Surfing in Rhosneigr: Surfers at Porth Cwyfan

Surfing in Rhosneigr

Sea and surf today

RhosneigrUpdated 00:05

Stormy. Stay out of the water today and take care on the beach.

Stormy
WAVES
3.7 mBig
7.8 s period
WIND
34 mphGusts 60
From the SSW · Onshore
TIDE
Falling
Low 03:35 · approx.
Official times on EasyTide
WATER
13.5°C
Sea temperature
4/3mm, boots advised
Showers at times
Very windy. Take care on the beach.
Later today
09:00Stormy
Big
25 mph onshore
12:00Rough
Big
21 mph onshore
15:00Rough
Big
20 mph onshore
18:00Rough
Big
17 mph cross-onshore
Wed 28
Big
2.2 m
Rough
Thu 29
Decent
1.2 m
Bumpy
Fri 30
Decent
1.4 m
Bumpy
Sat 31
Small
0.6 m
Bumpy
Sun 1
Small
0.5 m
Clean
Mon 2
Flat
Under 0.3 m
Clean
Tue 3
Flat
Under 0.3 m
Clean

Based on daytime wind and wave size. Dashed days are further ahead and less certain.

A guide, not a safety forecast. There are no lifeguards and rip currents are common, so take care in the water.

Weather data by Open-Meteo.comAbout this forecast

How to read it

  • Clean: Light or offshore wind. Calm, tidy water.
  • Bumpy: An onshore breeze adding chop.
  • Blown out: Strong onshore wind has flattened and messed up the waves.
  • Rough: Big waves with onshore wind. Messy and powerful.
  • Windy: Strong wind. Take care on the beach and in the water.
  • Stormy: Gale or severe gusts. Stay out of the water.

Conditions use the strongest daytime wind and the biggest waves reaching the beaches. Days further ahead are less certain. Wetsuit hints are a guide only.

Where the data comes from

Forecast data by Open-Meteo.com (CC BY 4.0), using Met Office (CC BY-SA 4.0), ECMWF (CC BY 4.0), Copernicus Marine Service and DWD data. The verdicts, conditions and figures are our own reading of the forecast, shared under CC BY-SA 4.0.

Rhosneigr is Anglesey's surf village. Within a few miles of the high street there are half a dozen breaks, each facing the swell in its own way, from forgiving beach waves where beginners learn to stand up, to technical reef breaks that only reward people who know them well.

It's also the island's watersports hub, so you'll share the water with windsurfers, kitesurfers and wing foilers. When the wind is wrong for surfing, it's usually right for them, and on a good day the bay is alive with all of it.

This guide is for anyone who wants to surf here: when to come, how to read the conditions like a local, which beach to choose, where to learn and hire kit, and how to stay safe.

When to come

If you're after proper surf, the best months are October to February. That's when deep Atlantic low-pressure systems send long-period groundswell up into the Irish Sea and onto Anglesey's west coast. Late autumn, October and November, is the sweet spot: the sea still holds some of its summer warmth, but the winter swells have already arrived.

Summer is a different story. It's often flat or small, the water is at its warmest, and the beaches are busy with families. That makes it a great time to learn, with gentle whitewater and lessons running, but don't plan a summer trip around big waves.

Water temperature and wetsuits

The Irish Sea is cold for most of the year, and the right wetsuit is what keeps you in the water.

Summer

June to August

Sea temperature

At its warmest, mid-teens °C

What to wear

3/2mm full suit; a shorty on the rare hot day

Autumn

September to November

Sea temperature

Cooling, low teens °C

What to wear

4/3mm suit, and boots by November

Winter

December to April

Sea temperature

Coldest, around 8°C

What to wear

5/4mm or 6/5mm hooded suit, 5mm boots and gloves

If you're hiring, the local shops have wetsuits, so you don't need to bring your own.

Reading the forecast like a local

A basic weather app won't tell you whether it's worth paddling out. Locals look at three things.

