South Korea / Gangwon-do
Jumunjin Beach
Jumunjin Beach is a sandy beach facing north-east, 2.0 km north of Jumunjin (Gangwon-do, South Korea). The sea averages 24.2 °C in August, its warmest month, and 9.0 °C in February; it is 21 °C or warmer in July–September.
Average sea surface temperature by month. Current month outlined.
Month by month
October at Jumunjin Beach
Beach-day index 4.5/10 · South Korea median 4.7
| Measure | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea °C | 10.4 °C | 9.0 °C | 9.4 °C | 11.7 °C | 14.3 °C | 18.2 °C | 21.9 °C | 24.2 °C | 22.1 °C | 19.2 °C | 15.8 °C | 12.8 °C |
| High °C | 5° | 6° | 9° | 13° | 17° | 20° | 24° | 26° | 22° | 19° | 13° | 8° |
| Low °C | 3° | 3° | 6° | 10° | 14° | 19° | 22° | 24° | 21° | 17° | 11° | 5° |
| Rain mm | 33 | 46 | 51 | 85 | 79 | 106 | 303 | 253 | 187 | 93 | 66 | 37 |
| Cloud % | 58 | 60 | 60 | 60 | 64 | 70 | 75 | 70 | 67 | 55 | 54 | 55 |
| Wind m/s | 7.5 | 6.8 | 6.1 | 5.5 | 4.6 | 3.9 | 4.1 | 4.2 | 4.6 | 5.4 | 6.7 | 7.8 |
| Daylight h | 9.8 | 10.8 | 11.9 | 13.1 | 14.2 | 14.8 | 14.6 | 13.7 | 12.5 | 11.3 | 10.2 | 9.6 |
| Record high/low | 13°/-9° | 16°/-7° | 17°/-2° | 21°/4° | 24°/8° | 26°/14° | 30°/18° | 31°/18° | 27°/16° | 23°/6° | 20°/1° | 16°/-6° |
| Beach index | 2.6 | 2.6 | 2.6 | 2.5 | 2.6 | 4.9 | 6.3 | 7.3 | 6.3 | 4.5 | 2.7 | 2.5 |
Long-term monthly averages: air from NASA POWER (2001–2020), sea from NOAA OISST (1991–2020); records are the extremes of 2001–2020. How the index works.
When to go
The beach-day index peaks in August; August scores 7.3/10 with highs of 26 °C, sea at 24.2 °C and 253 mm of rain.
That matches the median for beaches in South Korea in the same month.
Across the year the sea averages 15.8 °C, cooler than 69% of the coastal beaches in the atlas.
July is the wettest month (303 mm) and January the driest (33 mm); the yearly total is about 1,340 mm.
Daylight runs from 9.6 hours in December to 14.8 hours in June; in mid-August the sun rises at 05:39 and sets at 19:19 local time.
Orientation, sun and shore
The shore faces north-east (40°). Open water fills about 42% of the horizon close by, which makes it an open stretch of shore.
At no time of year does the sun set over the sea here: sunset bearings run from 241° to 301°, behind the land.
Sunrise is over the sea in February–November.
Straight out to the north-east there is open water for more than 2,000 km, so the beach is exposed to long ocean swell.
About 1 km offshore the sea is roughly 26 m deep and 74 m at 3 km. Behind the beach the ground is about 9 m above sea level 500 m inland and 15 m at 1.5 km, a flat coastal plain.
Within 1 km, the land is 34% built-up land, 30% tree cover and 21% cropland (satellite land-cover map, 2021): a partly built-up setting. Water makes up 50% of that circle.
- Built 34%
- Tree 30%
- Crop 21%
- Grass 8%
- Bare 7%
Land cover: ESA WorldCover 2021 (10 m). Orientation from OpenStreetMap land polygons sampled in 36 directions; depths and heights from the GEBCO 2020 grid (about 450 m cells), indicative only.
Rainfall reaches 303 mm in July and stays above 250 mm in July and August.
Average wind speed at 10 m reaches 7.8 m/s in December, the windiest month.
OpenStreetMap shows no lifeguard station within 1 km. Seasonal lifeguard posts are often unmapped, so check on site.
Photos
From above
Facilities within 1 km
- 5Restaurants, cafés & bars
- 2Public toilets
- –Showers
- 2Car parks
- –Lifeguard stations
- 4Hotels & guesthouses
- 1Campsites
- 18Bus stops (1.5 km)
Food and drink mapped within 1 km: 3 restaurants and 2 cafés. Accommodation: 4 hotels and guesthouses.
Counted within 1 km of the beach (bus stops 1.5 km) from OpenStreetMap features and Overture Maps places, release of 2026-10. Unmapped does not mean absent.
Around the beach
Campsites
- 주문진해수욕장 캠핑장 60 m NE
Getting there
| Airport | Code | Distance | Direction |
|---|---|---|---|
| Yangyang International Airport Gonghang-ro | YNY | 21.4 km | north-west |
| Wonju Airport / Hoengseong Air Base (K-38/K-46) Wonju | WJU | 92.2 km | south-west |
| Cheongju International Airport/Cheongju Air Base (K-59/G-513) Cheongju | CJJ | 177 km | south-west |
Straight-line distances from the beach; road distance is usually 20–40% longer.
Local transport: 18 bus stops within 1.5 km and 2 mapped car parks within 1 km.
1 town or village of 1,000+ people lie within 10 km (about 20.6K residents); within 30 km there are 4 (about 228.8K).
Reference
Jumunjin Beach has an article on the KO Wikipedia: 주문진해수욕장.
Wikidata item Q27303383.
When people look it up
The KO Wikipedia article was read 284 times in the 12 months to August 2026. Interest peaks in August (59 views), 8.4× the quietest month.
Map
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Data on this page
- Air temperature, rain, cloud, wind, humidity: NASA POWER climatology 2001–2020, 0.5° grid.
- Sea temperature: NOAA OISST v2.1 monthly normals 1991–2020, nearest ocean cell 6.1 km away.
- Beach outline, surface, rules and public facilities: OpenStreetMap contributors (ODbL), feature n368950865; restaurants, cafés, bars and lodging: Overture Maps places (CDLA-Permissive-2.0).
- Water body, status and length: Wikidata (CC0).
- Towns and time zone: GeoNames (CC BY 4.0). Airports: OurAirports (public domain). Sunrise and sunset: NOAA solar equations.
- Photos: Wikimedia Commons, author and licence under each image.
- Satellite view: Copernicus Sentinel-2 (ESA), scene S2C_52SDH_20250322_0_L2A.
- Orientation: OpenStreetMap land polygons (ODbL). Depth and terrain: GEBCO 2020 grid.
- Settlements: GeoNames places with 1,000+ inhabitants.
- Land cover: ESA WorldCover 2021, 10 m (CC BY 4.0).
- Search popularity: about 49.5K Google searches a month for the name (KeywordTool, October 2026).
Data compiled 2026-10-13. Something wrong? Report a data error.