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Aberdyfi

Gwynedd, Wales
Excellent Water Quality
Data last verified: 27 Sep 2026

Nestled in the heart of Gwynedd, Aberdyfi boasts a picturesque estuary shoreline with soft sand beaches, perfect for a relaxing summer escape. The official water quality rating, tested by Natural Resources Wales, is an impressive 'Excellent', making it an ideal spot for swimming and water activities. During the peak summer months, the water temperature typically ranges from 15°C to 18°C, offering a refreshing respite from the sun.

14.9°C
Air Temp
15.5 mph
Wind Speed
High Tide
in 2h 50m
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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

14.9°C
Comfortable

Weather

Partly cloudy
14.9°C

Tide

High Tide
in 2h 50m

Water Quality

Excellent
Safe for swimming

Pollution Alerts

None
No alerts today

Quick Overview

Sandy beach
Family friendly
Dog friendly
(winter)
Parking nearby
Toilets
Café

Beach Information View all details

Beach Type
Sand
Water Quality
Excellent
Avg. Air Temp
14.9°C
Swimming
Highly recommended

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Nearby Businesses View all

Coast Deli and Dining
coffee shop
4.8 • 120m away
Bear of Amsterdam Cafe
cafe
4.8 • 120m away
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Reference Information

Full Tide Times
Low 16:04 -1.9m
High 21:28 2.7m
Low 04:31 -2.1m
High 09:47 2.4m
Sediment Type
Sand

The shoreline consists primarily of 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
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
1990

Officially designated as a protected bathing water site in 1990. This designation mandates regular public health monitoring.

County / District
Gwynedd

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

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