Barmouth tides
Today, Wednesday, October 28, 2026 · local time (GMT) · Gwynedd, United Kingdom- 9:05 am17.1 ft
- 9:29 pm16.9 ft
- 4:00 am2.5 ft
- 4:26 pm2.5 ft
- Tide now
- 16.7 ft ↓ falling · low 4:46 am (2.9 ft)
- Coefficient
- 101 · big spring tides
- Range today
- 14.6 ft
Today there are high tides at 9:05 am (17.1 ft) and 9:29 pm (16.9 ft) and low tides at 4:00 am and 4:26 pm. Tide coefficient 101. Right now the tide is falling toward the low tide at 4:46 am. In Barmouth the tide is semidiurnal: two high and two low tides a day, of similar height. The next spring tides: from October 26 to 28.
Today's high and low tides
- ▼ Low tide 4:00 am 2.5 ft
- ▲ High tide 9:05 am 17.1 ft · coef. 101
- ▼ Low tide 4:26 pm 2.5 ft
- ▲ High tide 9:29 pm 16.9 ft · coef. 98
↓ Falling The tide is falling. 6 h 50 min to low tide at 4:46 am.
Tide coefficient 101 for the 9:05 am high tide and 98 for the 9:29 pm high tide. Big spring tides. The water rises and falls 14.6 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: the lowest astronomical tide (LAT), the zero of nautical charts in Europe. 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, Wed 28 | 7:06 am · 4:54 pm | Low tide 4:00 am · 2.5 ft | High tide 9:05 am · 17.1 ft | Low tide 4:26 pm · 2.5 ft | High tide 9:29 pm · 16.9 ft | Coef. 101 | 92% | Major periods 12:39 am · 1:10 pm | High |
| Thu 29 | 7:07 am · 4:52 pm | Low tide 4:46 am · 2.9 ft | High tide 9:47 am · 16.9 ft | Low tide 5:16 pm · 2.9 ft | High tide 10:13 pm · 16.3 ft | Coef. 95 | 85% | Major periods 1:42 am · 2:15 pm | Medium |
| Fri 30 | 7:09 am · 4:50 pm | Low tide 5:35 am · 3.7 ft | High tide 10:33 am · 16.3 ft | Low tide 6:08 pm · 3.5 ft | High tide 11:02 pm · 15.2 ft | Coef. 84 | 76% | Major periods 2:47 am · 3:19 pm | Medium |
| Sat 31 | 7:11 am · 4:48 pm | Low tide 6:27 am · 4.5 ft | High tide 11:23 am · 15.4 ft | Low tide 7:06 pm · 4.2 ft | High tide 11:57 pm · 13.9 ft | Coef. 71 | 65% | Major periods 3:50 am · 4:20 pm | Medium |
| Sun 1 | 7:13 am · 4:46 pm | Low tide 7:26 am · 5.3 ft | High tide 12:21 pm · 14.3 ft | Low tide 8:16 pm · 4.7 ft | — | Coef. 57 | Last quarter | Major periods 4:49 am · 5:16 pm | Medium |
| Mon 2 | 7:15 am · 4:44 pm | High tide 1:02 am · 12.7 ft | Low tide 8:36 am · 5.8 ft | High tide 1:30 pm · 13.4 ft | Low tide 9:34 pm · 4.8 ft | Coef. 52 | 43% | Major periods 5:42 am · 6:08 pm | Medium |
| Tue 3 | 7:17 am · 4:42 pm | High tide 2:19 am · 11.9 ft | Low tide 9:54 am · 5.7 ft | High tide 2:50 pm · 13.0 ft | Low tide 10:48 pm · 4.3 ft | Coef. 49 | 32% | Major periods 6:32 am · 6:55 pm | Medium |
▲ high tide · ▼ low tide · heights above chart datum (LAT). 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 102, 14.7 ft range). The smallest, from October 19 to 20 (coefficient 26, 4.3 ft).
Type of tide
In Barmouth the tide is semidiurnal: two high and two low tides a day, of similar height. Types of tides
2026 extremes: the highest tide of the year is on December 26 (17.7 ft) and the lowest, on August 14 (0.6 ft).
Reference levels
- Highest astronomical tide (HAT)18.6 ft
- Mean higher high water (MHHW)14.4 ft
- Mean high water (MHW)14.1 ft
- Mean sea level (MSL)8.6 ft
- Mean low water (MLW)3.8 ft
- Mean lower low water (MLLW)3.6 ft
- Lowest astronomical tide (LAT)0.0 ft
Heights above chart datum: the lowest astronomical tide (LAT), the zero of nautical charts in Europe.
Questions about the tides in Barmouth
What time is high tide today in Barmouth?
High tide today is at 9:05 am (17.1 ft) and 9:29 pm (16.9 ft). Low tide is at 4:00 am and 4:26 pm.
What time is high tide tomorrow in Barmouth?
On Thursday, October 29, high tide at 9:47 am and 10:13 pm and low tide at 4:46 am and 5:16 pm.
What is today's tide coefficient?
101: big 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 26 to 28, 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 Barmouth?
The tide is semidiurnal: two high and two low tides a day, of similar height. Each high tide comes about 50 minutes later than the day before.
What are the heights measured from?
From chart datum: the lowest astronomical tide (LAT), the zero of nautical charts in Europe. 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 Barmouth today
Tides near Barmouth
Each place with its own tide station; next to it, the time of its first high tide today.
Learn more
Tides from the Barmouth station (Environment Agency), 0.6 mi from Barmouth. Times and heights are its predictions. Station data attribution: This uses Environment Agency tide gauge data from the real-time data API (Beta): Barmouth (E73224), https://environment.data.gov.uk/flood-monitoring/id/stations/E73224. Contains public sector information licensed under the Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). Modified: harmonic constants fitted by TidePlanet from the 15-minute sea levels of 2025-10-29 to 2026-10-22 (348 days).