North coast beach
Treyarnon Bay: dogs, parking and water quality
Photograph to come Treyarnon Bay, Cornwall.50.526° N, 5.023° W
The essentials for Treyarnon Bay on Cornwall’s north coast: the council’s dog rules, the nearest council car parks and the Environment Agency’s water quality ratings, each linked to its source.
- Dogs
- Not on the council restriction listThe council’s rules in full
- Water quality 2025
- ExcellentEnvironment Agency rating
- Council parking
- None within 1.5 kmNearest: Porthcothan Bay, 2.0 km (1.2 miles) away
- Lifeguards
- Check the RNLI finderSeason mainly May to September, varies by beach (Cornwall Council)
- Nearest station
- Newquay station13.0 km (8.1 miles) in a straight line · by train
- Nearest town
- Padstow6.1 km (3.8 miles) away
Dogs on Treyarnon Bay
Treyarnon Bay does not appear on Cornwall Council’s dogs-on-beaches restriction list (council page last updated 23 October 2026, checked by us on 1 November 2026).
That is not a guarantee that dogs are welcome on every part of the beach. The council notes that other, privately owned beaches may set their own local restrictions, so check the signs when you arrive. Cornwall’s other dog orders, such as picking up after your dog, still apply.
Parking near Treyarnon Bay
We found no Cornwall Council car park within 1.5 km of Treyarnon Bay. The nearest one in the council’s list is Porthcothan Bay (PL28 8LW), about 2.0 km (1.2 miles) away in a straight line.
Parking near many Cornish beaches is run by the National Trust, parish councils or private owners. We have not checked those yet, so they are not listed. Charges change, so we do not quote prices: each council page has current tariffs. All Cornwall Council car parks.
Water quality at Treyarnon Bay
The Environment Agency rated Treyarnon Bay Excellent in its 2025 classification. Ratings for the last four years:
| Bathing water | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|
| Treyarnon Bay | Excellent | Excellent | Excellent | Excellent |
The 2026 bathing season ran from 15 May 2026 to 30 September 2026, with 20 samples planned at Treyarnon Bay.
- Treyarnon Bay: no daily pollution risk forecasts are made here. The EA says a warning would still be issued if a pollution incident happened.
Streams and run-off at Treyarnon Bay (EA profile)
Streams and rivers are typically affected by human sewage, animal slurry and runoff from roads. The Treyarnon Stream flows onto this beach. The Environment Agency have periodically monitored the stream and found that water quality is temporarily worse after heavy rainfall.
Seaweed at Treyarnon Bay (EA profile)
For the four year (2022-2025) assessment period where data is available, seaweed (macroalgae) was assessed as being sufficient to be objectionable for 2% of visits, with 82% of visits noting the presence of seaweed (macroalgae). This bathing water does not have a history of large amounts of seaweed (macro algae).
Source: Environment Agency bathing water profile, Open Government Licence v3.0. See every Cornish bathing water rating.
About Treyarnon Bay
The Environment Agency describes the bathing water like this:
Treyarnon Bay is on the north coast of Cornwall. It is a rural sheltered sandy bay approximately 200 metres wide, backed by sand dunes and cliffs. A stream flows across the beach towards the sea, spreading out over the sand at low tide. There are also rock pools to explore.
Quoted from the Environment Agency bathing water profile, Open Government Licence v3.0. Beach material recorded by the EA: rock, sand. Designated as a bathing water in 1988.
Safety and tides
Whether a lifeguard is on duty depends on the beach and the date. Cornwall Council says the RNLI’s main lifeguard season runs from May to September and varies from beach to beach, so check the RNLI’s lifeguarded beach finder before you go. We do not list lifeguard dates until we can check them.
The council points visitors to BBC tide tables for tide times. In an emergency at the coast, call 999 and ask for the Coastguard (HM Coastguard). More in our beach safety guide.
Getting to Treyarnon Bay by train
The nearest National Rail station to the Environment Agency’s sampling point for Treyarnon Bay is Newquay, about 13.0 km (8.1 miles) away in a straight line. You would need a bus, taxi, bike or a long walk from there. The three nearest stations:
| Station | Distance (straight line) |
|---|---|
| Newquay station | 13.0 km (8.1 miles) |
| Quintrell Downs station | 13.6 km (8.4 miles) |
| St Columb Road station | 15.3 km (9.5 miles) |
Straight-line distance, our own calculation from OpenStreetMap station locations (© OpenStreetMap contributors, ODbL). It is not a walking or road route. Station links go to National Rail for times and facilities. See beaches near a railway station.
Where is Treyarnon Bay?
Nearby beaches
- Constantine Bay790 m (0.5 miles) away · Not on the council restriction list · water Excellent
- Booby's Bay1.5 km (0.9 miles) away · Not on the council restriction list · water Excellent
- Porthcothan1.9 km (1.2 miles) away · Not on the council restriction list · water Excellent
- Mother Ivey's Bay2.1 km (1.3 miles) away · Not on the council restriction list · water Excellent
Photos
Quick answers
Are dogs allowed on Treyarnon Bay?
Treyarnon Bay is not on Cornwall Council’s dogs-on-beaches restriction list (checked 1 November 2026). Privately owned beaches can set their own rules, so check signs.
Is the water clean at Treyarnon Bay?
The Environment Agency rated Treyarnon Bay Excellent in 2025. During the bathing season (15 May 2026 to 30 September 2026 in 2026) it publishes sample results online.
Where can I park for Treyarnon Bay?
We found no Cornwall Council car park within 1.5 km. The nearest is Porthcothan Bay, about 2.0 km (1.2 miles) away. Other parking may be run by the National Trust or private owners.
What is the nearest railway station to Treyarnon Bay?
The nearest National Rail station is Newquay, about 13.0 km (8.1 miles) away in a straight line (our calculation from OpenStreetMap data).
Sources and checks
- Cornwall Council: dogs on beaches – page last updated 23 October 2026, checked 1 November 2026
- Environment Agency: Treyarnon Bay bathing water profile – checked 1 November 2026, Open Government Licence v3.0
- Cornwall Council car park: Porthcothan Bay – page last updated 10 July 2026
- Cornwall Council: beach safety – page last updated 1 April 2026
- OpenStreetMap: railway station locations – ODbL; distances are our own calculation
Last checked: . Published by Oaknest Media. How we check: editorial policy.