Zhushan weather in September

In September, Zhushan sees average daytime highs of 27°C and overnight lows near 21°C, with 336 mm of rain across 24.1 wet days and about 12.1 hours of daylight. It is the 4th-warmest and 3rd-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 14% of the time in September, and the air most often feels muggy.

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 Zhushan's 8th-clearest and 10th-windiest month. For the whole year in context, see Zhushan's year-round climate.

Daytime high
27°
4th warmest
Overnight low
21°
9th coldest
Rainfall
336 mm
24.1 wet days
Daylight
12 h 06 min
5:48 AM – 5:56 PM
Cloud cover
69%
8th clearest
Wind
4 km/h
10th windiest
Solar energy
4.51 kWh/m²
Travel score
4.3
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 Zhushan reaches about 27°C in the afternoon and slips back to 21°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, September runs on par with August and about 2°C warmer than October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12821
22821
32821
42821
52821
62821
72721
82721
92721
102721
112721
122721
132721
142721
152721
162721
172721
182721
192721
202721
212721
222721
232721
242720
252720
262720
272720
282720
292720
302720

Zhushan weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 11°407.810.76.8
Feb20° / 12°498.911.26.6
Mar22° / 14°7812.611.86.4
Apr25° / 17°13117.812.55.6
May26° / 19°22123.413.14.6
Jun28° / 21°31924.613.43.8
Jul28° / 22°45727.613.33.4
Aug28° / 22°53028.812.83.6
Sep27° / 21°33624.112.14.3
Oct26° / 19°16416.411.45.9
Nov24° / 16°679.810.97.1
Dec21° / 13°447.410.67.1

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 22% of September, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12377
22377
32377
42476
52575
62674
72872
82971
93070
103169
113466
123466
133664
143664
153862
163961
174060
184159
194258
204258
214357
224357
234456
244555
254456
264555
274753
284753
294951
305050

Chance of precipitation in September

Any precipitation

Zhushan gets around 336 mm of rain over 24.1 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 80% and peaks near 88% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
188
288
388
487
587
687
786
885
985
1084
1183
1282
1382
1481
1580
1679
1778
1877
1977
2076
2176
2276
2376
2475
2575
2675
2775
2874
2974
3073

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 59% of days. Sticky, muggy-or-worse air turns up on roughly 94% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1024751
2024850
3024949
4025048
5025147
6035146
7035146
8135145
9145144
10145243
11145342
12155440
13055639
14065638
15065836
16065935
17076033
18076132
19076330
20076429
21076528
22176626
23176725
24186724
25186823
26186922
27196921
281106920
291107019
302117017

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

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 5:42 AM to 5:52 AM, and sunset from 6:12 PM to 5:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.55:426:12
212.55:436:11
312.45:436:09
412.45:436:08
512.45:446:07
612.45:446:06
712.35:456:05
812.35:456:04
912.35:456:03
1012.35:466:02
1112.35:466:01
1212.25:466:00
1312.25:475:59
1412.25:475:58
1512.25:475:57
1612.15:485:56
1712.15:485:55
1812.15:485:54
1912.15:495:52
2012.05:495:51
2112.05:495:50
2212.05:505:49
2312.05:505:48
2411.95:505:47
2511.95:515:46
2611.95:515:45
2711.95:515:44
2811.95:525:43
2911.85:525:42
3011.85:525:41

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 3.36 kWh/m² to a high of 5.25 kWh/m² in April across the year — September's 4.51 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.5Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.6Bright
134.6Bright
144.6Bright
154.6Bright
164.6Bright
174.5Bright
184.5Bright
194.5Bright
204.5Bright
214.5Bright
224.5Bright
234.5Bright
244.5Bright
254.5Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
Planning a trip in September

Hazard calendar for Zhushan

In seasonPeak

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

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

Zhushan'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 Zhushan?

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

4.3
Sightseeing
9th-best month of the year
4.4
Beach & pool
6th-best month of the year

September is a reasonable time to visit Zhushan for sightseeing.

What to pack for Zhushan in September

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

In September, Zhushan sees daytime highs around 27°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 24 days see rain.

light clothesrain gearsun protection

Sea temperature near Zhushan 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 52 km away) is warmest in August at about 29°C and coldest in January near 19°C.

It's comfortable for a long swim from Feb 21 to Jan 4 — about 10.5 months when the water holds above 20°C.

20°25°30°JanFebMarAprMayJunJulAugSepOctNovDeccoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan19Cool
Feb20Cool
Mar22Refreshing
Apr24Warm
May26Warm
Jun28Warm
Jul28Tropical
Aug29Tropical
Sep28Warm
Oct26Warm
Nov24Warm
Dec21Refreshing

UV index in Zhushan 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 Zhushan peaks around June 18 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeExtremeVery highHighJun 18UV 13Dec 21UV 6
UV index (midday)Level
Jan7High
Feb9Very high
Mar11Extreme
Apr10Very high
May11Extreme
Jun13Extreme
Jul12Extreme
Aug12Extreme
Sep11Extreme
Oct9Very high
Nov8Very high
Dec6High

Air quality in Zhushan 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 Zhushan 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 Zhushan?

Zhushan sits at 23.8°N, 120.7°E, 164 m above sea level, in Taiwan. The nearest listed city is Linnei, 6.0 km away.

Topography around Zhushan

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

Within 3 km, the terrain around Zhushan has significant variations in elevation — a maximum elevation change of 414 m around an average of 176 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,949 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,817 m.

The land around Zhushan is covered by trees (63%) within 3 km, trees (75%) within 16 km, and trees (59%) and water (21%) within 80 km.

3 km
414 m
16 km
1,949 m
80 km
3,817 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Linnei 6.0 km · Lugu 7.0 km · Douliu 15 km · Tianzhong 15 km · Nantou 18 km · Shetou 18 km · Citong 19 km · Beidou 21 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 Zhushan (23.7555°, 120.682°, elevation 164 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).