If you’ve ever timed a fishing trip badly enough to arrive at low tide and find your kayak stranded on mud, you already know why tide predictions matter in Dunmore East. The village sits on one of Ireland’s most tidally active coastlines, with heights swinging from near 0.5 m to over 4 m twice a day. Getting the timing right isn’t a luxury — it’s the difference between a productive day on the water and a long walk of shame back to the harbour.

4 related posts

Next High Tide: 09:45 ·
Next Low Tide: 03:00 ·
Location: Dunmore East, Ireland ·
Tide Source: ADMIRALTY EasyTide ·
7-Day Chart: Available

Quick snapshot

1Confirmed facts
  • Semi-diurnal tides bring two highs and two lows daily (Tides4Fishing)
  • Tide range spans 3.5–4.2 m on highs, 0.5–1.0 m on lows (Tides4Fishing)
  • UKHO Admiralty provides official predictions under PortID 0761 (UKHO EasyTide)
2What’s unclear
  • Exact tide tables for 2026 remain unavailable in public sources
  • Live real-time tide data is not publicly accessible
  • Regional comparisons with nearby Waterford City ports lack published data
3Timeline signal
  • On April 1, high tide at 5:50 h (4.1 m) and 18:19 h (3.6 m) (Tides4Fishing)
  • Solunar activity peaks reach 96 (very high) on May 26 (Tides4Fishing)
  • Lowest recorded tide around 0.48 m at 12:22 h (TidesChart)
4What’s next
  • Check the 7-day chart for upcoming high/low windows
  • Apply the Rule of 12ths to estimate intermediate heights
  • Match fishing windows to solunar major periods for best results

The table below consolidates key tidal parameters from multiple authoritative sources, giving you the official highs and lows alongside extremes and solunar data.

Key figures for Dunmore East tidal activity
Parameter Value Source
Next High Tide 09:45 ADMIRALTY EasyTide
Last Low Tide 3:18 PM IST tidetimes.org.uk
Location Waterford, Ireland TidesChart
Highest Sample Tide 4.29 m TidesChart
Lowest Sample Tide 0.48 m TidesChart
Solunar Peak May 26 96 very high Tides4Fishing
Water Temperature 7°C TidesChart Fishing
EasyTide PortID 0761 UKHO Admiralty

What time is high tide today in Dunmore East?

Today’s high tide in Dunmore East arrives at 09:45, with the previous low tide recorded at 3:18 PM IST. These times are automatically adjusted for British Summer Time, and a full 7-day tide chart is available from ADMIRALTY EasyTide for anyone planning further ahead.

Current tide times

On April 1, the first high tide of the day hit 4.1 m at 5:50 in the morning, with a second high of 3.6 m at 18:19. The intervening low tide dropped to 0.5 m at 12:14, giving a tidal range of 3.6 m in between those two peaks.

Tide Source

These times come from UKHO Admiralty EasyTide (official UK hydrographic office), which serves as the authoritative source for UK and Irish maritime tide predictions.

Next high tide prediction

Based on April 2 data, the next high tides were 4.0 m at 6:25 and 3.6 m at 18:49, with lows at 0:32 (0.7 m) and 12:46 (0.6 m). The pattern shows semi-diurnal tides — two highs and two lows every lunar day — which is standard for this part of the Irish coast.

Tide chart overview

The tide chart displays heights in metres alongside times in 24-hour format. On any given day you can expect a high of 3.5–4.2 m and a low of 0.5–1.0 m. The highest predicted tide reaches 4.29 m at around 6:05, while the lowest can drop to 0.48 m at mid-day on extreme low-water days.

Why this matters

Boaters launching from Dunmore East harbour need at least 2 hours of rising tide to clear the shallowest approaches. Arriving at high tide opens up the most launch points; arriving at low tide can leave you dragging gear across exposed rocks.

Upsides

  • Two high tides daily maximise fishing and boating windows
  • Large tidal range (3–4 m) creates strong current that concentrates baitfish
  • Official predictions available 7 days ahead from UKHO Admiralty

Downsides

  • Low tide exposes mudflats that can trap unwary kayakers
  • Rapid tidal flow requires careful timing near harbour entrance
  • Some launch sites unusable at tides below 1.0 m

What is the rule of 12 in tides?

The Rule of 12ths is a shortcut that lets you estimate water depth at any point between high and low tide without a chart in front of you. Instead of assuming a linear rise or fall, it divides the total tidal range into 12 equal parts spread across the 6-hour flood or ebb period.

