TidePlanet

Today in Gunsan there are high tides at 4:50 am (21.2 ft) and 5:27 pm (24.4 ft) and low tides at 10:59 am and 11:40 pm. Tide coefficient 100. Right now the tide is falling toward the low tide at 10:59 am. The sun rises at 6:52 am and sets at 5:41 pm: 10 h 49 min of daylight. The moon is 88% illuminated (waning gibbous) and rises at 7:51 pm. Major solunar periods run from 1:36 am to 3:36 am and from 2:08 pm to 4:08 pm. The next spring tides arrive from October 27 to 29. The sea is smooth, with 0.6 ft waves. There's a light breeze from the east-northeast (4 mph). Overcast, 42 °F.

Fishing

Fishing in Gunsan today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
8
Good day · 8 out of 10 5:10–6:10 pm Also 10:00–10:50 am and 10:40 pm–12:00 am
  • High tide at 5:27 pm, coefficient 97
  • Sunset at 5:41 pm, golden hour from 5:05 pm
  • Falling pressure (−0.21 inHg in 24 h), light offshore wind (6 mph) and calm sea (1.6 ft waves)
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 100 (big spring tides)

Your day at a glance

The best window, 5:10 pm to 6:10 pm, combines the 5:27 pm high tide, sunset and falling pressure. Also good from 10:00 am to 10:50 am, with the 10:59 am low tide, moonset and falling pressure. Also good from 10:40 pm to 12:00 am, with the 11:40 pm low tide, falling pressure and some swell.

Species with the most records nearby: striped mullet, Japanese seabass and red seabream. What you can catch

How it works · Next 7 days

Beach

Beach day in Gunsan

Beach forecast, 7 days →

Is it a beach day?

0
Not a beach day · 0 out of 10 No good beach time today.
  • Calm for swimming: 1.1 ft waves
  • Low tide at 10:59 am: more sand
  • Cloudy (99% cloud cover)
  • Feels like 50 °F: chilly for the beach
  • Light offshore wind (8 mph): it blows floats and inflatables out to sea
  • Water at 62 °F (cold)

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 62 °F

    Cold: ease in slowly.

  • Sun & sunscreen UV 2 · SPF 15

    Max UV 2 (low): SPF 15 sunscreen.

  • Wind 8 mph

    Offshore breeze (8 mph). Watch floats and inflatables: offshore wind carries them out to sea.

  • Tide & sand 10:59 am

    Low tide at 10:59 am and 11:40 pm: that's when there's the most sand. High tide at 4:50 am and 5:27 pm. Coefficient 100 (spring tides): little sand left at high tide.

We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days

Beaches near Gunsan

We don't know of any named beaches within 6.2 mi of Gunsan.

Missing one? Beaches come from OpenStreetMap: you can add it there. Add or fix on OpenStreetMap

Beaches and amenities: © OpenStreetMap contributors (ODbL).

Tides

Tides in Gunsan

Tides for 7 days →

Today's high and low tides

  • ▲ High tide 4:50 am 21.2 ft · coef. 100
  • ▲ High tide 5:27 pm 24.4 ft · coef. 97
  • ▼ Low tide 11:40 pm 3.3 ft

↓ Falling The tide is falling. 4 h 1 min to low tide at 10:59 am.

Tide coefficient 100 for the 4:50 am high tide and 97 for the 5:27 pm high tide. Big spring tides. The water rises and falls 24.5 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?

2026 extremes: the highest tide of the year is on April 20 (25.1 ft) and the lowest, on April 19 (-0.6 ft).

Semidiurnal: two high and two low tides a day, of similar height.

Heights above chart datum (CD), the zero of that port's nautical charts. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. chart datum (CD)

