Keelung in Summer
In summer (June, July and August), Keelung sees average daytime highs around 28°C and overnight lows near 27°C, with 415 mm of rain over about 35 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 28°C. The sky is clear or mostly clear about 28% of the time across summer, and the air most often feels miserable.
Summer is Keelung's 3rd-best season to visit on our travel score. For the whole year in context, see Keelung's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 27°C
- Rainfall
- 415 mm
- 35 wet days
- Avg wind
- 14 km/h
- Travel score
- 5.4
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Keelung in Summer
Across summer, daytime highs hold fairly steady around 28°C.
A typical summer day in Keelung reaches about 28°C and drops to 27°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Keelung
Once humidity and wind are folded in, summer brings about 75 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Keelung 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 | 18° / 15° | 178 | 19.4 | 10.6 | 4.3 |
| Feb | 18° / 15° | 172 | 17.1 | 11.1 | 4.5 |
| Mar | 20° / 17° | 160 | 17.6 | 11.8 | 5.1 |
| Apr | 23° / 20° | 133 | 14.5 | 12.6 | 5.9 |
| May | 25° / 23° | 163 | 14.2 | 13.2 | 6.0 |
| Jun | 28° / 26° | 141 | 13.2 | 13.5 | 5.4 |
| Jul | 29° / 27° | 103 | 9.2 | 13.4 | 5.5 |
| Aug | 29° / 27° | 171 | 12.8 | 12.9 | 5.3 |
| Sep | 27° / 26° | 192 | 15.2 | 12.2 | 5.7 |
| Oct | 25° / 23° | 205 | 15.5 | 11.4 | 6.0 |
| Nov | 22° / 20° | 195 | 17.6 | 10.8 | 5.4 |
| Dec | 19° / 17° | 186 | 18.9 | 10.5 | 4.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 28% of the time across summer.
Chance of precipitation in Summer
Keelung gets around 415 mm of rain over 35 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 14 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 5.7 kWh/m².
Hazard calendar for Keelung
In summer, Keelung overlaps its pacific typhoon season. The full year is below, with each hazard's peak months called out.
Keelung sits in the Pacific typhoon belt; the season peaks July–October.
Is summer a good time to visit Keelung?
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 Keelung for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Keelung in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Keelung sees daytime highs around 28°C and nights near 27°C. Pack light clothes and sun protection. Worth having: rain gear. About 35 days see rain.
Sea temperature near Keelung in Summer
The nearest coast averages about 28°C across summer — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 14 km away) is warmest in August at about 28°C and coldest in January near 21°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) | 21 | 21 | 22 | 24 | 25 | 27 | 28 | 28 | 27 | 26 | 24 | 23 |
| Comfort | Refreshing | Refreshing | Refreshing | Refreshing | Warm | Warm | Tropical | Tropical | Warm | Warm | Warm | Refreshing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 21 | Refreshing |
| Feb | 21 | Refreshing |
| Mar | 22 | Refreshing |
| Apr | 24 | Refreshing |
| May | 25 | Warm |
| Jun | 27 | Warm |
| Jul | 28 | Tropical |
| Aug | 28 | Tropical |
| Sep | 27 | Warm |
| Oct | 26 | Warm |
| Nov | 24 | Warm |
| Dec | 23 | Refreshing |
UV index in Keelung in Summer
Clear-sky midday UV across summer averages 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 Keelung peaks around June 18 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 4 (moderate).
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) | 5 | 7 | 9 | 8 | 10 | 12 | 11 | 9 | 11 | 8 | 7 | 4 |
| Level | Moderate | Very high | Very high | Very high | Extreme | Extreme | Extreme | Very high | Extreme | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 5 | Moderate |
| Feb | 7 | Very high |
| Mar | 9 | Very high |
| Apr | 8 | Very high |
| May | 10 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 9 | Very high |
| Sep | 11 | Extreme |
| Oct | 8 | Very high |
| Nov | 7 | High |
| Dec | 4 | Moderate |
Air quality in Keelung 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 Keelung is worst in April — around 47 µg/m³ PM2.5 (poor), about 2.3× the cleanest month (October, 20 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) | 29 | 36 | 44 | 47 | 42 | 42 | 34 | 28 | 24 | 20 | 25 | 25 |
| Level | Moderate | Poor | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 29 | Moderate |
| Feb | 36 | Poor |
| Mar | 44 | Poor |
| Apr | 47 | Poor |
| May | 42 | Poor |
| Jun | 42 | Poor |
| Jul | 34 | Moderate |
| Aug | 28 | Moderate |
| Sep | 24 | Moderate |
| Oct | 20 | Moderate |
| Nov | 25 | Moderate |
| Dec | 25 | Moderate |
Where is Keelung?
Keelung sits at 25.1°N, 121.7°E, 19 m above sea level, in Taiwan. The nearest listed city is Jiufen, 11 km away.
Topography around Keelung
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Keelung.
Within 3 km, the terrain around Keelung has only modest variations in elevation — a maximum elevation change of 197 m around an average of 58 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 907 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,613 m.
The land around Keelung is covered by trees (58%) and artificial surfaces (32%) within 3 km, trees (59%) and water (35%) within 16 km, and water (62%) and trees (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 Keelung (25.1309°, 121.7409°, elevation 19 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.