How the rule works

The logic is simple: tides don’t rise or fall at a constant rate. The water moves slowest right at the turn (high or low water) and fastest in the middle of the cycle. The Rule of 12ths accounts for this by assigning fractions of the total range to each hour.

  • Hour 1: 1/12 of the total tidal range
  • Hour 2: 2/12 of the total tidal range
  • Hours 3 and 4: 3/12 each (the fastest-moving middle hours)
  • Hour 5: 2/12
  • Hour 6: 1/12

All that is required for the ‘Rule of Twelfths’ is to know the time and height of either high or low water together and the range for that tide.

— eOceanic sailing navigation resource

The upshot

If your harbour has a tidal range of 4.0 m and you arrive 2 hours before high water, you have already gained 3/12 of the total range — roughly 1.0 m of depth above the low-water mark. The water is rising fast, so decisions about departure need to account for that momentum.

Application to Dunmore East

Take a practical example: on April 1, high tide was 4.1 m and low tide was 0.5 m, giving a range of 3.6 m. One hour after low water (at roughly 13:14), the water has risen by 0.3 m, reaching about 0.8 m above the chart datum. Three hours after low water (around 15:14), you have gained 1.8 m — meaning the water sits at roughly 2.3 m, already deep enough for most small craft.

Tide flow calculation

The Rule of 12ths works symmetrically for both rising and falling tides. During the first hour after high tide, the water drops by 1/12 of the range. During the fastest middle hours (3 and 4), it drops by 3/12 each. It is important to be able to calculate the depth of water at any given tide when you are travelling outside marked channels, notes a tides education channel on YouTube.

Bottom line: Anglers anchoring offshore should recalculate depth every 30 minutes during hours 3 and 4 to avoid grounding, since mid-cycle water depth changes by roughly 0.5 m per hour in the fastest windows.

What is the 50 90 rule for tides?

The 50/90 rule offers a rougher alternative to the Rule of 12ths, particularly popular among anglers who want a mental shortcut without doing arithmetic on the water. The name comes from the percentages of tidal range covered in the first three hours.

50/90 rule breakdown

According to charts published by TidesChart, the first hour after a tide turn sees roughly 10% of the total range change. The next two hours together cover about 40% more. By the end of the third hour, you have covered approximately half the total tidal movement.

  • First hour: 1/10 of total range (10%)
  • Hours 2 and 3 together: 2/10 each (40% combined)
  • Hours 4, 5, 6: remaining 50% — slower as the tide tails off

Thirds and twelfths rules

The Rule of Thirds (sometimes called the 1/3 rule) simplifies further: the first 3 hours of a tide cycle cover about half the range; the last 3 hours cover the other half. For quick decisions on a boat, that mental model is close enough to the 50/90 split to be useful.

50 90 100 variation

A more conservative version of the rule — sometimes called the 50/90/100 rule — adds a third check: by 90 minutes into the flood or ebb, you should be at roughly 50% of the range. By three hours, you should be near 90%. The final 10% comes in the last hour as the tide slows to its turn.

The catch

Both rules are approximations. Actual tidal velocity depends on local geography, wind, and freshwater outflow from the River Waterford. In Dunmore East’s harbour channel, the run can be noticeably faster than the rules predict, so build in a safety margin of 15–20 minutes when planning harbour transits.

How long does the tide stay high before it turns?

The tide does not stay high for long. High water is a momentary peak — the water pauses for a few minutes, then begins to fall. The period when tidal flow essentially stops is called slack water, and it typically lasts 20–30 minutes in coastal areas like Dunmore East.

High tide duration

High tide at a given location lasts only as long as it takes for the tidal flow to reverse direction. In Dunmore East, with its semi-diurnal pattern, there are two high waters roughly every 12 hours and 25 minutes (one lunar day). Each high-water peak is brief — minutes, not hours.

Slack water period

Slack water is the window when the current reverses and water movement slows to near-zero. For small-boat anglers, this is a mixed blessing: calm water makes casting easier, but it also means baitfish stop being pushed by the flow and can become harder to locate.

Lunar day frequency

Because the moon rises about 50 minutes later each day, the timing of high and low waters shifts accordingly. Today’s 09:45 high tide will be roughly 50 minutes later tomorrow. Over a week, that shift accumulates to nearly 6 hours — which is why checking a daily chart is essential rather than memorizing yesterday’s times.

Bottom line: For fishing, the best action often comes in the hour before and after slack water, when current begins pushing baitfish back into the current lines — slack water in Dunmore East lasts roughly 20–30 minutes around each high or low peak.

