Tonghae tides
Today, Thursday, October 29, 2026 · local time (GMT+9) · Gangwon, South Korea- 3:55 am1.0 ft
- 6:50 pm0.7 ft
- 11:31 am0.0 ft
- 10:33 pm0.6 ft
- Tide now
- 0.3 ft ↓ falling · low 11:31 am (0.0 ft)
- Coefficient
- 90 · spring tides
- Range today
- 1.0 ft
Today there are high tides at 3:55 am (1.0 ft) and 6:50 pm (0.7 ft) and low tides at 11:31 am and 10:33 pm. Tide coefficient 90. Right now the tide is falling toward the low tide at 11:31 am. In Tonghae the tide is mixed: two high and two low tides a day, but of quite different heights. The next spring tides: from October 27 to 29.
Today's high and low tides
- ▲ High tide 3:55 am 1.0 ft · coef. 90
- ▼ Next low tide 11:31 am 0.0 ft
- ▲ High tide 6:50 pm 0.7 ft · coef. 84
- ▼ Low tide 10:33 pm 0.6 ft
↓ Falling The tide is falling. 2 h 46 min to low tide at 11:31 am.
Tide coefficient 90 for the 3:55 am high tide and 84 for the 6:50 pm high tide. Spring tides. The water rises and falls 1.0 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?
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.
Tides for the next 7 days
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Thu 29 | 6:45 am · 5:29 pm | High tide 3:55 am · 1.0 ft | Low tide 11:31 am · 0.0 ft | High tide 6:50 pm · 0.7 ft | Low tide 10:33 pm · 0.6 ft | Coef. 90 | 88% | Major periods 1:26 am · 1:58 pm | Medium |
| Fri 30 | 6:46 am · 5:28 pm | High tide 4:33 am · 1.0 ft | Low tide 12:28 pm · 0.0 ft | High tide 8:15 pm · 0.7 ft | Low tide 11:00 pm · 0.7 ft | Coef. 80 | 80% | Major periods 2:30 am · 3:03 pm | High |
| Sat 31 | 6:47 am · 5:27 pm | High tide 5:17 am · 1.0 ft | Low tide 1:32 pm · 0.0 ft | — | — | Coef. 67 | 69% | Major periods 3:34 am · 4:05 pm | Medium |
| Sun 1 | 6:48 am · 5:26 pm | High tide 6:12 am · 0.9 ft | Low tide 2:43 pm · 0.1 ft | — | — | Coef. 56 | 58% | Major periods 4:35 am · 5:03 pm | Medium |
| Mon 2 | 6:49 am · 5:25 pm | High tide 7:26 am · 0.9 ft | Low tide 3:55 pm · 0.1 ft | — | — | Coef. 50 | Last quarter | Major periods 5:30 am · 5:56 pm | Medium |
| Tue 3 | 6:50 am · 5:24 pm | High tide 12:01 am · 0.7 ft | Low tide 3:31 am · 0.6 ft | High tide 9:05 am · 0.8 ft | Low tide 5:01 pm · 0.2 ft | Coef. 52 | 36% | Major periods 6:21 am · 6:45 pm | Medium |
| Wed 4 | 6:51 am · 5:23 pm | High tide 12:22 am · 0.7 ft | Low tide 5:15 am · 0.6 ft | High tide 10:48 am · 0.8 ft | Low tide 5:56 pm · 0.3 ft | Coef. 59 | 26% | Major periods 7:09 am · 7:31 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.
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 28 (coefficient 99, 1.0 ft range). The smallest, on October 19 (coefficient 30, 0.6 ft).
Type of tide
In Tonghae the tide is mixed: two high and two low tides a day, but of quite different heights. Types of tides
2026 extremes: the highest tide of the year is on December 26 (1.1 ft) and the lowest, on December 25 (-0.1 ft).
Reference levels
- Highest astronomical tide (HAT)1.1 ft
- Mean higher high water (MHHW)0.9 ft
- Mean high water (MHW)0.8 ft
- Mean sea level (MSL)0.6 ft
- Mean low water (MLW)0.3 ft
- Mean lower low water (MLLW)0.2 ft
- Lowest astronomical tide (LAT)-0.1 ft
Heights above chart datum (CD), the zero of that port's nautical charts.
Questions about the tides in Tonghae
What time is high tide today in Tonghae?
High tide today is at 3:55 am (1.0 ft) and 6:50 pm (0.7 ft). Low tide is at 11:31 am and 10:33 pm.
What time is high tide tomorrow in Tonghae?
On Friday, October 30, high tide at 4:33 am and 8:15 pm and low tide at 12:28 pm and 11:00 pm.
What is today's tide coefficient?
90: spring tides. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides.
When are the next spring tides?
From October 27 to 29, after the new or full moon, with the moon near perigee, so they will be bigger than usual.
How many tides a day are there in Tonghae?
The tide is mixed: two high and two low tides a day, but of quite different heights. Each high tide comes about 50 minutes later than the day before.
What are the heights measured from?
From chart datum (CD), the zero of that port's nautical charts. That is why a low tide can be negative: that day the water drops below that zero.
Can I use these tides for navigation?
No. They are astronomical predictions for planning fishing and outings; for navigation use official publications and nautical charts.
More about Tonghae today
Tides near Tonghae
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Tides from the Donghae Port station (KHOA), 0.9 mi from Tonghae. 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 Donghae Port (동해항, DT_0057), 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.