Naesŏ in Summer
In summer (June, July and August), Naesŏ sees average daytime highs around 29°C and overnight lows near 21°C, with 579 mm of rain over about 38 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 26°C in early June to 29°C by late August. The sky is clear or mostly clear about 21% of the time across summer, and the air most often feels oppressive.
Summer is Naesŏ's 3rd-best season to visit on our travel score. For the whole year in context, see Naesŏ's year-round climate.
- Avg daytime high
- 29°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 579 mm
- 38 wet days
- Avg wind
- 9 km/h
- Travel score
- 5.1
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Naesŏ in Summer
Over the season highs climb from about 26°C in early June to 29°C by late August.
A typical summer day in Naesŏ reaches about 29°C and drops to 21°C overnight. The warmest of the three months is August, the coolest June.
How summer really feels in Naesŏ
Once humidity and wind are folded in, summer brings about 40 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.
Naesŏ 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 | 7° / -3° | 25 | 3.6 | 0.7 | 9.9 | 1.2 |
| Feb | 10° / -1° | 35 | 4.3 | 0.4 | 10.7 | 2.4 |
| Mar | 14° / 3° | 70 | 6.9 | 0.4 | 11.7 | 4.6 |
| Apr | 20° / 8° | 97 | 7.7 | 0 | 12.9 | 6.6 |
| May | 24° / 13° | 105 | 7.8 | 0 | 13.8 | 7.2 |
| Jun | 27° / 18° | 152 | 9.4 | 0 | 14.3 | 6.3 |
| Jul | 29° / 23° | 225 | 14.2 | 0 | 14.1 | 4.7 |
| Aug | 30° / 23° | 202 | 14.3 | 0 | 13.3 | 4.4 |
| Sep | 27° / 18° | 154 | 9.4 | 0 | 12.2 | 6.5 |
| Oct | 22° / 11° | 63 | 4.5 | 0 | 11.1 | 7.7 |
| Nov | 15° / 4° | 43 | 4.8 | 0 | 10.1 | 5.5 |
| Dec | 9° / -1° | 25 | 3.2 | 0.2 | 9.7 | 2.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 21% of the time across summer.
Chance of precipitation in Summer
Naesŏ gets around 579 mm of rain over 38 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 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 12 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 Naesŏ
In summer, Naesŏ overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Naesŏ sits in the Pacific typhoon belt; the season peaks July–October.
Naesŏ's rainy season runs May–September, when most of the year's rain falls.
Is summer a good time to visit Naesŏ?
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 Naesŏ for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Naesŏ in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Naesŏ sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 38 days see rain.
Sea temperature near Naesŏ in Summer
The nearest coast averages about 23°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 53 km away) is warmest in August at about 26°C and coldest in February near 14°C.
It's comfortable for a long swim from Jun 17 to Nov 5 — about 4.7 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 15 | 14 | 14 | 15 | 17 | 20 | 23 | 26 | 25 | 22 | 19 | 17 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Refreshing | Warm | Warm | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 15 | Bracing |
| Feb | 14 | Bracing |
| Mar | 14 | Bracing |
| Apr | 15 | Bracing |
| May | 17 | Cool |
| Jun | 20 | Refreshing |
| Jul | 23 | Refreshing |
| Aug | 26 | Warm |
| Sep | 25 | Warm |
| Oct | 22 | Refreshing |
| Nov | 19 | Cool |
| Dec | 17 | Cool |
UV index in Naesŏ 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 Naesŏ peaks around August 18 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 | 4 | 6 | 7 | 8 | 8 | 8 | 9 | 8 | 5 | 4 | 2 |
| Level | Moderate | Moderate | High | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Moderate |
| Feb | 4 | Moderate |
| Mar | 6 | High |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 9 | Very high |
| Sep | 8 | Very high |
| Oct | 5 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Naesŏ 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 Naesŏ is worst in March — around 51 µg/m³ PM2.5 (poor), about 1.8× the cleanest month (August, 29 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) | 38 | 43 | 51 | 49 | 43 | 38 | 29 | 29 | 33 | 36 | 40 | 35 |
| Level | Poor | Poor | Poor | Poor | Poor | Poor | Moderate | Moderate | Moderate | Poor | Poor | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 38 | Poor |
| Feb | 43 | Poor |
| Mar | 51 | Poor |
| Apr | 49 | Poor |
| May | 43 | Poor |
| Jun | 38 | Poor |
| Jul | 29 | Moderate |
| Aug | 29 | Moderate |
| Sep | 33 | Moderate |
| Oct | 36 | Poor |
| Nov | 40 | Poor |
| Dec | 35 | Moderate |
Where is Naesŏ?
Naesŏ sits at 35.2°N, 128.5°E, 62 m above sea level, in South Korea. The nearest listed city is Changwon, 15 km away.
Topography around Naesŏ
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Naesŏ.
Within 3 km, the terrain around Naesŏ has significant variations in elevation — a maximum elevation change of 526 m around an average of 151 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 752 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,871 m.
The land around Naesŏ is covered by trees (75%) within 3 km, trees (66%) within 16 km, and trees (54%) 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 Naesŏ (35.2497°, 128.52°, elevation 62 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.