Xiluo weather in September

In September, Xiluo sees average daytime highs of 30°C and overnight lows near 24°C, with 267 mm of rain across 17.9 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 4th-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 21% 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 Xiluo's 8th-clearest and 11th-windiest month. For the whole year in context, see Xiluo's year-round climate.

Daytime high
30°
4th warmest
Overnight low
24°
9th coldest
Rainfall
267 mm
17.9 wet days
Daylight
12 h 06 min
5:48 AM – 5:57 PM
Cloud cover
65%
8th clearest
Wind
6 km/h
11th windiest
Solar energy
4.79 kWh/m²
Travel score
3.9
out of 10

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 Xiluo reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 32°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)
13124
23124
33124
43124
53124
63124
73124
83124
93124
103124
113124
123124
133124
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263023
273023
283023
293023
303023

How September really feels in Xiluo

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.

Xiluo weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 13°569.810.76.8
Feb22° / 14°6611.211.26.5
Mar24° / 16°9812.711.86.6
Apr27° / 20°14714.912.55.7
May29° / 22°24519.213.14.2
Jun31° / 24°31321.313.43.2
Jul31° / 25°35921.913.33.0
Aug31° / 25°44123.912.83.0
Sep30° / 24°26717.912.13.9
Oct29° / 22°1201111.45.8
Nov26° / 19°608.310.87.2
Dec23° / 15°618.910.67.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 57%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12773
22773
32773
42872
53070
63070
73268
83367
93466
103763
113862
124060
134159
144456
154456
164555
174654
184852
194852
204951
215050
225050
235149
245248
255248
265347
275446
285446
295644
305644

Chance of precipitation in September

Any precipitation

Xiluo gets around 267 mm of rain over 17.9 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 59% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
172
272
371
470
570
669
768
867
966
1065
1164
1262
1361
1460
1558
1657
1756
1855
1954
2053
2152
2252
2352
2451
2551
2651
2751
2850
2950
3050

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 55% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1025147
2025246
3025345
4035245
5135145
6145144
7145144
8155044
9155143
10165043
11175042
12185041
13195040
141105039
151115038
161115236
171125235
181125433
191135432
201135630
211135729
221135927
232135926
242136025
252136124
263136123
273136222
284136221
295136220
305146219

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:43 AM to 5:53 AM, and sunset from 6:12 PM to 5:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:436:12
212.55:446:11
312.45:446:10
412.45:446:09
512.45:456:08
612.45:456:07
712.35:456:06
812.35:466:05
912.35:466:04
1012.35:466:03
1112.35:476:02
1212.25:476:01
1312.25:476:00
1412.25:485:59
1512.25:485:58
1612.15:485:57
1712.15:495:55
1812.15:495:54
1912.15:495:53
2012.05:505:52
2112.05:505:51
2212.05:505:50
2312.05:515:49
2411.95:515:48
2511.95:515:47
2611.95:525:46
2711.95:525:45
2811.95:535:44
2911.85:535:43
3011.85:535:42

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.79 kWh/m².

For context, solar energy here swings from a low near 3.59 kWh/m² to a high of 5.57 kWh/m² in April across the year — September's 4.79 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.7Bright
54.7Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.8Bright
204.8Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.7Bright
274.7Bright
284.7Bright
294.7Bright
304.7Bright
Planning a trip in September

Hazard calendar for Xiluo

In seasonPeak

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

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

Xiluo'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 Xiluo?

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

3.9
Sightseeing
9th-best month of the year
5.5
Beach & pool
7th-best month of the year

September is a weaker month for outdoor sightseeing in Xiluo.

What to pack for Xiluo in September

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

In September, Xiluo sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 18 days see rain.

light clothesrain gearsun protection

Sea temperature near Xiluo 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 35 km away) is warmest in August at about 29°C and coldest in January near 21°C.

The water stays above 20°C all year — warm enough for a swim any month.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan21Refreshing
Feb21Refreshing
Mar22Refreshing
Apr24Warm
May26Warm
Jun28Warm
Jul29Tropical
Aug29Tropical
Sep28Warm
Oct26Warm
Nov25Warm
Dec22Refreshing

UV index in Xiluo 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 Xiluo peaks around June 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highHighJun 17UV 12Dec 20UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Very high
Apr8Very high
May10Very high
Jun12Extreme
Jul10Extreme
Aug11Extreme
Sep9Very high
Oct7Very high
Nov7High
Dec6High

Air quality in Xiluo 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 Xiluo is worst in March — around 56 µg/m³ PM2.5 (unhealthy), about 1.7× the cleanest month (July, 33 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorMar 1855 µg/m³Jul 1133 µg/m³
PM2.5 (µg/m³)Level
Jan45Poor
Feb48Poor
Mar56Unhealthy
Apr50Poor
May41Poor
Jun34Moderate
Jul33Moderate
Aug36Poor
Sep41Poor
Oct38Poor
Nov41Poor
Dec39Poor
Location & terrain

Where is Xiluo?

Xiluo sits at 23.8°N, 120.5°E, 34 m above sea level, in Taiwan. The nearest listed city is Citong, 6.0 km away.

Topography around Xiluo

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

Within 3 km, the terrain around Xiluo has only modest variations in elevation — a maximum elevation change of 34 m around an average of 29 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 264 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,887 m.

The land around Xiluo is covered by cropland (40%) and artificial surfaces (26%) within 3 km, cropland (56%) and artificial surfaces (20%) within 16 km, and trees (45%) and water (32%) within 80 km.

3 km
34 m
16 km
264 m
80 km
3,887 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Citong 6.0 km · Erlun 6.0 km · Beidou 10 km · Pitou 11 km · Tianwei 12 km · Douliu 13 km · Tianzhong 14 km · Erlin 15 km

Taiwan travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
110 / 220 V · 60 Hz
Happiness
6.7 / 10
World Happiness, 2025
Religion
Buddhist 35%Taoist 33%none or unspecified 18%folk religion approximately 10%

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 Xiluo (23.7989°, 120.4634°, elevation 34 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).