Yeonil in Summer
In summer (June, July and August), Yeonil sees average daytime highs around 28°C and overnight lows near 21°C, with 517 mm of rain over about 35 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 25°C in early June to 27°C by late August. The sky is clear or mostly clear about 19% of the time across summer, and the air most often feels oppressive.
Summer is Yeonil's 2nd-best season to visit on our travel score. For the whole year in context, see Yeonil's year-round climate.
- Avg daytime high
- 28°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 517 mm
- 35 wet days
- Avg wind
- 10 km/h
- Travel score
- 5.6
- 2nd-best season
- Months
- Jun · Jul · Aug
Temperature in Yeonil in Summer
Over the season highs climb from about 25°C in early June to 27°C by late August.
A typical summer day in Yeonil reaches about 28°C and drops to 21°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Yeonil
Once humidity and wind are folded in, summer brings about 25 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.
Yeonil 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 | 5° / -2° | 27 | 4.4 | 1.2 | 9.8 | 0.2 |
| Feb | 7° / -1° | 33 | 4.5 | 1.2 | 10.6 | 1.2 |
| Mar | 12° / 3° | 61 | 7 | 0.9 | 11.7 | 3.4 |
| Apr | 18° / 8° | 74 | 7.2 | 0 | 12.9 | 6.0 |
| May | 22° / 13° | 84 | 7.6 | 0 | 13.9 | 7.1 |
| Jun | 25° / 18° | 120 | 8.5 | 0 | 14.4 | 6.7 |
| Jul | 28° / 23° | 195 | 13 | 0 | 14.2 | 5.2 |
| Aug | 29° / 23° | 202 | 13.5 | 0 | 13.4 | 5.0 |
| Sep | 25° / 19° | 154 | 9.8 | 0 | 12.2 | 6.7 |
| Oct | 20° / 12° | 62 | 5 | 0 | 11.1 | 7.2 |
| Nov | 14° / 6° | 39 | 5 | 0 | 10.1 | 4.8 |
| Dec | 8° / -0° | 24 | 3.7 | 0.5 | 9.6 | 1.5 |
Cloud cover in Summer
The sky is clear or mostly clear about 19% of the time across summer.
Chance of precipitation in Summer
Yeonil gets around 517 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 oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 10 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 18 min in early June to 12 h 48 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 4.9 kWh/m².
Hazard calendar for Yeonil
In summer, Yeonil overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Yeonil sits in the Pacific typhoon belt; the season peaks July–October.
Yeonil's rainy season runs June–September, when most of the year's rain falls.
Is summer a good time to visit Yeonil?
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 Yeonil for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Yeonil in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Yeonil sees daytime highs around 28°C and nights near 21°C. Pack light clothes. Worth having: rain gear and sun protection. About 35 days see rain.
Sea temperature near Yeonil in Summer
The nearest coast averages about 22°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 31 km away) is warmest in August at about 25°C and coldest in February near 12°C.
It's comfortable for a long swim from Jun 25 to Oct 28 — about 4.1 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 12 | 13 | 14 | 16 | 19 | 22 | 25 | 24 | 21 | 18 | 16 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Refreshing | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 12 | Bracing |
| Mar | 13 | Bracing |
| Apr | 14 | Bracing |
| May | 16 | Cool |
| Jun | 19 | Cool |
| Jul | 22 | Refreshing |
| Aug | 25 | Warm |
| Sep | 24 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 18 | Cool |
| Dec | 16 | Cool |
UV index in Yeonil in Summer
Clear-sky midday UV across summer averages 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 Yeonil peaks around August 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 at about 2 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 7 | 8 | 6 | 8 | 10 | 8 | 5 | 3 | 2 |
| Level | Moderate | Moderate | Moderate | High | Very high | High | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 10 | Very high |
| Sep | 8 | Very high |
| Oct | 5 | High |
| Nov | 3 | Moderate |
| Dec | 2 | Moderate |
Air quality in Yeonil 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 Yeonil is worst in March — around 66 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (August, 34 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) | 51 | 57 | 66 | 60 | 55 | 47 | 37 | 34 | 39 | 47 | 56 | 47 |
| Level | Poor | Unhealthy | Unhealthy | Unhealthy | Poor | Poor | Poor | Moderate | Poor | Poor | Unhealthy | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 51 | Poor |
| Feb | 57 | Unhealthy |
| Mar | 66 | Unhealthy |
| Apr | 60 | Unhealthy |
| May | 55 | Poor |
| Jun | 47 | Poor |
| Jul | 37 | Poor |
| Aug | 34 | Moderate |
| Sep | 39 | Poor |
| Oct | 47 | Poor |
| Nov | 56 | Unhealthy |
| Dec | 47 | Poor |
Where is Yeonil?
Yeonil sits at 36.0°N, 129.3°E, 4 m above sea level, in South Korea. The nearest listed city is Pohang, 5.0 km away.
Topography around Yeonil
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Yeonil.
Within 3 km, the terrain around Yeonil has significant variations in elevation — a maximum elevation change of 253 m around an average of 47 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 644 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,200 m.
The land around Yeonil is covered by trees (49%) and artificial surfaces (27%) within 3 km, trees (56%) within 16 km, and trees (56%) and water (30%) within 80 km.
South Korea travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type C / F
- 220 V · 60 Hz
- Prices
- ≈ 57% of US
- price level, 2025
- GDP per capita
- $36,227
- 2025
- Happiness
- 6.0 / 10
- World Happiness, 2025
- Safe drinking water
- 99%
- of population, 2024
- Homicide rate
- 0.5
- per 100k, 2023
- Road deaths
- 8.6
- per 100k/yr, 2019
- Income group
- High
- World Bank
- English
- Moderate
- EF EPI 522
- 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 Yeonil (36.0045°, 129.3185°, elevation 4 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.