Tide coefficient and range in October

The biggest tides of the month came from October 27 to 28 (coefficient 103, 25.1 ft range). The smallest, from October 19 to 20 (coefficient 27, 7.5 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 6:52 am · 5:41 pm High tide 4:50 am · 21.2 ft Low tide 10:59 am · -0.2 ft High tide 5:27 pm · 24.4 ft Low tide 11:40 pm · 3.3 ft Coef. 100 88% Major periods 1:36 am · 2:08 pm Medium
Fri 30 6:53 am · 5:40 pm High tide 5:30 am · 20.3 ft Low tide 11:41 am · 0.7 ft High tide 6:13 pm · 23.3 ft — Coef. 93 80% Major periods 2:40 am · 3:13 pm High
Sat 31 6:54 am · 5:39 pm Low tide 12:27 am · 4.6 ft High tide 6:15 am · 19.0 ft Low tide 12:27 pm · 2.0 ft High tide 7:04 pm · 21.7 ft Coef. 80 69% Major periods 3:44 am · 4:15 pm Medium
Sun 1 6:55 am · 5:38 pm Low tide 1:21 am · 6.1 ft High tide 7:07 am · 17.6 ft Low tide 1:23 pm · 3.8 ft High tide 8:06 pm · 20.0 ft Coef. 66 58% Major periods 4:45 am · 5:13 pm Medium
Mon 2 6:56 am · 5:37 pm Low tide 2:29 am · 7.4 ft High tide 8:16 am · 16.2 ft Low tide 2:34 pm · 5.6 ft High tide 9:23 pm · 18.6 ft Coef. 52 Last quarter Major periods 5:40 am · 6:06 pm Medium
Tue 3 6:57 am · 5:36 pm Low tide 3:55 am · 7.9 ft High tide 9:51 am · 15.6 ft Low tide 4:07 pm · 6.6 ft High tide 10:50 pm · 18.1 ft Coef. 45 36% Major periods 6:31 am · 6:55 pm Medium
Wed 4 6:58 am · 5:35 pm Low tide 5:22 am · 7.3 ft High tide 11:29 am · 16.3 ft Low tide 5:40 pm · 6.6 ft — Coef. 48 26% Major periods 7:19 am · 7:41 pm Medium

▲ high tide · ▼ low tide · heights above chart datum (CD). Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.

Where this tide comes from

A · Official station

Tides from the Janghang station (KHOA), 2.4 mi from Gunsan. Times and heights are its predictions.

Station data attribution: Korea Hydrographic and Oceanographic Agency (해양수산부 국립해양조사원), harmonic constants of the TideBED reference ports (예측조위(타이드베드) 기준항 조화상수, 2025-08-12), station Janghang (장항, DT_0024), 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.

How we calculate the tide

Sea and waves

The sea at Gunsan

7-day waves

Sea stateSea state: smooth

Smooth Douglas 2 · gentle breeze, Beaufort 3
Waves 0.6 ft · 3.6 s from the west-northwest (299°)
Swell 0.4 ft · 3.0 s from the west-northwest
Current 0.2 mph toward the WSW

The waves you may find

  • Most commonMost common0.3 ft
  • Significant0.6 ft
  • Highest expectedHighest1.2 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 1.2 ft. Before heading out, expect waves of up to 1.2 ft.

Wind on the coast and offshore

On the coast 4 mph ENE · gusts 9
Offshore (12 mi W)Offshore 9 mph E · gusts 15

Cross-offshore wind. The coast faces west and the wind comes off the land at an angle: calmer water near the shore, and bait and boats drift out to sea.

Cross-offshore Hourly wind →

Wave height, next 7 daysWaves, next 7 days

Waves stay much the same all week. The biggest waves arrive on Friday 30: 2.8 ft with a period of 4 s, from the west-southwest (slight).

Water temperature

Water temperature →
Water now61.9 °F
Today 61.5–62.4 °F air: 40 / 56 °F
Satellite (2 days ago) 67.8 °F measured 1.4 mi away

The satellite measured 5.9 °F more 2 days ago than the model gives now: the water is probably warmer than the forecast says.

Water temperature changes how fish behave: in very cold or very warm water they feed less. The water cools over the next few days: about 59.3 °F by Wednesday 4.

Water colder than normal for late October (−1.6 °F).

Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses

Water temperature →

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 6:58 am (local time).

Diving

Diving in Gunsan today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: good
10
Great day · 10 out of 10 10:10–11:50 am Also 4:50–5:40 pm
  • Slack water around low tide (10:59 am): little current from 10:40 am to 11:20 am
  • 0.3 ft swell at 3 s from the west-northwest: barely any surge
  • Light offshore wind (5 mph)
  • 0.2 mph current toward the southwest, weak (model)
  • Sun high: more light underwater
Swell 0.3 ft 3 s · from the WNW
Likely visibility Good Snorkeling: good
Water and suit 61.5 °F 7 mm wetsuit
Current 0.2 mph toward the SW
  • Slack water today: high tide 4:50 am (4:30–5:10 am), low tide 10:59 am (10:40–11:20 am), high tide 5:27 pm (5:10–5:50 pm) and low tide 11:40 pm (11:20 pm–12:00 am)
  • Likely visibility: good. Swell (up to 3.2 ft at 6 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
  • Water at 61.5–62.4 °F: a 7 mm wetsuit, with hood and booties.
  • Snorkeling: good, calm sea and light wind.
  • Night dive: dark from 6:07 pm. Waning gibbous (88%), rising at 7:51 pm: a bright night.

