Xiulin weather in September

In September, Xiulin sees average daytime highs of 27°C and overnight lows near 25°C, with 356 mm of rain across 20.7 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 26% 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 Xiulin's 4th-clearest and 8th-windiest month. For the whole year in context, see Xiulin's year-round climate.

Daytime high
27°
4th warmest
Overnight low
25°
9th coldest
Rainfall
356 mm
20.7 wet days
Daylight
12 h 06 min
5:44 AM – 5:52 PM
Cloud cover
64%
4th clearest
Wind
14 km/h
8th windiest
Solar energy
4.68 kWh/m²
Travel score
4.9
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical September day in Xiulin reaches about 27°C in the afternoon and slips back to 25°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 28°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°C warmer than October.

20°23°25°28°30°151015202530
Avg high (°C)Avg low (°C)
12826
22826
32826
42726
52726
62726
72726
82726
92726
102726
112726
122725
132725
142725
152725
162725
172725
182725
192725
202725
212725
222725
232625
242625
252625
262625
272625
282625
292625
302624

How September really feels in Xiulin

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.

Xiulin weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 17°29626.710.73.7
Feb19° / 17°24723.411.23.9
Mar21° / 19°17321.911.84.6
Apr23° / 21°1571912.55.2
May25° / 24°24221.613.24.9
Jun27° / 26°20816.513.55.1
Jul28° / 26°21414.213.35.4
Aug28° / 26°24717.812.85.1
Sep27° / 25°35620.712.14.9
Oct25° / 23°31219.211.45.4
Nov23° / 21°30020.910.85.0
Dec20° / 18°29324.910.54.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24456
34456
44456
54456
64456
74555
84555
94654
104753
114852
124753
134753
144753
154654
164654
174555
184555
194456
204456
214357
224357
234357
244456
254456
264357
274357
284555
294555
304654

Chance of precipitation in September

Any precipitation

Xiulin gets around 356 mm of rain over 20.7 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 68% and peaks near 72% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
165
265
365
465
565
665
765
865
965
1065
1165
1265
1366
1466
1567
1668
1769
1869
1970
2071
2171
2272
2372
2472
2572
2672
2772
2872
2972
3072

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 68% of days. Sticky, muggy-or-worse air turns up on roughly 97% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10046729
20056728
30056827
40066925
50067024
60077023
70077221
80087220
90197218
1001107217
1101107316
1202117215
1302127214
1403137113
1503157012
1603167011
1704176910
180418699
190419689
200520678
210521668
220522667
230623647
240624637
250624646
261625626
271726615
281726615
291727605
301827604

Wind in September

Winds average 14 km/h in September.

Across September, daily wind ranges from about 12 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
112calm
212calm
312calm
412calm
512light breeze
612light breeze
712light breeze
812light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light 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 5:38 AM to 5:49 AM, and sunset from 6:08 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:386:08
212.55:396:07
312.45:396:06
412.45:396:05
512.45:406:04
612.45:406:03
712.45:416:02
812.35:416:01
912.35:416:00
1012.35:425:58
1112.35:425:57
1212.25:425:56
1312.25:435:55
1412.25:435:54
1512.25:435:53
1612.15:445:52
1712.15:445:51
1812.15:445:50
1912.15:455:49
2012.05:455:48
2112.05:455:47
2212.05:465:45
2312.05:465:44
2411.95:475:43
2511.95:475:42
2611.95:475:41
2711.95:485:40
2811.85:485:39
2911.85:485:38
3011.85:495:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.68 kWh/m².

For context, solar energy here swings from a low near 2.1 kWh/m² to a high of 6.01 kWh/m² in July across the year — September's 4.68 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
104.9Bright
114.9Bright
124.9Bright
134.8Bright
144.8Bright
154.8Bright
164.7Bright
174.7Bright
184.6Bright
194.6Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.3Bright
254.3Bright
264.3Bright
274.3Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for Xiulin

In seasonPeak

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

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

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

Is September a good time to visit Xiulin?

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

4.9
Sightseeing
7th-best month of the year
5.0
Beach & pool
4th-best month of the year

September is a reasonable time to visit Xiulin for sightseeing.

What to pack for Xiulin in September

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

In September, Xiulin sees daytime highs around 27°C and nights near 25°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.

rain gearlight clothessun protection

Sea temperature near Xiulin 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 24°C.

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

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan24Refreshing
Feb24Refreshing
Mar24Warm
Apr26Warm
May27Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct27Warm
Nov26Warm
Dec25Warm

UV index in Xiulin in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Xiulin peaks around June 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 21UV 12Dec 19UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Very high
Apr8Very high
May10Very high
Jun13Extreme
Jul12Extreme
Aug11Extreme
Sep11Extreme
Oct9Very high
Nov7Very high
Dec6High

Air quality in Xiulin 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 Xiulin is worst in March — around 22 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateMar 2422 µg/m³Oct 1811 µg/m³
PM2.5 (µg/m³)Level
Jan15Moderate
Feb17Moderate
Mar22Moderate
Apr22Moderate
May17Moderate
Jun15Moderate
Jul11Good
Aug12Good
Sep11Good
Oct11Good
Nov11Good
Dec13Moderate
Location & terrain

Where is Xiulin?

Xiulin sits at 24.1°N, 121.6°E, 35 m above sea level, in Taiwan. The nearest listed city is Hualien, 16 km away.

PuliYilanZhudongDaxiSanxiaWufengMiaoli

Topography around Xiulin

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

Within 3 km, the terrain around Xiulin has very significant variations in elevation — a maximum elevation change of 1,443 m around an average of 245 m above sea level; within 16 km, extreme variations in elevation — a maximum elevation change of 2,860 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,837 m.

The land around Xiulin is covered by trees (68%) within 3 km, trees (54%) and water (40%) within 16 km, and trees (65%) and water (31%) within 80 km.

3 km
1,443 m
16 km
2,860 m
80 km
3,837 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Hualien 16 km · Puli 69 km · Yilan 72 km · Zhudong 87 km · Daxi 91 km · Sanxia 94 km · Wufeng 94 km · Miaoli 95 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 Xiulin (24.1202°, 121.6263°, elevation 35 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).