Ashiya tides
Today, Thursday, October 29, 2026 · local time (GMT+9) · Fukuoka, Japan- 11:49 am4.7 ft
- 11:06 pm5.4 ft
- 5:30 am0.6 ft
- 5:03 pm2.0 ft
- Tide now
- 2.1 ft ↓ falling · low 5:03 pm (2.0 ft)
- Coefficient
- 90 · spring tides
- Range today
- 4.8 ft
Today there are high tides at 11:49 am (4.7 ft) and 11:06 pm (5.4 ft) and low tides at 5:30 am and 5:03 pm. Tide coefficient 90. Right now the tide is falling toward the low tide at 5:03 pm. In Ashiya 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
- ▼ Low tide 5:30 am 0.6 ft
- ▲ High tide 11:49 am 4.7 ft · coef. 90
- ▼ Next low tide 5:03 pm 2.0 ft
- ▲ High tide 11:06 pm 5.4 ft · coef. 84
↓ Falling The tide is falling. 28 min to low tide at 5:03 pm.
Tide coefficient 90 for the 11:49 am high tide and 84 for the 11:06 pm high tide. Spring tides. The water rises and falls 4.8 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 | 6:34 am · 5:28 pm | Low tide 5:30 am · 0.6 ft | High tide 11:49 am · 4.7 ft | Low tide 5:03 pm · 2.0 ft | High tide 11:06 pm · 5.4 ft | Coef. 90 | 88% | Major periods 1:19 am · 1:51 pm | Medium |
| Fri 30 | 6:35 am · 5:27 pm | Low tide 6:18 am · 0.9 ft | High tide 12:36 pm · 4.3 ft | Low tide 5:38 pm · 2.3 ft | High tide 11:44 pm · 5.1 ft | Coef. 76 | 80% | Major periods 2:24 am · 2:56 pm | Medium |
| Sat 31 | 6:35 am · 5:26 pm | Low tide 7:11 am · 1.2 ft | High tide 1:32 pm · 3.9 ft | Low tide 6:19 pm · 2.5 ft | — | Coef. 59 | 69% | Major periods 3:28 am · 3:59 pm | Medium |
| Sun 1 | 6:36 am · 5:25 pm | High tide 12:36 am · 4.7 ft | Low tide 8:16 am · 1.6 ft | High tide 2:48 pm · 3.6 ft | Low tide 7:16 pm · 2.7 ft | Coef. 52 | 58% | Major periods 4:28 am · 4:57 pm | Medium |
| Mon 2 | 6:37 am · 5:24 pm | High tide 2:20 am · 4.3 ft | Low tide 9:37 am · 1.8 ft | High tide 4:18 pm · 3.6 ft | Low tide 9:05 pm · 2.8 ft | Coef. 41 | Last quarter | Major periods 5:24 am · 5:50 pm | Medium |
| Tue 3 | 6:38 am · 5:23 pm | High tide 4:18 am · 4.2 ft | Low tide 10:59 am · 1.9 ft | High tide 5:33 pm · 3.8 ft | Low tide 11:19 pm · 2.5 ft | Coef. 46 | 36% | Major periods 6:15 am · 6:39 pm | Medium |
| Wed 4 | 6:39 am · 5:23 pm | High tide 5:40 am · 4.2 ft | Low tide 12:04 pm · 1.8 ft | High tide 6:28 pm · 4.2 ft | — | Coef. 58 | 26% | Major periods 7:02 am · 7:25 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 27 (coefficient 105, 5.1 ft range). The smallest, on October 19 (coefficient 22, 1.6 ft).
Type of tide
In Ashiya 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 August 13 (6.1 ft) and the lowest, on December 25 (-0.3 ft).
Reference levels
- Highest astronomical tide (HAT)6.4 ft
- Mean higher high water (MHHW)4.6 ft
- Mean high water (MHW)4.4 ft
- Mean sea level (MSL)3.0 ft
- Mean low water (MLW)1.5 ft
- Mean lower low water (MLLW)1.2 ft
- Lowest astronomical tide (LAT)-0.5 ft
Heights above chart datum (CD), the zero of that port's nautical charts.
Questions about the tides in Ashiya
What time is high tide today in Ashiya?
High tide today is at 11:49 am (4.7 ft) and 11:06 pm (5.4 ft). Low tide is at 5:30 am and 5:03 pm.
What time is high tide tomorrow in Ashiya?
On Friday, October 30, high tide at 12:36 pm and 11:44 pm and low tide at 6:18 am and 5:38 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 Ashiya?
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 Ashiya today
Tides near Ashiya
- Fukutsu ▲ 12:00 pm
- Shimonoseki ▲ 11:04 am
- Kanda ▲ 10:53 am
- Onoda ▲ 10:50 am
- Itoshima ▲ 11:44 am
- Nagato ▲ 12:56 pm
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Ashiya has no station of its own, so we use the tide at Sunatsu (JMA), 13 mi away. On the open coast the difference is usually a few minutes and inches; inside estuaries, rivers and enclosed bays it can be much larger. Station data attribution: Source: Japan Meteorological Agency website (出典：気象庁ホームページ), tide table (潮位表) for Sunatsu (砂津), https://www.data.jma.go.jp/kaiyou/db/tide/suisan/suisan.php?stn=N0. Public Data License (Version 1.0) (https://www.digital.go.jp/resources/open_data/public_data_license_v1.0), compatible with CC BY 4.0. Modified by TidePlanet (気象庁「潮位表」を加工して作成): harmonic constants fitted from the hourly prediction of 2025–2026; not an official JMA product.