Icy.ie

Dun Laoghaire Baths

Co. Dublin, Dun Laoghaire Rathdown County Council. Sea bathing water.

Annual class 2025: Poor Latest sample 14 September 2026 Lifeguard listed (seasonal)

Icy.ie is a data aggregator, not a safety assessment.

EPA alert details

Short-term pollution risk. The EPA lists this water as prone to short-term pollution, for example after heavy rain. Wait at least 48 hours after heavy rain. Icy.ie does not check rainfall.

Before you go in

  • Water qualityLast sample 14 September 2026, rated Excellent.
  • Water temperatureNo nearby sensor within 25 km. Assume it is cold: cold water shock can occur below 15°C.
  • LifeguardsLifeguard listed (seasonal, check hours): This bathing area is lifeguarded every day in June (as resources permit), July and August, and the first two weekends of September..
  • DaylightSunrise 07:57, sunset 18:24 today. It is dark or close to dark now.
  • TideModelled as falling, low water about 23:30. Confirm with local tide tables.
  • Waves and wind0.4 m waves (offshore buoy, 51 km away); 9 knot wind from NE (38°) (offshore buoy, 51 km away). Conditions at the beach can be very different.

Read before you swim: cold water safety checklist, cold water shock and Float to Live, bathing water quality, tides and currents, jellyfish and stings.

Latest water quality sample

Excellent

Sampled 14 September 2026 (34 days ago)

E. coli
<10 per 100 ml
Intestinal enterococci
2 per 100 ml

Routine monitoring runs from 22 May to 15 September. There is no routine testing in winter, so a sample can be months old. A sample shows one moment, and conditions can change quickly after rain.

Icy.ie checked 18 Oct, 21:49. Sample date 14 September 2026. Source: EPA.

Tide at the beach

Falling

Modelled height now -0.3 m at 21:50

Next high water
06:30 tomorrow, 0.5 m
Next low water
23:30, -0.6 m

Next 24 hours

  1. Low23:30-0.6 m
  2. High06:300.5 m, tomorrow
  3. Low11:50-0.5 m, tomorrow
  4. High18:300.7 m, tomorrow
Next 24 hours. The dot marks the model's reading for now.

Times are Irish local time. These are modelled predictions at the nearest model point, 0.9 km from the beach. They are not a substitute for local tide tables, and do not include weather effects such as surge and wind. Heights are relative to the model's mean level, not chart datum. See tides and currents.

Icy.ie checked 18 Oct, 21:49. Source: Marine Institute model.

Sea temperature

No nearby sensor

No Marine Institute sensor is within 25 km, so we do not give a headline figure that would not describe this beach.

Offshore buoy, 51 km away, can be several degrees different from the beach: 14.6°C, read 18 Oct, 21:00 (50 min ago) (M2 weather buoy, Irish Sea).

Water near the shore, in shallow bays and in estuaries can be several degrees colder or warmer than a sensor offshore. More at Irish sea temperature today.

Icy.ie checked 18 Oct, 21:49. Source: Marine Institute.

Waves and wind

Wave height
0.4 m
Wave source
Offshore buoy, M2 weather buoy, Irish Sea, 51 km away, 18 Oct, 21:00 (50 min ago)
Wind speed
9 knots
Wind direction
From NE (38°)
Gusts
11 knots
Air temperature
11.9°C
Wind source
Offshore buoy, M2 weather buoy, Irish Sea, 51 km away, 18 Oct, 21:00 (50 min ago)

Offshore sensors differ from your beach. Waves and wind at a buoy far out can be stronger or weaker than at the shore, and a beach sheltered from one direction may be exposed to another.

Icy.ie checked 18 Oct, 21:49. Wind reading 18 Oct, 21:00. Source: Marine Institute.

Daylight today

After sunset

First light (civil twilight)
07:21
Sunrise
07:57
Sunset
18:24
Last light (civil twilight)
18:59

Plan to be out of the water before sunset. Read dawn, dusk and night swimming safety.

