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Polurrian Cove

Cornwall, South West
Excellent Water Quality
Data last verified: 12 Nov 2026

Polurrian Cove, a picturesque cove in Cornwall, boasts a dramatic shoreline of rock and sand, surrounded by towering cliffs and lush greenery. The crystal-clear waters, rated Excellent by the Environment Agency, are perfect for swimming and snorkelling. During the summer months, the water temperature typically reaches around 18°C, making it an ideal spot for a refreshing dip.

10.9°C
Air Temp
20.9 mph
Wind Speed
High Tide (4.98m)
in 5h 27m (06:21) • Spring Tide
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Live Water Quality

95
Excellent
Safe for swimming
• Updated 10 mins ago
Today's Conditions • Updated 10 mins ago

Lifeguards

Unknown
Help us verify

Air Temp

10.9°C
Comfortable

Weather

Partly cloudy
10.9°C

Tide

High Tide (4.98m)
in 5h 27m (06:21) • Spring Tide

Water Quality

Excellent
Safe for swimming

Pollution Alerts

None
No alerts today

Quick Overview

Sand & Rocky beach
Family friendly
Dog friendly
(winter)
Parking nearby
Toilets
Café

Beach Information View all details

Beach Type
Rock, Sand
Water Quality
Excellent
Avg. Air Temp
10.9°C
Swimming
Highly recommended

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Reference Information

🌊 Live Tide Curve, Tidal Range & 7-Day Schedule

Harmonic astronomical predictions, tidal coefficients & flow rate

Spring Tide • Coeff 87
Current Water Level
Low Tide (Slack) • (1.11m)
4% through current tide cycle (LAT)
Upcoming High & Low
▲ High: 06:21 (4.98m • in 5h 27m)
▼ Low: 12:58 (1.14m • in 12h 5m)
Tidal Range & Coefficient
Range: 3.89m (Coeff 87/120)
Large tidal range — faster tidal currents and higher high water.
Current Tidal Flow
Slack Water (Calmest)
Rule of Twelfths: fastest flow occurs in mid-tide hours 3 & 4.
📈 24-Hour Harmonic Tide Curve (LAT)
Station: Falmouth
5.6m 3.1m 0.6m 23:0003:0007:0011:0015:0019:00 High 06:21 (5.0m)Low 12:58 (1.1m)High 18:35 (4.7m) NOW
📅 7-Day High & Low Tide Table
Day High & Low Tides (Local Time) Tidal Range Coeff / Phase
Wed 11 Nov ▲ High 18:05 (4.87m) --
Today ▼ Low 00:39 (1.09m)▲ High 06:21 (4.98m)▼ Low 12:58 (1.14m)▲ High 18:35 (4.71m) 3.89m Spring (87)
Fri 13 Nov ▼ Low 01:09 (1.29m)▲ High 06:51 (4.85m)▼ Low 13:29 (1.34m)▲ High 19:06 (4.53m) 3.56m Coeff 79
Sat 14 Nov ▼ Low 01:38 (1.48m)▲ High 07:23 (4.70m)▼ Low 14:02 (1.54m)▲ High 19:41 (4.36m) 3.22m Coeff 70
Sun 15 Nov ▼ Low 02:10 (1.68m)▲ High 08:02 (4.54m)▼ Low 14:38 (1.73m)▲ High 20:24 (4.20m) 2.86m Coeff 61
Mon 16 Nov ▼ Low 02:48 (1.87m)▲ High 08:49 (4.38m)▼ Low 15:21 (1.91m)▲ High 21:20 (4.06m) 2.51m Coeff 52
Tue 17 Nov ▼ Low 03:35 (2.04m)▲ High 09:49 (4.26m)▼ Low 16:18 (2.03m)▲ High 22:29 (3.98m) 2.23m Neap (45)
Reference Station: Falmouth • Model: FES2022 Global Ocean Model • Datum: LAT Tide predictions via TidesAtlas
Next 4 Tides
Spring Tide
High 06:21 4.98m
Low 12:58 1.14m
High 18:35 4.71m
Low 01:09 1.29m
Current: Low Tide (Slack) (1.11m) • Slack Water (Calmest)
Sediment Type
Rock, Sand

The shoreline consists primarily of rock, sand. Sediment type dictates underfoot comfort, wave energy absorption, and the water's clarity when currents stir up the seabed.

Annual Rating
Excellent

Water quality is classified as excellent, meeting the highest cleanliness standards. Bacterial counts (E. coli & Intestinal Enterococci) are consistently low, posing negligible health risks.

Rainfall Impact
Low Risk

This bathing water is generally resilient and has a low risk of quality degradation after heavy summer storm events.

Monitoring Authority
Environment Agency

Tested weekly by the Environment Agency England for bacteria levels (E. coli & Intestinal Enterococci) between May and September.

Water Body Type
Coastal Beach

Monitored as a coastal beach. Coastal beaches are subject to tidal flows and marine dilution, whereas inland lakes/rivers suffer from low water circulation, meaning bacteria can linger longer.

Sewerage Provider
South West Water Limited

South West Water Limited is the regional utility responsible for waste water treatment, sewage infrastructure, and storm overflow management in this catchment area.

Designated Year
1988

Officially designated as a protected bathing water site in 1988. This designation mandates regular public health monitoring.

County / District
Cornwall

Governed under local district sanitation and environmental safety regulations in the Cornwall area.

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