Dumai tides
Today, Thursday, October 29, 2026 · local time (GMT+7) · Riau, Indonesia- 8:55 am4.4 ft
- 9:09 pm2.4 ft
- 1:00 am-2.8 ft
- 4:23 pm-1.6 ft
- Tide now
- 3.2 ft ↓ falling · low 4:23 pm (-1.6 ft)
- Coefficient
- 87 · average coefficient
- Range today
- 7.1 ft
Dumai has no tide station nearby: this tide is calculated with a global ocean model. It is approximate (it may differ from the real tide by a few minutes and inches) and not for navigation. How we calculate it
Today there are high tides at 8:55 am (4.4 ft) and 9:09 pm (2.4 ft) and low tides at 1:00 am and 4:23 pm. Tide coefficient 87. Right now the tide is falling toward the low tide at 4:23 pm. In Dumai the tide is mixed: two high and two low tides a day, but of quite different heights. The next spring tides: from November 10 to 12.
Today's high and low tides
- ▼ Low tide 1:00 am -2.8 ft
- ▲ High tide 8:55 am 4.4 ft · coef. 87
- ▼ Next low tide 4:23 pm -1.6 ft
- ▲ High tide 9:09 pm 2.4 ft · coef. 82
↓ Falling The tide is falling. 6 h 12 min to low tide at 4:23 pm.
Tide coefficient 87 for the 8:55 am high tide and 82 for the 9:09 pm high tide. Average coefficient. The water rises and falls 7.1 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 mean sea level. 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 | 5:56 am · 6:00 pm | Low tide 1:00 am · -2.8 ft | High tide 8:55 am · 4.4 ft | Low tide 4:23 pm · -1.6 ft | High tide 9:09 pm · 2.4 ft | Coef. 87 | 87% | Major periods 1:21 am · 1:54 pm | Medium |
| Fri 30 | 5:56 am · 6:00 pm | Low tide 1:26 am · -2.6 ft | High tide 9:34 am · 3.7 ft | Low tide 5:19 pm · -1.2 ft | High tide 9:46 pm · 2.1 ft | Coef. 76 | 79% | Major periods 2:26 am · 2:58 pm | Medium |
| Sat 31 | 5:56 am · 6:00 pm | Low tide 2:00 am · -2.1 ft | High tide 10:15 am · 2.9 ft | Low tide 6:09 pm · -1.0 ft | High tide 10:27 pm · 1.7 ft | Coef. 63 | 68% | Major periods 3:30 am · 4:00 pm | Medium |
| Sun 1 | 5:56 am · 6:00 pm | Low tide 5:59 am · -1.5 ft | High tide 11:04 am · 2.0 ft | Low tide 6:57 pm · -0.8 ft | High tide 11:20 pm · 1.3 ft | Coef. 50 | 57% | Major periods 4:30 am · 4:58 pm | Medium |
| Mon 2 | 5:56 am · 5:59 pm | Low tide 7:09 am · -1.5 ft | High tide 12:21 pm · 1.1 ft | Low tide 7:47 pm · -0.9 ft | — | Coef. 42 | Last quarter | Major periods 5:25 am · 5:51 pm | Medium |
| Tue 3 | 5:56 am · 5:59 pm | High tide 1:03 am · 1.2 ft | Low tide 8:15 am · -1.8 ft | High tide 3:50 pm · 0.9 ft | Low tide 8:38 pm · -1.1 ft | Coef. 49 | 35% | Major periods 6:16 am · 6:40 pm | Medium |
| Wed 4 | 5:56 am · 5:59 pm | High tide 3:16 am · 1.8 ft | Low tide 9:19 am · -2.2 ft | High tide 4:41 pm · 1.4 ft | Low tide 9:28 pm · -1.5 ft | Coef. 64 | 25% | Major periods 7:03 am · 7:25 pm | Low |
▲ high tide · ▼ low tide · heights above mean sea level. 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 9 to 11 (coefficient 102, 8.0 ft range). The smallest, on October 20 (coefficient 26, 2.1 ft).
Type of tide
In Dumai 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 April 18 (5.0 ft) and the lowest, on September 11 (-3.5 ft).
Reference levels
- Mean sea level (MSL)0.0 ft
Heights above mean sea level.
Questions about the tides in Dumai
What time is high tide today in Dumai?
High tide today is at 8:55 am (4.4 ft) and 9:09 pm (2.4 ft). Low tide is at 1:00 am and 4:23 pm.
What time is high tide tomorrow in Dumai?
On Friday, October 30, high tide at 9:34 am and 9:46 pm and low tide at 1:26 am and 5:19 pm.
What is today's tide coefficient?
87: 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 November 10 to 12, after the new or full moon.
How many tides a day are there in Dumai?
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 mean sea level. 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 Dumai today
Tides near Dumai
- Blue Lagoon ▲ 9:30 am
- Kampung Teluk Kemang ▲ 8:23 am
- Kampung Sirusa ▲ 8:21 am
- Port Dickson ▲ 8:17 am
- Tanjung Sepat ▲ 7:13 am
- Parit Jawa ▲ 10:56 am
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Dumai has no tide station nearby: its tide is calculated with the global FES2022 model, from the nearest model cells offshore (the first one 2.4 mi away). It may differ from the real tide by a few minutes and inches, and more with wind or storms. Heights are above mean sea level, not chart datum, so low tides are negative. Not for navigation. Model attribution: FES2022 Tide was produced by LEGOS, NOVELTIS and CLS, funded by CNES, and distributed by AVISO (https://doi.org/10.24400/527896/a01-2024.004), AVISO licence (https://www.aviso.altimetry.fr/fileadmin/documents/data/License_Aviso.pdf). Modified by TidePlanet: constants interpolated from the nearest model cells offshore; heights above mean sea level.