Calculated by Icy.ie for this beach's position. Irish local time. No data feed is used.

Not checked by Icy.ie

These matter for your safety and are not in our data. Check them yourself before you go in.

Facilities

Blue Flag
No
Green Coast
No
Toilets
YesPublic toilets are available in the Peoples Park
First aid
YesAn AED is available on the wall of the Pavilion building
Lifebuoy
YesThere are 3 ring buoys located within the bathing area. One at the end of the pier, one at the bottom of the South steps and one on the wall beside the changing shelter
Lifeguard
ListedSeasonal, check hours. This bathing area is lifeguarded every day in June (as resources permit), July and August, and the first two weekends of September.
Parking
YesPublic parking is available in Windsor Terrace carpark
Dogs
On a lead
Accessible
YesThere is ramped access from Queens Road onto the bathing area platform
Beach wheelchair
No

Icy.ie checked 18 Oct, 21:49. EPA record last updated 8 April 2026.

Water quality class by year

YearAnnual class
2025Poor

Dun Laoghaire Baths is classified as having Poor Water Quality in 2025 based on the assessment of bacteriological results for the period 2025 and consequently, an Advice Not To Swim restriction will apply at the bathing water for the 2026 bathing season. Dun Laoghaire Baths was newly identified in 2025 as a beach for monitoring, management and assessment under the requirements of the 2008 Bathing Water Quality Regulations. Annual water quality ratings are generally calculated using monitoring results over a four-year period and are assessed against stringent bacterial limits to protect bather health. The resulting poor classification is based on 2 poor and 14 excellent samples from the monitoring calendar for 2025 only. The 1st poor sample (7/7/25), Dlr have not been able to source the cause of this event to date, but it was not as a result of an overflow. Dlr have had a PCR test conducted to try to identify the microbial source of the poor sample. The test results were inconclusive as all sources were below level of quantification. The 2nd poor sample (21/7/25), was as a result of significant unexpected rainfall, 48mm in a single day which was a Sunday evening, causing an overflow from a combined sewer line. Dlr are working with UÉ to try to find a short term solution to reduce the frequency and volume from this overflow, provide more accurate and real time data on overflows. As well as looking at a long-term solution to remove the overflow from the current location. Dlr are committed to maintaining the classification of the DLB at a complainant level, and will form a plan to rectify the situation caused by the strict interpretation and exclusion of valid testing, that has resulted in the poor classification.

An annual class summarises four years of testing. It does not describe the water today.

Icy.ie checked 18 Oct, 21:49. EPA record last updated 8 April 2026.

About this water

The Dún Laoghaire Baths re-opened in December 2022 after significant redevelopment of the facility. The works included the refurbishment of the baths pavilion, the construction of a new 35m jetty with built in seating, the installation of the Roger Casement statue, a simple changing shelter, the refurbished Edwardian gazebo and a new walkway from Newtownsmith. Access to the water is via two sets of steps. One from the main lower platform and one from the jetty. Both sets of steps lead swimmers into the Bathing Area. The Bathing Area has two yellow marker buoys installed for swimmer safety. These buoys alert watercraft users that swimmers will be present between these buoys and the shore. (Dun Laoghaire Bath Photographs used are credited to Ste Murray).

Profile for Dun Laoghaire Baths for 2026

Icy.ie checked 18 Oct, 21:49. EPA record last updated 8 April 2026.

Where the data comes from

Bathing water details, classifications, samples and alerts: Environmental Protection Agency (Ireland), published under the Creative Commons Attribution 4.0 licence (EPA bathing water API).

Modelled tide, inshore and offshore buoy readings: Marine Institute (Ireland), published under the Creative Commons Attribution 4.0 licence via ERDDAP. Readings are provisional and can be missing or delayed. Icy.ie refreshes this page about every 10 minutes.

Sunrise, sunset and twilight are calculated by Icy.ie from the beach position.

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