Hualien in Summer
In summer (June, July and August), Hualien sees average daytime highs around 27°C and overnight lows near 20°C, with 984 mm of rain over about 70 wet days across the season. It is the warmest season of the year and the driest season of the year.
Across summer, daytime highs hold fairly steady around 27°C. The sky is clear or mostly clear about 13% of the time across summer, and the air most often feels muggy.
Summer is Hualien's best season of the year to visit on our travel score. For the whole year in context, see Hualien's year-round climate.
- Avg daytime high
- 27°C
- warmest season of the year
- Avg overnight low
- 20°C
- Rainfall
- 984 mm
- 70 wet days
- Avg wind
- 4 km/h
- Travel score
- 4.4
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Hualien in Summer
Across summer, daytime highs hold fairly steady around 27°C.
A typical summer day in Hualien reaches about 27°C and drops to 20°C overnight. The warmest of the three months is July, the coolest June.
Hualien weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 15° / 10° | 406 | 29.6 | 10.7 | 2.4 |
| Feb | 16° / 10° | 381 | 25.9 | 11.2 | 2.7 |
| Mar | 18° / 12° | 335 | 27.6 | 11.8 | 3.4 |
| Apr | 21° / 15° | 279 | 26.5 | 12.5 | 3.8 |
| May | 23° / 17° | 371 | 29.1 | 13.1 | 3.8 |
| Jun | 26° / 19° | 337 | 25.7 | 13.5 | 3.9 |
| Jul | 27° / 20° | 294 | 21.6 | 13.3 | 4.6 |
| Aug | 27° / 20° | 353 | 22.9 | 12.8 | 4.6 |
| Sep | 25° / 19° | 469 | 22.9 | 12.1 | 4.6 |
| Oct | 22° / 17° | 344 | 23.5 | 11.4 | 4.5 |
| Nov | 19° / 14° | 269 | 24.6 | 10.8 | 3.9 |
| Dec | 16° / 11° | 331 | 28.3 | 10.5 | 2.9 |
Cloud cover in Summer
The sky is clear or mostly clear about 13% of the time across summer.
Chance of precipitation in Summer
Hualien gets around 984 mm of rain over 70 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 24 min in early June to 12 h 30 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 5.4 kWh/m².
Hazard calendar for Hualien
In summer, Hualien overlaps 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.
Is summer a good time to visit Hualien?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Hualien for sightseeing.
What to pack for Hualien in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Hualien sees daytime highs around 27°C and nights near 20°C. Pack light clothes and rain gear. Worth having: sun protection. About 70 days see rain.
Sea temperature near Hualien in Summer
The nearest coast averages about 29°C across summer — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 24 | 24 | 25 | 26 | 27 | 28 | 29 | 29 | 28 | 27 | 26 | 25 |
| Comfort | Refreshing | Refreshing | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 24 | Refreshing |
| Feb | 24 | Refreshing |
| Mar | 25 | Warm |
| Apr | 26 | Warm |
| May | 27 | Warm |
| Jun | 28 | Tropical |
| Jul | 29 | Tropical |
| Aug | 29 | Tropical |
| Sep | 28 | Tropical |
| Oct | 27 | Warm |
| Nov | 26 | Warm |
| Dec | 25 | Warm |
UV index in Hualien in Summer
Clear-sky midday UV across summer averages around 12 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 8 | 10 | 8 | 10 | 13 | 12 | 11 | 11 | 9 | 7 | 6 |
| Level | High | Very high | Very high | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 10 | Very high |
| Apr | 8 | Very high |
| May | 10 | Very high |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 9 | Very high |
| Nov | 7 | Very high |
| Dec | 6 | High |
Air quality in Hualien in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 15 | 17 | 22 | 22 | 17 | 15 | 11 | 12 | 11 | 11 | 11 | 13 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good | Good | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 15 | Moderate |
| Feb | 17 | Moderate |
| Mar | 22 | Moderate |
| Apr | 22 | Moderate |
| May | 17 | Moderate |
| Jun | 15 | Moderate |
| Jul | 11 | Good |
| Aug | 12 | Good |
| Sep | 11 | Good |
| Oct | 11 | Good |
| Nov | 11 | Good |
| Dec | 13 | Moderate |
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.
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.
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
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.