311264414
92412264313
103412264212
113513264111
124614264010
134715263910
14581626379
15581726368
16691826347
176101926336
186112027315
197112127295
207122227284
217122327264
227132427254
238142527243
248152526233
258162626213
269172626203
2710182625192
2810192625182
2911202624172
3012212624162

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
299calm
309calm

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 6:23 AM to 6:34 AM, and sunset from 6:54 PM to 6:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:236:54
212.56:236:53
312.56:246:52
412.46:246:51
512.46:256:50
612.46:256:49
712.46:256:48
812.36:266:47
912.36:266:45
1012.36:266:44
1112.36:276:43
1212.26:276:42
1312.26:286:41
1412.26:286:40
1512.26:286:39
1612.16:296:38
1712.16:296:36
1812.16:306:35
1912.16:306:34
2012.06:306:33
2112.06:316:32
2212.06:316:31
2312.06:326:30
2411.96:326:28
2511.96:326:27
2611.96:336:26
2711.96:336:25
2811.86:346:24
2911.86:346:23
3011.86:346:22

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.51 kWh/m².

For context, solar energy here swings from a low near 2.11 kWh/m² to a high of 4.8 kWh/m² in August across the year — September's 4.51 kWh/m² sits near the top of that range.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.7Bright
74.6Bright
84.6Bright
94.6Bright
104.6Bright
114.6Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.3Bright
294.3Bright
304.3Bright
Planning a trip in September

Hazard calendar for Guilin

In seasonPeak

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

Guilin's rainy season runs March–July, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Guilin?

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

4.8
Sightseeing
3rd-best month of the year
6.8
Beach & pool
2nd-best month of the year

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

What to pack for Guilin in September

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

In September, Guilin sees daytime highs around 30°C and nights near 23°C. Pack light clothes. Worth having: rain gear and sun protection. About 10 days see rain.

light clothesrain gearsun protection

UV index in Guilin in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Guilin peaks around July 15 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJul 15UV 11Jan 11UV 5
UV index (midday)Level
Jan5Moderate
Feb7Very high
Mar10Very high
Apr7High
May9Very high
Jun11Extreme
Jul12Extreme
Aug10Very high
Sep9Very high
Oct7Very high
Nov6High
Dec5High

Air quality in Guilin 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 Guilin is worst in March — around 49 µg/m³ PM2.5 (poor), about 1.9× the cleanest month (July, 25 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Guilin's WHO annual average of 38.5 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMar 1648 µg/m³Jul 1626 µg/m³
PM2.5 (µg/m³)Level
Jan48Poor
Feb45Poor
Mar49Poor
Apr44Poor
May37Poor
Jun27Moderate
Jul25Moderate
Aug27Moderate
Sep35Moderate
Oct37Poor
Nov40Poor
Dec47Poor
Location & terrain

Where is Guilin?

Guilin sits at 25.3°N, 110.3°E, 141 m above sea level, in China. The nearest listed city is Yangshuo, 59 km away.

NanningGuangzhouGuiyangZhangjiajieThị Trấn Trùng KhánhZhuhai

Topography around Guilin

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

Within 3 km, the terrain around Guilin has only modest variations in elevation — a maximum elevation change of 156 m around an average of 163 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 758 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,979 m.

The land around Guilin is covered by artificial surfaces (64%) and trees (26%) within 3 km, trees (53%) and artificial surfaces (20%) within 16 km, and trees (88%) within 80 km.

3 km
156 m
16 km
758 m
80 km
1,979 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Yangshuo 59 km · Fenghuang 303 km · Nanning 340 km · Guangzhou 384 km · Guiyang 386 km · Zhangjiajie 428 km · Thị Trấn Trùng Khánh 470 km · Zhuhai 471 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 Guilin (25.2802°, 110.2964°, elevation 141 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. 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).