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Swansea Bay

Swansea, Wales
Good Water Quality
Data last verified: 12 Nov 2026

Swansea Bay boasts a picturesque shoreline with a mix of mud and shingle shores, set against the stunning backdrop of the Gower Peninsula. Visitors can enjoy excellent water quality, with an annual rating of Good, as tested by Natural Resources Wales. During the summer months, the water temperature typically ranges from 14°C to 16°C, perfect for swimming and water activities.

6.7°C
Air Temp
14 mph
Wind Speed
Low Tide (1.59m)
in 23m (01:17) • Spring Tide
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Live Water Quality

80
Good
Safe for swimming
• Updated 10 mins ago
Today's Conditions • Updated 10 mins ago

Lifeguards

Unknown
Help us verify

Air Temp

6.7°C
Comfortable

Weather

Clear sky
6.7°C

Tide

Low Tide (1.59m)
in 23m (01:17) • Spring Tide

Water Quality

Good
Safe for swimming

Pollution Alerts

None
No alerts today

Quick Overview

Mud & Shingle beach
Family friendly
Dog friendly
(winter)
Parking nearby
Toilets
Café

Beach Information View all details

Beach Type
Mud, Shingle
Water Quality
Good
Avg. Air Temp
6.7°C
Swimming
Highly recommended

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The Secret Beach Bar & Kitchen
british restaurant
4.8 • 120m away
Surfside Cafe - Rotherslade Bay
cafe
4.8 • 120m away
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Crafty Smuggler Coffee Roastery & Cafe
coffee shop
4.8 • 120m away
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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) • (1.66m)
94% through current tide cycle (LAT)
Upcoming High & Low
▲ High: 07:32 (8.74m • in 6h 38m)
▼ Low: 01:17 (1.59m • in 23m)
Tidal Range & Coefficient
Range: 7.15m (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: Swansea
9.9m 5.3m 0.7m 23:0003:0007:0011:0015:0019:00 Low 01:17 (1.6m)High 07:32 (8.7m)Low 13:35 (1.7m)High 19:49 (8.4m) NOW
📅 7-Day High & Low Tide Table
Day High & Low Tides (Local Time) Tidal Range Coeff / Phase
Wed 11 Nov ▼ Low 13:05 (1.42m)▲ High 19:17 (8.73m) 7.31m Spring (89)
Today ▼ Low 01:17 (1.59m)▲ High 07:32 (8.74m)▼ Low 13:35 (1.68m)▲ High 19:49 (8.42m) 7.15m Spring (87)
Fri 13 Nov ▼ Low 01:46 (1.86m)▲ High 08:04 (8.46m)▼ Low 14:06 (1.99m)▲ High 20:21 (8.08m) 6.60m Coeff 79
Sat 14 Nov ▼ Low 02:18 (2.17m)▲ High 08:38 (8.13m)▼ Low 14:41 (2.33m)▲ High 20:56 (7.71m) 5.96m Coeff 70
Sun 15 Nov ▼ Low 02:54 (2.51m)▲ High 09:15 (7.77m)▼ Low 15:21 (2.67m)▲ High 21:37 (7.34m) 5.26m Coeff 60
Mon 16 Nov ▼ Low 03:38 (2.85m)▲ High 10:00 (7.42m)▼ Low 16:11 (3.00m)▲ High 22:27 (7.01m) 4.57m Coeff 51
Tue 17 Nov ▼ Low 04:33 (3.16m)▲ High 10:56 (7.12m)▼ Low 17:15 (3.22m)▲ High 23:31 (6.79m) 3.96m Neap (42)
Reference Station: Swansea • Model: FES2022 Global Ocean Model • Datum: LAT Tide predictions via TidesAtlas
Next 4 Tides
Spring Tide
Low 01:17 1.59m
High 07:32 8.74m
Low 13:35 1.68m
High 19:49 8.42m
Current: Low Tide (Slack) (1.66m) • Slack Water (Calmest)
Sediment Type
Mud, Shingle

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

Annual Rating
Good

Water quality is clean and fully compliant with safety directives. It regularly meets bacterial limits under standard environmental conditions.

Rainfall Impact
High Risk

Bacterial levels are highly susceptible to storm runoff. Heavy rainfall in the local catchment is likely to trigger storm overflows and agricultural runoff, rendering the water temporarily unsafe.

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
Estuary / Transitional Water

Monitored as a transitional or estuarine bathing water. Estuarine sites experience a mix of tidal ocean flushing and river discharge, causing fluctuating salinity and water quality.

Sewerage Provider
Unknown

Unknown 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
Swansea

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

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