Masan in Summer
In summer (June, July and August), Masan sees average daytime highs around 29°C and overnight lows near 21°C, with 629 mm of rain over about 42 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 Masan's 3rd-best season to visit on our travel score. For the whole year in context, see Masan's year-round climate.
- Avg daytime high
- 29°C
- warmest season of the year
- Avg overnight low
- 21°C
- Rainfall
- 629 mm
- 42 wet days
- Avg wind
- 9 km/h
- Travel score
- 5.1
- 3rd-best season
- Months
- Jun · Jul · Aug
Temperature in Masan 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 Masan 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 Masan
Once humidity and wind are folded in, summer brings about 38 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.
Masan 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° / -3° | 27 | 5.3 | 3.1 | 9.9 | 0.0 |
| Feb | 7° / -2° | 34 | 5.3 | 1.4 | 10.7 | 1.0 |
| Mar | 12° / 2° | 60 | 7.3 | 0.8 | 11.7 | 3.6 |
| Apr | 18° / 7° | 86 | 7.6 | 0 | 12.9 | 6.3 |
| May | 23° / 12° | 97 | 8 | 0 | 13.8 | 7.2 |
| Jun | 27° / 18° | 162 | 10.1 | 0 | 14.3 | 6.3 |
| Jul | 29° / 22° | 243 | 16.2 | 0 | 14.1 | 4.6 |
| Aug | 30° / 23° | 224 | 15.7 | 0 | 13.3 | 4.3 |
| Sep | 26° / 17° | 145 | 9.8 | 0 | 12.2 | 6.6 |
| Oct | 21° / 11° | 55 | 4.5 | 0 | 11.1 | 7.5 |
| Nov | 14° / 4° | 46 | 6.3 | 0.2 | 10.2 | 4.6 |
| Dec | 7° / -1° | 29 | 5.4 | 2.2 | 9.7 | 1.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 21% of the time across summer.
Chance of precipitation in Summer
Masan gets around 629 mm of rain over 42 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 5.1 kWh/m².
Hazard calendar for Masan
In summer, Masan overlaps its pacific typhoon and rainy season season. The full year is below, with each hazard's peak months called out.
Masan sits in the Pacific typhoon belt; the season peaks July–October.
Masan's rainy season runs June–September, when most of the year's rain falls.
Is summer a good time to visit Masan?
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 Masan for sightseeing.
What to pack for Masan in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Masan sees daytime highs around 29°C and nights near 21°C. Pack light clothes and rain gear. Worth having: sun protection. About 42 days see rain.
Sea temperature near Masan 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 50 km away) is warmest in August at about 25°C and coldest in February near 6°C.
It's comfortable for a long swim from Jun 26 to Oct 11 — about 3.6 months when the water holds above 20°C.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 8 | 6 | 7 | 10 | 14 | 19 | 23 | 25 | 23 | 19 | 15 | 11 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Refreshing | Cool | Cool | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 8 | Bracing |
| Feb | 6 | Bracing |
| Mar | 7 | Bracing |
| Apr | 10 | Bracing |
| May | 14 | Bracing |
| Jun | 19 | Cool |
| Jul | 23 | Refreshing |
| Aug | 25 | Warm |
| Sep | 23 | Refreshing |
| Oct | 19 | Cool |
| Nov | 15 | Cool |
| Dec | 11 | Bracing |
UV index in Masan in Summer
Clear-sky midday UV across summer averages around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Masan peaks around July 12 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. 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 | 6 | 7 | 8 | 8 | 8 | 7 | 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 | 3 | Moderate |
| Mar | 6 | High |
| Apr | 7 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 7 | Very high |
| Sep | 8 | Very high |
| Oct | 5 | High |
| Nov | 4 | Moderate |
| Dec | 2 | Moderate |
Air quality in Masan 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 Masan is worst in March — around 61 µg/m³ PM2.5 (unhealthy), about 2.1× the cleanest month (August, 28 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) | 41 | 48 | 61 | 54 | 45 | 39 | 29 | 28 | 33 | 35 | 38 | 34 |
| Level | Poor | Poor | Unhealthy | Poor | Poor | Poor | Moderate | Moderate | Moderate | Moderate | Poor | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 41 | Poor |
| Feb | 48 | Poor |
| Mar | 61 | Unhealthy |
| Apr | 54 | Poor |
| May | 45 | Poor |
| Jun | 39 | Poor |
| Jul | 29 | Moderate |
| Aug | 28 | Moderate |
| Sep | 33 | Moderate |
| Oct | 35 | Moderate |
| Nov | 38 | Poor |
| Dec | 34 | Moderate |
Where is Masan?
Masan sits at 35.1°N, 126.8°E, 18 m above sea level, in South Korea. The nearest listed city is Gwangju, 8.0 km away.
Topography around Masan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Masan.
Within 3 km, the terrain around Masan has only modest variations in elevation — a maximum elevation change of 190 m around an average of 30 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,162 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,717 m.
The land around Masan is covered by artificial surfaces (35%), cropland (31%) and trees (23%) within 3 km, trees (47%), cropland (25%) and artificial surfaces (22%) within 16 km, and trees (48%), water (25%) and cropland (22%) 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 Masan (35.1272°, 126.8315°, elevation 18 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.