Dalian in Summer
In summer (June, July and August), Dalian sees average daytime highs around 24°C and overnight lows near 22°C, with 356 mm of rain over about 25 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Over the season highs climb from about 19°C in early June to 25°C by late August. The sky is clear or mostly clear about 41% of the time across summer, and the air most often feels oppressive.
Summer is Dalian's best season of the year to visit on our travel score. For the whole year in context, see Dalian's year-round climate.
- Avg daytime high
- 24°C
- warmest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 356 mm
- 25 wet days
- Avg wind
- 15 km/h
- Travel score
- 7.0
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Dalian in Summer
Over the season highs climb from about 19°C in early June to 25°C by late August.
A typical summer day in Dalian reaches about 24°C and drops to 22°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Dalian
Once humidity and wind are folded in, summer brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Dalian 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 | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 0° / -3° | 7 | 1.9 | 2 | 9.6 | 0.0 |
| Feb | 1° / -2° | 10 | 2 | 1 | 10.5 | 0.0 |
| Mar | 5° / 2° | 15 | 3.1 | 0.7 | 11.7 | 0.2 |
| Apr | 10° / 7° | 36 | 5.4 | 0.1 | 13 | 2.5 |
| May | 15° / 13° | 59 | 6 | 0 | 14.1 | 5.3 |
| Jun | 21° / 19° | 80 | 6.8 | 0 | 14.7 | 7.0 |
| Jul | 25° / 23° | 136 | 9.5 | 0 | 14.4 | 7.0 |
| Aug | 26° / 24° | 140 | 8.7 | 0 | 13.5 | 7.1 |
| Sep | 23° / 20° | 51 | 5.3 | 0 | 12.3 | 7.8 |
| Oct | 17° / 14° | 33 | 5.6 | 0 | 11 | 6.2 |
| Nov | 10° / 6° | 28 | 4.7 | 0.8 | 9.9 | 2.5 |
| Dec | 3° / -0° | 12 | 3.2 | 2.1 | 9.3 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 41% of the time across summer.
Chance of precipitation in Summer
Dalian gets around 356 mm of rain over 25 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 15 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 30 min in early June to 12 h 54 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 Dalian
In summer, Dalian overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Dalian sits in the Pacific typhoon belt; the season peaks July–October.
Dalian's rainy season runs June–August, when most of the year's rain falls.
Is summer a good time to visit Dalian?
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 one of the better times to visit Dalian for general sightseeing.
What to pack for Dalian in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Dalian sees daytime highs around 24°C and nights near 22°C. Pack sun protection. Worth having: light clothes and rain gear. About 25 days see rain.
Sea temperature near Dalian in Summer
The nearest coast averages about 21°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 24°C and coldest in February near 3°C.
It's comfortable for a long swim from Jul 5 to Oct 4 — about 3 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 5 | 3 | 4 | 7 | 12 | 17 | 22 | 24 | 23 | 19 | 14 | 9 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Refreshing | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 5 | Bracing |
| Feb | 3 | Bracing |
| Mar | 4 | Bracing |
| Apr | 7 | Bracing |
| May | 12 | Bracing |
| Jun | 17 | Cool |
| Jul | 22 | Refreshing |
| Aug | 24 | Warm |
| Sep | 23 | Refreshing |
| Oct | 19 | Cool |
| Nov | 14 | Bracing |
| Dec | 9 | Bracing |
UV index in Dalian in Summer
Clear-sky midday UV across summer averages around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Dalian peaks around August 18 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 2 | 4 | 5 | 6 | 6 | 7 | 7 | 7 | 4 | 2 | 2 |
| Level | Low | Moderate | Moderate | High | High | High | High | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | High |
| May | 6 | High |
| Jun | 6 | High |
| Jul | 7 | High |
| Aug | 7 | Very high |
| Sep | 7 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Dalian 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 Dalian is worst in March — around 52 µg/m³ PM2.5 (poor), about 2.1× the cleanest month (September, 24 µg/m³).
Seasonal pattern from CAMS reanalysis, scaled to Dalian's WHO annual average of 35.1 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 36 | 41 | 52 | 49 | 41 | 33 | 30 | 25 | 24 | 29 | 32 | 30 |
| Level | Poor | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 36 | Poor |
| Feb | 41 | Poor |
| Mar | 52 | Poor |
| Apr | 49 | Poor |
| May | 41 | Poor |
| Jun | 33 | Moderate |
| Jul | 30 | Moderate |
| Aug | 25 | Moderate |
| Sep | 24 | Moderate |
| Oct | 29 | Moderate |
| Nov | 32 | Moderate |
| Dec | 30 | Moderate |
Where is Dalian?
Dalian sits at 38.9°N, 121.6°E, 33 m above sea level, in China. The nearest listed city is Sinŭiju, 274 km away.
Topography around Dalian
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Dalian.
Within 3 km, the terrain around Dalian has only modest variations in elevation — a maximum elevation change of 218 m around an average of 35 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 442 m; within 80 km, large variations in elevation — a maximum elevation change of 677 m.
The land around Dalian is covered by artificial surfaces (77%) within 3 km, water (45%), artificial surfaces (27%) and trees (22%) within 16 km, and water (71%) within 80 km.
China travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type A / I
- 220 V · 50 Hz
- Prices
- ≈ 47% of US
- price level, 2025
- GDP per capita
- $13,862
- 2025
- Happiness
- 6.1 / 10
- World Happiness, 2025
- Homicide rate
- 0.5
- per 100k, 2020
- Road deaths
- 17.4
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Low
- EF EPI 464
- 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 Dalian (38.9122°, 121.6022°, elevation 33 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.