Rifu tides
Today, Thursday, October 29, 2026 · local time (GMT+9) · Miyagi, Japan- 6:19 am4.7 ft
- 4:22 pm5.5 ft
- 10:58 am3.5 ft
- 11:57 pm0.1 ft
- Tide now
- 5.5 ft ↓ falling · low 11:57 pm (0.1 ft)
- Coefficient
- 92 · spring tides
- Range today
- 5.4 ft
Today there are high tides at 6:19 am (4.7 ft) and 4:22 pm (5.5 ft) and low tides at 10:58 am and 11:57 pm. Tide coefficient 92. Right now the tide is falling toward the low tide at 11:57 pm. In Rifu 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 6:19 am 4.7 ft · coef. 92
- ▼ Low tide 10:58 am 3.5 ft
- ▲ High tide 4:22 pm 5.5 ft · coef. 87
- ▼ Next low tide 11:57 pm 0.1 ft
↓ Falling The tide is falling. 7 h 23 min to low tide at 11:57 pm.
Tide coefficient 92 for the 6:19 am high tide and 87 for the 4:22 pm high tide. Spring tides. The water rises and falls 5.4 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 | 5:59 am · 4:41 pm | High tide 6:19 am · 4.7 ft | Low tide 10:58 am · 3.5 ft | High tide 4:22 pm · 5.5 ft | Low tide 11:57 pm · 0.1 ft | Coef. 92 | 88% | Major periods 12:36 am · 1:08 pm | Medium |
| Fri 30 | 6:00 am · 4:39 pm | High tide 7:16 am · 4.4 ft | Low tide 11:28 am · 3.6 ft | High tide 4:55 pm · 5.4 ft | — | Coef. 79 | 80% | Major periods 1:41 am · 2:13 pm | High |
| Sat 31 | 6:01 am · 4:38 pm | Low tide 12:45 am · 0.4 ft | High tide 8:24 am · 4.1 ft | Low tide 12:03 pm · 3.8 ft | High tide 5:33 pm · 5.1 ft | Coef. 63 | 69% | Major periods 2:45 am · 3:16 pm | Medium |
| Sun 1 | 6:02 am · 4:37 pm | Low tide 1:41 am · 0.8 ft | High tide 9:57 am · 4.0 ft | Low tide 12:56 pm · 3.8 ft | High tide 6:19 pm · 4.7 ft | Coef. 48 | 58% | Major periods 3:45 am · 4:14 pm | Medium |
| Mon 2 | 6:03 am · 4:36 pm | Low tide 2:49 am · 1.2 ft | High tide 11:21 am · 4.0 ft | Low tide 2:50 pm · 3.8 ft | High tide 7:32 pm · 4.2 ft | Coef. 36 | Last quarter | Major periods 4:41 am · 5:07 pm | Medium |
| Tue 3 | 6:04 am · 4:35 pm | Low tide 4:09 am · 1.6 ft | High tide 12:06 pm · 4.1 ft | Low tide 5:26 pm · 3.4 ft | High tide 10:14 pm · 3.8 ft | Coef. 40 | 36% | Major periods 5:32 am · 5:56 pm | Medium |
| Wed 4 | 6:05 am · 4:34 pm | Low tide 5:26 am · 1.9 ft | High tide 12:35 pm · 4.3 ft | Low tide 6:44 pm · 2.7 ft | — | Coef. 47 | 26% | Major periods 6:20 am · 6:42 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 103, 5.3 ft range). The smallest, on October 19 (coefficient 25, 2.3 ft).
Type of tide
In Rifu 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 14 (5.6 ft) and the lowest, on May 18 (-0.8 ft).
Reference levels
- Highest astronomical tide (HAT)5.8 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)1.7 ft
- Mean lower low water (MLLW)0.9 ft
- Lowest astronomical tide (LAT)-0.8 ft
Heights above chart datum (CD), the zero of that port's nautical charts.
Questions about the tides in Rifu
What time is high tide today in Rifu?
High tide today is at 6:19 am (4.7 ft) and 4:22 pm (5.5 ft). Low tide is at 10:58 am and 11:57 pm.
What time is high tide tomorrow in Rifu?
On Friday, October 30, high tide at 7:16 am and 4:55 pm and low tide at 11:28 am.
What is today's tide coefficient?
92: 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 Rifu?
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 Rifu today
Tides near Rifu
- Tagajō ▲ 6:07 am
- Higashimatsushima ▲ 6:08 am
- Sakamoto ▲ 6:15 am
- Kesennuma ▲ 5:59 am
- Rikuzen-Takata ▲ 6:01 am
- Tomioka ▲ 6:23 am
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Tides from the Shiogama station (JMA), 3.2 mi from Rifu. Times and heights are its predictions. 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 Shiogama (塩釜), https://www.data.jma.go.jp/kaiyou/db/tide/suisan/suisan.php?stn=SG. 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.