Your diving day at a glance

The best window, 10:10 am to 11:50 am, combines slack water at low tide, little swell, light wind, weak current and the sun high. Also good from 4:50 pm to 5:40 pm, with slack water at high tide, little swell, light wind and weak current.

Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.

Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.

How it works · Next 7 days

Dive sites, wrecks and dive shops nearby

We have no dive sites, dive shops or wrecks on record within 12 mi of Gunsan.

If you know one, you can add it to OpenStreetMap and it will show up here after the next update. Missing one? Add it to OpenStreetMap

Sites: © OpenStreetMap contributors (ODbL).

Weather

Weather in Gunsan

14-day weather

Now in Gunsan

Now 42 °F Overcast · feels like 37 °F · 40 / 56 °F
Low / high
40 / 56 °F
Rain
0.04 in · 91%
Clouds
100%
Humidity
69%
Dew pointDew point
33 °F
Visibility
15 mi
UV indexUV
0 · low
Air qualityAir
Moderate · 54
Saharan dust
No

Pressure and fishing

  • ↗ RisingRising Anglers say fish bite less for a while
  • → SteadySteady · now Anglers expect normal activity
  • ↘ FallingFalling Anglers say fish feed more before the change

Steady now (−0.01 inHg in 3 hours). Over the next 48 hours: −0.08 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Today, hour by hourHour by hour

Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.

Time 12:00 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Sky OvercastOvercastOvercastOvercastOvercastOvercastOvercastLight drizzle
Temperature 40°40°41°45°53°56°55°54°
Wind (mph) 4 NE4 NE5 NE6 ESE4 ESE8 S6 SSE8 S
Gusts 7981111161015
Waves 0.8 ft0.7 ft0.6 ft0.5 ft0.6 ft0.9 ft1.6 ft2.6 ft
Rain 0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in
  • 6:00 am 41° 5 NE 0.6 ft
  • 9:00 am 45° 6 ESE 0.5 ft
  • 12:00 pm 53° 4 ESE 0.6 ft
  • 3:00 pm 56° 8 S 0.9 ft
  • 6:00 pm 55° 6 SSE 1.6 ft
  • 9:00 pm 54° 8 S 2.6 ft
  • 12:00 am 53° 6 SSE 2.8 ft
  • 3:00 am 52° 4 SE 2.7 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Light drizzle 40 / 56 °F 8 mph SE 2.8 ft 4:50 am · 5:27 pm
Fri 30 Light drizzle 50 / 64 °F 8 mph SW 2.8 ft 5:30 am · 6:13 pm
Sat 31 Overcast 44 / 60 °F 11 mph NW 2.8 ft 6:15 am · 7:04 pm
Sun 1 Heavy drizzle 45 / 53 °F 8 mph ENE 1.4 ft 7:07 am · 8:06 pm
Mon 2 Drizzle 47 / 63 °F 11 mph NNW 2.1 ft 8:16 am · 9:23 pm
Tue 3 Overcast 39 / 62 °F 4 mph NE 1.9 ft 9:51 am · 10:50 pm
Wed 4 Overcast 48 / 62 °F 7 mph ENE 2.0 ft 11:29 am
Thu 5 Clear sky 44 / 63 °F 10 mph WNW 0.5 ft 12:06 am · 12:43 pm
Fri 6 Partly cloudy 38 / 52 °F 11 mph NNW 0.6 ft 1:04 am · 1:37 pm
Sat 7 Overcast 37 / 54 °F 5 mph NE 1.3 ft 1:49 am · 2:20 pm
Sun 8 Light drizzle 35 / 48 °F 17 mph NNW 5.0 ft 2:28 am · 2:58 pm
Mon 9 Overcast 31 / 47 °F 8 mph NNE 3.7 ft 3:03 am · 3:33 pm
Tue 10 Overcast 43 / 56 °F 9 mph NW 3.7 ft 3:36 am · 4:06 pm
Wed 11 Overcast 42 / 60 °F 9 mph SSW 1.6 ft 4:07 am · 4:39 pm
  • Fri 30 Light drizzle 50° / 64° 2.8 ft
  • Sat 31 Overcast 44° / 60° 2.8 ft
  • Sun 1 Heavy drizzle 45° / 53° 1.4 ft
  • Mon 2 Drizzle 47° / 63° 2.1 ft
  • Tue 3 Overcast 39° / 62° 1.9 ft
  • Wed 4 Overcast 48° / 62° 2.0 ft
  • Thu 5 Clear sky 44° / 63° 0.5 ft
See all 14 days →

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 6:58 am (local time).