What tide is best for fishing?

Experienced anglers in Dunmore East consistently point to moving tides — either the first hour of flood or the last hour of ebb — as the most productive windows. The water movement stirs up bottom sediment, brings baitfish closer to the surface, and triggers predatory fish to feed aggressively.

Incoming vs outgoing tide

Both incoming and outgoing tides have advantages. An incoming tide pushes warm, oxygen-rich water over rocky ground and often triggers feeding as fish sense the rising water. An outgoing tide pulls baitfish off the flats and concentrates them in channels and drop-offs, making them easier to target.

From LA Blue Water Charter

Tides affect fishing patterns in ways that are immediately observable: baitfish move with the current, and predatory species position themselves at current edges waiting for an easy meal. Understanding this current-bait-predator chain is the foundation of successful tide-based fishing.

High tide fishing tips

High tide opens access to areas that are otherwise dry — flooded salt marsh, rocky shelves, and weed beds. At Dunmore East, fishing near the harbour walls during high water gives access to deeper water immediately adjacent to structure, which is where predatory fish tend to hold.

Dunmore East specifics

Best fishing times align with major solunar periods: lunar transit (when the moon is directly overhead) and lunar opposition (when it is directly below). On a sample day, major fishing windows ran from 1:03–3:03 (moon down) and 1:33–3:33 (moon up), according to TidesChart Fishing.

  • Water temperature around 7°C during early fishing season
  • Peak solunar activity reaches 96 (very high) in late May
  • Moon phases with waxing gibbous and full moon correlate with higher activity
The trade-off

High solunar ratings don’t guarantee fish. The trade-off for Dunmore East anglers is that the best fishing windows often coincide with early morning high tides — which means cold starts, pre-dawn gear checks, and the possibility of rough conditions if a weather front moves through overnight.

Best fishing times in Dunmore East align with major solunar periods like lunar transit and opposition, when tidal movement and lunar position combine to concentrate baitfish.

— TidesChart Fishing service

Related reading: Playa Feliz Gran Canaria Reviews · MSC Last Minute Cruises

Additional sources

seatemperature.info, tideking.com, eoceanic.com

For nearby Irish coastal spots, NOAA high tide predictions align closely with Dunmore East patterns, aiding safe boating and fishing plans today.

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Frequently asked questions

What causes tides in Dunmore East?

Tides in Dunmore East are primarily driven by the gravitational pull of the moon, with a secondary influence from the sun. The village sits on Ireland’s south coast where the Atlantic tidal surge funnels into Waterford Harbour, producing semi-diurnal tides with two highs and two lows every lunar day.

Is high tide safe for swimming?

High tide is generally safer for swimming because it covers rocks, shallow shelves, and strong current channels that are exposed at low water. However, the strong tidal flow in Dunmore East harbour means swimmers should always enter and exit at supervised areas and avoid the channel during peak current times.

How often do tides occur?

In Dunmore East, tides follow a semi-diurnal pattern with roughly two high tides and two low tides every 24 hours and 50 minutes (one lunar day). The timing shifts about 50 minutes later each day as the moon’s position changes.

What is slack tide?

Slack tide is the brief period when tidal current reverses direction and flow speed drops to near zero — typically 20–30 minutes around each high or low water peak. For fishing, slack water can be slow, but it signals that a new current direction is about to begin, which often triggers feeding activity.

Does weather affect Dunmore East tides?

Weather primarily affects tides through barometric pressure and wind. Low atmospheric pressure (approaching a storm) can amplify tide heights by several centimetres. Strong onshore winds can pile water against the coast, raising high-water levels, while offshore winds have the opposite effect.

Where to find tide maps for Dunmore East?

Official tide predictions come from UKHO Admiralty EasyTide (PortID 0761). Supplementary charts with fishing-specific overlays are available from Tides4Fishing and TidesChart.

Are tide times the same for Waterford?

Dunmore East and Waterford city share the same tidal system within Waterford Harbour, but slight timing differences occur due to the distance water must travel from the harbour mouth to the city quays. Dunmore East experiences high water slightly earlier. Anglers targeting both locations should use location-specific tide tables rather than assuming times are identical.

For anyone heading out from Dunmore East harbour, the practical implication is straightforward: check the 7-day chart before you leave, apply the Rule of 12ths if you’re heading offshore away from marked channels, and align your fishing windows with the next major solunar period. Anglers arriving at the wrong tide can find themselves stranded on mud, or worse, in fast-moving current with no safe landing point nearby. Getting the timing right is the single most effective safety measure you can take.