Portrane, the Brook Beach
Good to go
No current pollution alerts — always assess conditions yourself.
Checked against the Environmental Protection Agency (Ireland) · data last changed 2 months ago.
Sea conditions
Water temperature
13.9°C
Chilly — most swimmers want a wetsuit
Wave height
0.8 m
Significant wave height offshore; inshore conditions vary.
Tide
Coming in
- High water around UTC
- Low water around UTC
Modelled values, not measurements — coastal water often differs from the open-sea model, and tide times are approximate to within about half an hour. Use official tide tables for anything that depends on precise timing.
About this spot
Portrane the Brook Beach is a gently sloping sandy beach, on the seaward side of the Portrane Peninsula. Brook beach expands north to become the Burrow beach where sandy dunes are located. There are strong currents located on the north end of the beach.
This spot’s record
Portrane, the Brook Beach is in Dublin, about 14 km from Balbriggan. Portrane, the Brook Beach was rated Good in 2025 by the Environmental Protection Agency (Ireland). Its previous classifications were Sufficient in 2024, Good in 2023 and Excellent in 2022, so the rating here has moved rather than held. In the previous bathing season Portrane, the Brook Beach was under a short-term pollution restriction on 5 days. That is last season's record and not a forecast for today. Across the 12 most recent samples published by the Environmental Protection Agency (Ireland), E. coli counts ranged from 10 to 41 per 100 ml. The highest was taken on 2 September 2025. A classification is calculated from percentiles across four seasons, so no single reading decides how this water is rated.
Recent sample results
The last 12 bacterial samples published by the Environmental Protection Agency (Ireland), most recent on the right. Counts are per 100 ml of water.
Dashed line: 500 E. coli per 100 ml, the Bathing Water Directive guide value for coastal / transitional waters.
| Date | E. coli | Enterococci | Assessment |
|---|---|---|---|
| 7 Sept | 41 | 45 | Excellent |
| 24 Aug | 10 | 1 | Excellent |
| 10 Aug | 20 | 23 | Excellent |
| 27 Jul | 10 | 4 | Excellent |
| 13 Jul | 30 | 5 | Excellent |
| 29 Jun | 10 | 4 | Excellent |
A bathing water's official classification is calculated from percentiles across four bathing seasons, not from any single sample — so one high reading doesn't mean a spot is unsafe, and one low reading doesn't mean it's clean today.
Quality over the last 4 years
- Excellent2022
- Good2023
- Sufficient2024
- Good2025
This water has declined, from Excellent in 2022 to Good in 2025.
Facilities & access
- Lifeguard
- Yes11am to 7pm weekends only in June & full time July & August
- Parking
- Yes
- Toilets
- Yes
- Accessible entry
- No
- Dogs
- Yes
- Public transport
- YesBus Route
Official water quality
Classified Good in 2025.
Portrane, the Brook Beach is classified as achieving Good Water Quality in 2025, based on the assessment of bacteriological results for the period 2022 to 2024. Portrane, the Brook Beach achieved a Sufficient Water Quality rating in 2024, Good Water Quality rating in 2023, and Excellent Water Quality rating in 2022. 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.
Official bathing-water profileCommon questions
- Can you swim at Portrane, the Brook Beach right now?
- Portrane, the Brook Beach is currently marked "Good to go". No current pollution alerts — always assess conditions yourself. This reflects the latest data published by the Environmental Protection Agency (Ireland). Conditions change quickly — always assess the water yourself before entering.
- What is the water quality like at Portrane, the Brook Beach?
- the Environmental Protection Agency (Ireland) classified Portrane, the Brook Beach as Good in 2025. Classifications are a rolling assessment of bacterial samples taken over four bathing seasons, measured against E. coli and intestinal enterococci limits set by the EU Bathing Water Directive.
- Is there a swimming ban or warning at Portrane, the Brook Beach?
- There are no active bathing restrictions published by the Environmental Protection Agency (Ireland) for Portrane, the Brook Beach. That is not a guarantee of safety — assess conditions yourself.
- Is there a lifeguard at Portrane, the Brook Beach?
- Yes — Portrane, the Brook Beach has lifeguard cover. Hours: 11am to 7pm weekends only in June & full time July & August. Cover is seasonal; check locally before relying on it.
- What facilities are there at Portrane, the Brook Beach?
- Portrane, the Brook Beach has toilets, parking. Facility information is published by the Environmental Protection Agency (Ireland).
This spot is also in
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Nearby swimming spots
See all swimming spots near Balbriggan — about 14 km away.