Hualien weather in May

In May, Hualien sees average daytime highs of 23°C and overnight lows near 17°C, with 371 mm of rain across 29.1 wet days and about 13.1 hours of daylight. It is the 5th-warmest and 4th-wettest month of the year here.

Highs climb over the month, from about 22°C in the first days to 24°C by the end. The sky is clear or mostly clear about 3% of the time in May, and the air most often feels humid.

Daylight stretches from about 12 h 54 min at the start of May to 13 h 24 min by month's end. Set against the rest of the year, May is Hualien's 10th-clearest and 8th-windiest month. For the whole year in context, see Hualien's year-round climate.

Daytime high
23°
5th warmest
Overnight low
17°
8th coldest
Rainfall
371 mm
29.1 wet days
Daylight
13 h 12 min
5:15 AM – 6:25 PM
Cloud cover
84%
10th clearest
Wind
4 km/h
8th windiest
Solar energy
4.44 kWh/m²
Travel score
3.8
out of 10

Hualien is A county-administered city in Hualien County, Taiwan.

Density
3,382/km²
people per km²

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 22°C in the first days to 24°C by the end.

A typical May day in Hualien reaches about 23°C in the afternoon and slips back to 17°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, May runs about 3°C warmer than April and about 3°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12216
22216
32216
42316
52316
62316
72317
82317
92317
102317
112317
122317
132317
142317
152317
162417
172417
182418
192418
202418
212418
222418
232418
242418
252418
262418
272418
282418
292418
302418
312518

Hualien weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan15° / 10°40629.610.72.4
Feb16° / 10°38125.911.22.7
Mar18° / 12°33527.611.83.4
Apr21° / 15°27926.512.53.8
May23° / 17°37129.113.13.8
Jun26° / 19°33725.713.53.9
Jul27° / 20°29421.613.34.6
Aug27° / 20°35322.912.84.6
Sep25° / 19°46922.912.14.6
Oct22° / 17°34423.511.44.5
Nov19° / 14°26924.610.83.9
Dec16° / 11°33128.310.52.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 3% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 8% of May, with mostly cloudy or overcast conditions the remaining 89%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11486
21486
31486
41486
51486
61486
71486
81486
91486
101486
111486
121486
131288
141288
151288
161189
171090
181090
19991
20991
21991
22892
23892
24892
25793
26793
27793
28892
29892
30892
31892

Chance of precipitation in May

Any precipitation

Hualien gets around 371 mm of rain over 29.1 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 93% and peaks near 95% on the wettest days.

0%20%40%60%80%100%151015202531
Rain chance (%)
192
292
392
492
592
692
792
892
992
1092
1192
1293
1393
1493
1594
1694
1795
1895
1995
2095
2195
2295
2395
2495
2595
2694
2794
2894
2993
3093
3192

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the humid band about 54% of days. Sticky, muggy-or-worse air turns up on roughly 37% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1520714
2519715
3518716
4416728
54157110
63147211
73137014
83126916
92116918
102106820
11296623
12186625
13176428
14176131
15166033
16155836
17055639
18055441
19045244
20044947
21044749
22044452
23044254
24043957
25043759
26033463
27033265
28033067
29032869
30032671
31022474

Wind in May

Winds average 4 km/h in May.

Across May, 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.

0246810151015202531
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
314calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 54 min at the start of May to 13 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over May. Sunrise moves from 5:24 AM to 5:10 AM, and sunset from 6:17 PM to 6:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.95:246:17
212.95:246:18
312.95:236:18
412.95:226:19
513.05:226:19
613.05:216:20
713.05:206:20
813.05:206:21
913.05:196:21
1013.15:186:22
1113.15:186:22
1213.15:176:23
1313.15:176:23
1413.15:166:24
1513.15:166:24
1613.25:156:25
1713.25:156:25
1813.25:146:25
1913.25:146:26
2013.25:136:26
2113.25:136:27
2213.25:136:27
2313.35:126:28
2413.35:126:28
2513.35:126:29
2613.35:116:29
2713.35:116:30
2813.35:116:30
2913.35:116:31
3013.35:106:31
3113.45:106:32

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 4.44 kWh/m².

For context, solar energy here swings from a low near 2.11 kWh/m² to a high of 5.81 kWh/m² in July across the year — May's 4.44 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.4Bright
24.4Bright
34.4Bright
44.4Bright
54.5Bright
64.5Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.5Bright
124.5Bright
134.5Bright
144.5Bright
154.5Bright
164.5Bright
174.5Bright
184.5Bright
194.4Bright
204.4Bright
214.4Bright
224.4Bright
234.4Bright
244.4Bright
254.4Bright
264.4Bright
274.4Bright
284.4Bright
294.4Bright
304.4Bright
314.4Bright
Planning a trip in May

Hazard calendar for Hualien

In seasonPeak

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

Hualien 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 May a good time to visit Hualien?

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

3.8
Sightseeing
7th-best month of the year
3.1
Beach & pool
6th-best month of the year

May is a weaker month for outdoor sightseeing in Hualien.

What to pack for Hualien in May

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

In May, Hualien sees daytime highs around 23°C and nights near 17°C. Pack rain gear. Worth having: light clothes. About 29 days see rain.

rain gearlight clothes

Sea temperature near Hualien in May

The nearest coast averages about 27°C in May — 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
Mar25Warm
Apr26Warm
May27Warm
Jun28Tropical
Jul29Tropical
Aug29Tropical
Sep28Tropical
Oct27Warm
Nov26Warm
Dec25Warm

UV index in Hualien in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Hualien 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 Hualien in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Hualien 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 Hualien?

Hualien sits at 24.0°N, 121.6°E, 13 m above sea level, in Taiwan. The nearest listed city is Xiulin, 16 km away.

PuliYilanLuguWufengCaotunZhongxing New VillageTaichung

Topography around Hualien

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

Within 3 km, the terrain around Hualien has only modest variations in elevation — a maximum elevation change of 101 m around an average of 16 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,378 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,837 m.

The land around Hualien is covered by artificial surfaces (44%), trees (27%) and water (22%) within 3 km, water (46%) and trees (45%) within 16 km, and trees (66%) and water (31%) within 80 km.

3 km
101 m
16 km
2,378 m
80 km
3,837 m
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Xiulin 16 km · Puli 65 km · Yilan 88 km · Lugu 90 km · Wufeng 93 km · Caotun 93 km · Zhongxing New Village 93 km · Taichung 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 Hualien (23.9769°, 121.6044°, elevation 13 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).