Shirahama tides
Today, Thursday, October 29, 2026 · local time (GMT+9) · Okinawa, Japan- 10:31 am5.0 ft
- 9:19 pm5.4 ft
- 3:35 am0.3 ft
- 3:32 pm3.1 ft
- Tide now
- 3.3 ft ↓ falling · low 3:32 pm (3.1 ft)
- Coefficient
- 74 · average coefficient
- Range today
- 5.2 ft
Today there are high tides at 10:31 am (5.0 ft) and 9:19 pm (5.4 ft) and low tides at 3:35 am and 3:32 pm. Tide coefficient 74. Right now the tide is falling toward the low tide at 3:32 pm. In Shirahama 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 3:35 am 0.3 ft
- ▲ High tide 10:31 am 5.0 ft · coef. 74
- ▼ Next low tide 3:32 pm 3.1 ft
- ▲ High tide 9:19 pm 5.4 ft · coef. 68
↓ Falling The tide is falling. 1 h 16 min to low tide at 3:32 pm.
Tide coefficient 74 for the 10:31 am high tide and 68 for the 9:19 pm high tide. Average coefficient. The water rises and falls 5.2 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 | 6:50 am · 6:08 pm | Low tide 3:35 am · 0.3 ft | High tide 10:31 am · 5.0 ft | Low tide 3:32 pm · 3.1 ft | High tide 9:19 pm · 5.4 ft | Coef. 74 | 88% | Major periods 1:48 am · 2:20 pm | Medium |
| Fri 30 | 6:50 am · 6:07 pm | Low tide 4:22 am · 0.5 ft | High tide 11:30 am · 4.6 ft | Low tide 4:11 pm · 3.4 ft | High tide 9:54 pm · 5.2 ft | Coef. 60 | 80% | Major periods 2:53 am · 3:25 pm | Medium |
| Sat 31 | 6:51 am · 6:06 pm | Low tide 5:12 am · 0.9 ft | High tide 12:34 pm · 4.4 ft | Low tide 4:54 pm · 3.6 ft | High tide 10:35 pm · 4.9 ft | Coef. 47 | 69% | Major periods 3:57 am · 4:27 pm | Medium |
| Sun 1 | 6:51 am · 6:06 pm | Low tide 6:06 am · 1.2 ft | High tide 1:40 pm · 4.2 ft | Low tide 5:54 pm · 3.6 ft | High tide 11:32 pm · 4.6 ft | Coef. 39 | 58% | Major periods 4:57 am · 5:25 pm | Medium |
| Mon 2 | 6:52 am · 6:05 pm | Low tide 7:06 am · 1.5 ft | High tide 2:36 pm · 4.2 ft | Low tide 7:15 pm · 3.5 ft | — | Coef. 36 | Last quarter | Major periods 5:53 am · 6:19 pm | Medium |
| Tue 3 | 6:53 am · 6:04 pm | High tide 12:54 am · 4.5 ft | Low tide 8:08 am · 1.6 ft | High tide 3:17 pm · 4.3 ft | Low tide 8:33 pm · 3.1 ft | Coef. 40 | 36% | Major periods 6:44 am · 7:08 pm | Medium |
| Wed 4 | 6:53 am · 6:04 pm | High tide 2:23 am · 4.5 ft | Low tide 9:05 am · 1.7 ft | High tide 3:51 pm · 4.5 ft | Low tide 9:34 pm · 2.5 ft | Coef. 49 | 26% | Major periods 7:31 am · 7:53 pm | Low |
▲ 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 10 to 12 (coefficient 103, 5.5 ft range). The smallest, from October 3 to 4 (coefficient 32, 2.5 ft).
Type of tide
In Shirahama 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 (6.7 ft) and the lowest, on January 4 (-0.7 ft).
Reference levels
- Highest astronomical tide (HAT)6.7 ft
- Mean higher high water (MHHW)5.3 ft
- Mean high water (MHW)5.1 ft
- Mean sea level (MSL)3.4 ft
- Mean low water (MLW)1.7 ft
- Mean lower low water (MLLW)1.0 ft
- Lowest astronomical tide (LAT)-0.7 ft
Heights above chart datum (CD), the zero of that port's nautical charts.
Questions about the tides in Shirahama
What time is high tide today in Shirahama?
High tide today is at 10:31 am (5.0 ft) and 9:19 pm (5.4 ft). Low tide is at 3:35 am and 3:32 pm.
What time is high tide tomorrow in Shirahama?
On Friday, October 30, high tide at 11:30 am and 9:54 pm and low tide at 4:22 am and 4:11 pm.
What is today's tide coefficient?
74: average coefficient. 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 Shirahama?
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 Shirahama today
Tides near Shirahama
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Tides from the Iriomotejima station (JMA), 0.8 mi from Shirahama. 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 Iriomotejima (西表), https://www.data.jma.go.jp/kaiyou/db/tide/suisan/suisan.php?stn=IJ. 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.