Beach forecast for Jeju City
Today, Thursday, October 29, 2026 · local time (GMT+9) · Jeju, South Korea Today, Thu, Oct 29 · GMT+9- Swimming
- Calm · 1.1 ft
- Water
- 74 °F · nice
- Max UV
- 3 · SPF 30
- Low tide
- 6:07 am and 7:10 pm
Today, Thursday, October 29, it's not a beach day in Jeju City (2/10). The best day this week is Friday, October 30, at 6/10.
Beach forecast for the next 7 days
| Day | Rating | Best hours | Swimming | Water | UV |
|---|---|---|---|---|---|
| Today | 2Not a beach day | Not today | Calm · 1.1 ft | 74 °F | 3 |
| Fri 30 | 6Fair beach day | 11:00 am–3:00 pm | Calm · 2.7 ft | 73 °F | 5 |
| Sat 31 | 5Fair beach day | 9:00 am–2:00 pm | Calm · 2.4 ft | 70 °F | 5 |
| Sun 1 | 5Fair beach day | 2:00–5:00 pm | Calm · 1.0 ft | 72 °F | 1 |
| Mon 2 | 3Poor beach day | No good window | Use care · 3.4 ft | 72 °F | 5 |
| Tue 3 | 2Not a beach day | No good window | Calm · 2.3 ft | 73 °F | — |
| Wed 4 | 2Not a beach day | No good window | Calm · 2.4 ft | 74 °F | — |
Each rating comes from sun, temperature, rain, wind, waves, UV, water temperature and, where there is one, the tide.
Today in detail
- Onshore breeze (9 mph)
- Calm for swimming: 1.1 ft waves
- UV 3 (moderate): SPF 30 sunscreen
- Water at 74 °F (nice)
- Cloudy (98% cloud cover)
- Feels like 64 °F: chilly for the beach
Today, hour by hour
- Swimming Calm · 1.1 ft
1.1 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 74 °F
Nice for swimming.
- Sun & sunscreen UV 3 · SPF 30
Max UV 3 (moderate): SPF 30 sunscreen, reapplied every 2 hours.
- Wind 9 mph
Onshore breeze (9 mph).
- Tide & sand 7:10 pm
Low tide at 6:07 am and 7:10 pm: that's when there's the most sand. High tide at 12:57 pm.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority.
Today, hour by hour
| Time | Rating | Sky | Feels like | Wind | Waves | UV |
|---|---|---|---|---|---|---|
| 8:00 am | 1 | Overcast | 58 °F | 7 mph | 1.1 ft | 0 |
| 9:00 am | 0 | Overcast | 59 °F | 9 mph | 1.0 ft | 1 |
| 10:00 am | 0 | Light drizzle | 59 °F | 9 mph | 1.0 ft | 1 |
| 11:00 am | 0 | Light drizzle | 60 °F | 6 mph | 1.1 ft | 3 |
| 12:00 pm | 1 | Light drizzle | 61 °F | 4 mph | 1.1 ft | 3 |
| 1:00 pm | 1 | Overcast | 62 °F | 4 mph | 1.0 ft | 2 |
| 2:00 pm | 1 | Overcast | 63 °F | 4 mph | 0.9 ft | 1 |
| 3:00 pm | 2 | Overcast | 63 °F | 3 mph | 0.9 ft | 1 |
| 4:00 pm | 2 | Overcast | 64 °F | 2 mph | 0.8 ft | 0 |
Beach hours only: from one hour after sunrise to half an hour before sunset.
Beaches near Jeju City
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Samyang black sand beach 3.9 mi · E
- Restrooms
- Parking
- 이호테우해변 4.1 mi · W
- Restrooms
- Parking
- 내도몽돌해변 4.8 mi · W
- Restrooms
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
Webcams near Jeju City
Webcams provided by windy.com — add a webcam
How we rate a beach day
We rate every beach hour from 0 to 10 with simple, fixed rules:
- Adds: sunshine (up to 3 points, fewer with more clouds), warmth (up to 4, from the feels-like temperature; ideal between 81 °F and 91 °F), a calm sea (1), water at 70 °F or warmer (1; from 64 °F, half) and low or mid tide (1: more sand). Anything without data is left out and the rest is scaled to 10.
- Takes away: cold (feels-like below 64 °F, 1 to 4 points), rain (half a point if likely, up to 6 if it rains; thunderstorms, 8), wind from force 4, about 12 mph (1 to 6 points; half a point more if offshore, which blows inflatables out to sea, or onshore, which churns the water), waves (1 to swim with care, 4 if dangerous, 1 more for high rip current risk), very high UV (half a point; extreme, 1), water below 59 °F (1) and spring high tides (1: little sand left).
- Swimming: calm, use care (waves from 2.6 ft, or long swell) or dangerous (from 6.6 ft, or 4.9 ft with a long period), based on how much of the wave reaches this shore given the way it faces. In the U.S., today's and tomorrow's rip current risk comes from the National Weather Service surf zone forecast when it issues one; otherwise we estimate it from the waves.
- Best windows: runs of 2 to 5 hours rated 4 or more and close to the best hour, at least one hour apart.
- Day rating: the average of the best window; a 2-hour window keeps 85% of it and a 3-hour window 95%.
Today, in the best window: sun 0 of 3, warmth 0 of 4, calm sea 1 of 1, water 1 of 1 and tide 1 of 1; minus cold 1; short window: the rating keeps 85%.
It's a guide, not a guarantee: weather changes and every beach is different. Always follow the lifeguard's flags.
Questions about the beach in Jeju City
Is it a beach day in Jeju City today?
Not a beach day: 2/10. No good beach time today.
What are the swimming conditions in Jeju City today?
1.1 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
How warm is the water in Jeju City?
About 74 °F today: nice. That's the sea surface temperature offshore; it can differ a little at the shoreline.
How much sun protection do I need in Jeju City today?
UV reaches 3 (moderate): SPF 30 sunscreen, sunglasses and a hat.
When is low tide in Jeju City?
Today low tide is at 6:07 am and 7:10 pm: that's when there's the most sand. High tide is at 12:57 pm.
What about tomorrow? Will it be a beach day in Jeju City?
Tomorrow, Friday, October 30: a fair beach day (6/10), best from 11:00 am to 3:00 pm.
What beaches are near Jeju City?
Samyang black sand beach (3.9 mi), 이호테우해변 (4.1 mi) and 내도몽돌해변 (4.8 mi). See below for amenities and water quality.
Are there jellyfish or sargassum today?
We don't know: there's no open data on jellyfish, sargassum or closures for each beach. Ask the lifeguard, check the flags or the local beach authority's website.
How is the rating worked out?
From the hourly forecast: sun and clouds, feels-like temperature, rain, wind (and whether it blows onshore or offshore), waves and their period, UV, water temperature and, where there is one, the tide. Each factor adds or takes away a fixed number of points and the rating sums them up out of 10.
More about Jeju City today
Learn more
Our own calculation, using the Open-Meteo forecast (ECMWF, NOAA GFS, Météo-France, Copernicus Marine and CAMS, CC BY 4.0), the tide from Jeju (KHOA) and the sun from astronomy-engine. Korea Hydrographic and Oceanographic Agency (해양수산부 국립해양조사원), harmonic constants of the TideBED reference ports (예측조위(타이드베드) 기준항 조화상수, 2025-08-12), station Jeju (제주, DT_0004), https://www.data.go.kr/data/15145395/fileData.do. Free, no restrictions on use (이용허락범위 제한 없음). Modified by TidePlanet: M2, S2, K1 and O1 from KHOA, the other constituents of those bands inferred from them.