Sun

The sun in Gunsan

Sunrise and sunset →

Sunrise and sunset

Rises 6:52 am in the ESE (106°)ESE
Sets 5:41 pm in the WSW (254°)WSW
  • First light 5:56 am
  • Full dark 6:37 pm
  • Civil dawn 6:26 am
  • Civil dusk 6:07 pm
  • Solar noon 12:17 pm (41° high)
  • Daylight 10 h 49 min (−2 min)
  • Evening golden hour 5:05 pm
  • Full dark 6:37 pm

Golden hour and the day-night map

Morning golden hour6:52–7:28 am
Evening golden hour5:05–5:41 pm
Gunsan

Today the sun is 92,344,074 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Gunsan

The moon for 7 days →

Moon phase and position

Waning gibbous · 88% 88% illuminated · 18.5 days old New moon on Mon, Nov 9 · 4:03 pm
Rises 7:51 pm in the NE (55°)NE
Sets 11:29 am tomorrow · in the NW (305°) · set at 10:23 am
Transit 2:36 am overhead
Visible 15 h 38 min from 7:51 pm to 11:29 am

Today the moon is 226,480 mi away and looks 32′ 46″ across.

Solunar periods

Today's activity: medium
  • 1:36–3:36 am Major · the moon passes overhead · high activity
  • 2:08–4:08 pm Major · the moon passes underfoot · high activity
  • 9:53–10:53 am Minor · moonset · medium activity
  • 7:21–8:21 pm Minor · moonrise · medium activity

According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.

Upcoming moon phases

2026 moon calendar →
  • Last quarter Mon, Nov 2 · 5:29 amNov 2 in 4 days
  • New moon Mon, Nov 9 · 4:03 pmNov 9 in 11 days
  • First quarter Tue, Nov 17 · 8:48 pmNov 17 in 19 days
  • Full moon Tue, Nov 24 · 11:54 pmNov 24 in 26 days

Perigee on October 29, 226,426 mi away, coinciding with the spring tides from October 27 to 29: they will be stronger than usual.

Place

Where to fish in Gunsan

All places in Jeollabuk-do →

Piers, ramps and tackle shops nearby

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap

Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.

Tides near GunsanTides nearby

All places in Jeollabuk-do, A to Z (36) →

Gunsan at a glance

  • Town or city of about 264,656 people. Coordinates: 35.979° N, 126.711° E.
  • The nearest tide station, Janghang, is 2.4 mi to the northwest.
  • Its coast faces west.
  • Beaches and harbors nearby: Janghanghang (2.3 mi), Kunsan-hang (4.0 mi).

Questions about GunsanQuestions

What time is high tide today in Gunsan?

Today in Gunsan there are high tides at 4:50 am (21.2 ft) and 5:27 pm (24.4 ft) and low tides at 10:59 am and 11:40 pm. Tide coefficient 100.

What time is sunset today in Gunsan?

At 5:41 pm. There is light until the end of civil twilight, at 6:07 pm.

What time is sunrise tomorrow in Gunsan?

At 6:53 am. First light comes at 5:57 am.

What phase is the moon today?

Waning gibbous, 88% illuminated. New moon on Mon, Nov 9 · 4:03 pm.

When are the next spring tides?

From October 27 to 29, together with the lunar perigee: they will be stronger than usual.

What are today's solunar periods?

Major 1:36–3:36 am, Minor 9:53–10:53 am, Major 2:08–4:08 pm, Minor 7:21–8:21 pm. Today's activity is medium.

What's the weather like today in Gunsan?

Light drizzle, from 40 °F to 56 °F, with a light breeze from the east-northeast (4 mph) and a 91% chance of rain.

How is the sea today in Gunsan?

Smooth (Douglas 2): 0.6 ft waves with a period of 3.6 s from the west-northwest. The water is 61.9 °F.

When is the best time to visit Gunsan?

The best time to visit Gunsan is in October and in May: highs of 71 °F to 74 °F, about 5 rainy days a month and 7 hours of sunshine a day.

Can I use this data for navigation?

No. These are predictions for fishing and leisure; for navigation, use the official publications.

Where this data comes from

Tide: Janghang reference port of the Korea Hydrographic and Oceanographic Agency (KHOA, 국립해양조사원): M2, S2, K1 and O1 from its published harmonic constants, free of use restrictions; the other constituents are inferred from those four by TidePlanet. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).

Spotted a mistake? Tell us · How we calculate the tide

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