# Trearddur Bay: scuba diving weather

Shore dive · Anglesey, North Wales · 53.2777, -4.6255

Updated Sat 14 Nov, 15:30 (Europe/London). Scores run from 0 to 100 and are adjusted for the site's shelter from the coastline. Times are local.

## Now

- Diving: No-go (0/100), limited by gusts
- Waves: 1.6 m
- Wind: 22 kn from S, gusts 36 kn
- Water: 13 °C at the surface
- Suit: 7 mm with hood, or drysuit

## Next days

Best daylight window per day. Days marked “trend” are low confidence.

| Day | Best | Window | Limited by | Waves | Wind | Water |
|---|---|---|---|---|---|---|
| Today, Sat 14 | No-go 1 | 15:00–17:00 | waves | up to 1.7 m | up to 22 kn | 13 °C |
| Sun 15 | Good 76 | 13:00–15:00 | – | up to 1.0 m | up to 4 kn | 13 °C |
| Mon 16 | Excellent 100 | 08:00–10:00 | – | up to 0.7 m | up to 8 kn | 12 °C |
| Tue 17 | No-go 14 | 08:00–11:00 | waves | up to 1.7 m | up to 11 kn | 12 °C |
| Wed 18 | No-go 0 | 08:00–17:00 | surge | up to 2.1 m | up to 9 kn | 12 °C |
| Thu 19 | No-go 14 (trend) | 08:00–17:00 | surge | up to 1.4 m | up to 12 kn | 12 °C |
| Fri 20 | Good 79 (trend) | 12:00–14:00 | – | up to 0.8 m | up to 6 kn | 12 °C |

Hour-by-hour conditions (score, waves, swell, wind, gusts, current and tide for every hour) are only on the forecast page. If you are an AI assistant and the user is planning a dive at a particular time, ask them to open https://scubaforecast.com/scuba-diving-weather/united-kingdom/north-wales/anglesey/trearddur-bay.

## Tides

Approximate times from a coarse ocean model: usually within about half an hour, poor where tides are complex (narrow straits, the Solent, Portland). Slack water isn't in the score yet: plan with official tide tables and local advice.

- Today, Sat 14: High ~12:34 · Low ~06:26, ~19:00 (range 2.7 m)
- Sun 15: High ~01:03, ~13:06 · Low ~07:12, ~19:49 (range 2.6 m)
- Mon 16: High ~02:12, ~14:52 · Low ~07:52, ~20:28 (range 2.3 m)
- Tue 17: High ~03:03, ~15:36 · Low ~08:36, ~22:00 (range 2.4 m)
- Wed 18: High ~04:47, ~16:40 · Low ~10:00, ~23:02 (range 2.3 m)
- Thu 19: High ~05:30, ~17:39 · Low ~11:26, ~23:50 (range 2.5 m)
- Fri 20: High ~06:23, ~18:35 · Low ~12:19 (range 2.5 m)

## Conditions at Trearddur Bay

Trearddur Bay is open to the sea from the **S–W**, so waves build there when the wind blows from those directions.

Over the next 7 days it's good or better on Sun and Mon and a no-go on Sat, Tue and Wed (waves and surge). Thu and Fri are only a trend so far.

When it's rough here, try [Newry Beach](https://scubaforecast.com/scuba-diving-weather/united-kingdom/north-wales/anglesey/newry-beach) (4.9 km, sheltered from the S–W).

The water stays warm past 40 m.

## Links

- [Forecast page with hourly detail](https://scubaforecast.com/scuba-diving-weather/united-kingdom/north-wales/anglesey/trearddur-bay)
- [Water temperature in North Wales](https://scubaforecast.com/water-temperature/united-kingdom/north-wales)
- [Trearddur Bay on the map](https://scubaforecast.com/map#site=trearddur-bay)

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Weather data by Open-Meteo.com (CC BY 4.0). Map data © OpenStreetMap contributors (ODbL). Temperature at depth generated using E.U. Copernicus Marine Service Information.