Chiayi City weather in April

In April, Chiayi City sees average daytime highs of 26°C and overnight lows near 19°C, with 144 mm of rain across 16 wet days and about 12.5 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 25°C in the first days to 27°C by the end. The sky is clear or mostly clear about 28% of the time in April, and the air most often feels muggy.

Daylight stretches from about 12 h 12 min at the start of April to 12 h 48 min by month's end. Set against the rest of the year, April is Chiayi City's 7th-clearest and 8th-windiest month. For the whole year in context, see Chiayi City's year-round climate.

Daytime high
26°
7th warmest
Overnight low
19°
6th coldest
Rainfall
144 mm
16 wet days
Daylight
12 h 30 min
5:42 AM – 6:15 PM
Cloud cover
60%
7th clearest
Wind
6 km/h
8th windiest
Solar energy
5.62 kWh/m²
Travel score
5.7
out of 10

Temperature in April

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 25°C in the first days to 27°C by the end.

A typical April day in Chiayi City reaches about 26°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 29°C. Set against its neighbours, April runs about 3°C warmer than March and about 2°C cooler than May.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12517
22517
32517
42517
52518
62518
72518
82518
92618
102618
112618
122618
132618
142618
152619
162619
172619
182619
192719
202719
212719
222719
232719
242720
252720
262720
272720
282720
292720
302720

How April really feels in Chiayi City

Once humidity and wind are folded in, April 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

April sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Chiayi City weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 12°531010.76.6
Feb21° / 13°6211.611.26.3
Mar24° / 16°8513.311.86.4
Apr26° / 19°1441612.55.7
May28° / 21°27022.113.14.3
Jun29° / 23°36524.213.43.3
Jul30° / 24°55526.713.33.0
Aug30° / 24°66728.512.82.9
Sep29° / 23°4362412.13.6
Oct27° / 20°20718.611.45.3
Nov25° / 18°811210.96.7
Dec22° / 14°6010.710.66.8

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 20% of April, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14951
25149
35149
45149
55149
65149
75149
85050
95050
105050
115050
125050
134951
144951
154951
164951
174852
184951
194852
204852
214753
224654
234555
244555
254555
264357
274258
284159
294060
304060

Chance of precipitation in April

Any precipitation

Chiayi City gets around 144 mm of rain over 16 wet days in April. 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 62% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
150
250
350
451
551
651
751
851
952
1052
1152
1252
1352
1453
1553
1653
1753
1854
1954
2054
2155
2255
2356
2456
2557
2658
2759
2860
2961
3062

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the muggy band about 56% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
151653260
251552280
351451300
441351320
541250340
641150360
731048380
83947400
93945420
103843451
113841471
123739501
132737531
142735542
152633572
162630602
172628613
182526643
191525663
201523674
211421704
221420705
231418725
241317736
250316756
260315757
270214768
280214768
290213769
3001137610

Wind in April

Winds average 6 km/h in April.

Across April, daily wind ranges from about 5 km/h on the calmest days to 6 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
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
285calm
295calm
305calm

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 12 min at the start of April to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over April. Sunrise moves from 5:57 AM to 5:30 AM, and sunset from 6:09 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.25:576:09
212.25:566:09
312.35:556:10
412.35:546:10
512.35:536:10
612.35:526:11
712.35:516:11
812.45:506:12
912.45:496:12
1012.45:486:12
1112.45:476:13
1212.55:466:13
1312.55:456:14
1412.55:446:14
1512.55:436:14
1612.55:426:15
1712.65:416:15
1812.65:406:16
1912.65:396:16
2012.65:386:16
2112.75:386:17
2212.75:376:17
2312.75:366:18
2412.75:356:18
2512.75:346:19
2612.85:336:19
2712.85:336:19
2812.85:326:20
2912.85:316:20
3012.85:306:21

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.62 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.6 kWh/m² to a high of 5.62 kWh/m² in April across the year — April's 5.62 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.7Bright
255.7Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
Planning a trip in April

Hazard calendar for Chiayi City

In seasonPeak

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

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

Chiayi City'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 April a good time to visit Chiayi City?

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

5.7
Sightseeing
6th-best month of the year
5.5
Beach & pool
2nd-best month of the year

April is a reasonable time to visit Chiayi City for sightseeing.

What to pack for Chiayi City in April

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

In April, Chiayi City sees daytime highs around 26°C and nights near 19°C. Pack rain gear. Worth having: light clothes and sun protection. About 16 days see rain.

rain gearlight clothessun protection

Sea temperature near Chiayi City in April

The nearest coast averages about 25°C in April — 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 July at about 29°C and coldest in January near 22°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
Jan22Refreshing
Feb22Refreshing
Mar23Refreshing
Apr25Warm
May27Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct27Warm
Nov25Warm
Dec23Refreshing

UV index in Chiayi City in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chiayi City 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 Chiayi City in April

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where April falls, not just the annual average.

Air quality in Chiayi City is worst in March — around 40 µg/m³ PM2.5 (poor), about 1.7× the cleanest month (July, 23 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModerateMar 1739 µg/m³Jul 1323 µg/m³
PM2.5 (µg/m³)Level
Jan36Poor
Feb36Poor
Mar40Poor
Apr36Poor
May28Moderate
Jun24Moderate
Jul23Moderate
Aug25Moderate
Sep31Moderate
Oct33Moderate
Nov34Moderate
Dec33Moderate
Location & terrain

Where is Chiayi City?

Chiayi City sits at 23.5°N, 120.4°E, 45 m above sea level, in Taiwan. The nearest listed city is Taibao, 12 km away.

XinyingDouliuCitongBudaiErlun

Topography around Chiayi City

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

Within 3 km, the terrain around Chiayi City has only modest variations in elevation — a maximum elevation change of 84 m around an average of 40 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 860 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,887 m.

The land around Chiayi City is covered by artificial surfaces (65%) and trees (23%) within 3 km, trees (46%) and cropland (37%) within 16 km, and trees (47%) and water (32%) within 80 km.

3 km
84 m
16 km
860 m
80 km
3,887 m
treesgrasslandcroplandartificial surfaceswater
April weather nearby: Taibao 12 km · Xingang 14 km · Beigang 18 km · Xinying 24 km · Douliu 27 km · Citong 31 km · Budai 31 km · Erlun 33 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 Chiayi City (23.4792°, 120.4489°, elevation 45 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).