  1. Swell period, not just size.

    Look for a period of around 8 to 9 seconds or more. Longer-period groundswell has the energy to push properly into the bays; short-period windswell tends to arrive weak and messy. Surf-forecasting sites such as Surfline and Surf-Forecast show this.

  2. The wind direction, hour by hour.

    Rhosneigr's beaches face west to south-west, so you want wind from the east or north-east, blowing offshore and grooming the waves. A westerly blows straight onshore and turns everything ragged. Locals cross-check the wind models (such as GFS and WRF) on sites like Windguru and Windfinder to pin down the exact hour the wind swings round to the north-east.

  3. The live view.

    Before packing the car, check Funsport's webcam on their website for the real state of the water. A good tell: if the kitesurfers are out on small kites, it's blowing hard, and the surf is probably blown out.

The tide matters too, and differently on every beach. The table in the next section shows which tide suits each break.

The breaks

  1. 01Traeth CymyranImprovers and experienced
  2. 02Traeth CrigyllBeginners and improvers
  3. 03Traeth Llydan (Broad Beach)Improvers and experienced
  4. 04Porth Tyn TywynExperienced only
  5. 05Porth Trecastell (Cable Bay)Intermediate and experienced
  6. 06Porth CwyfanExperienced only, never alone
  7. 07Traeth Mawr, AberffrawBeginners when small, experienced in big swell

Traeth Cymyran

NESW
Best swell
West to south-westerly
Offshore wind
North-east to east-north-east
Best tide
Any tide
Who it suits
Improvers and experienced

Cymyran is one of the most challenging breaks to get to in North Wales, and getting there is half the adventure. A bumpy dirt track takes you past the end of the RAF Valley runways and a row of MOD signs warning you to keep out, with RAF police dogs on patrol. Stay on the track, park up, and carry your board through the sand dunes while jets roar overhead. The reward for making the effort: you'll often have the peak to yourself. It picks up the same swell as Traeth Llydan and works on any tide.

Traeth Crigyll

NESW
Best swell
South-westerly
Offshore wind
North-east to north-north-east
Best tide
Low for learning, rising tide for better waves
Who it suits
Beginners and improvers

The most accessible break and the hub of the village's surfing, a few steps from the high street. Its gentle, sandy slope makes it the most forgiving place on the coast to learn to pop up, and low tide is ideal for beginners finding their feet in the whitewater. As the tide pushes in, the sandbanks start to line up and the waves take on better shape. It works best on a solid south-westerly swell with a north-north-easterly to north-easterly breeze grooming the faces. It can hold its shape in a straight easterly, but any wind from the west ruins it almost instantly. Short-period storm swell turns it into an unruly wall of whitewater that closes out across the whole bay, so check the swell period before you go.

Traeth Llydan (Broad Beach)

NESW
Best swell
West to south-westerly
Offshore wind
North-east to east-north-east
Best tide
Low to mid
Who it suits
Improvers and experienced

Sitting further south, beyond the shelter of the village reef, Traeth Llydan picks up open groundswell first. Locals know it as the heavier, more exposed of the two village beaches, with a steeper, more powerful take-off than Crigyll. It's best from low to mid tide; at high tide the water reaches the pebbles and dunes, and backwash spoils the waves. In bigger winter swells it can turn into a heavy shore break.

Traeth Llydan

Porth Tyn Tywyn

NESW
Best swell
Big south-westerly groundswell
Offshore wind
East to east-north-east
Best tide
Mid, on a rising tide
Who it suits
Experienced only

At high tide it looks like a harmless sandy cove. As the tide drops, rocky ledges and thick kelp reefs appear just below the surface. It needs a substantial, long-period south-westerly groundswell to push past the reefs, and a short-period windswell soon closes it out. It's best mid-tide on the push, with an east to east-north-easterly wind: high tide swamps it, and low tide leaves the rocky ledges exposed. This is a quiet spot for locals precisely because they know where the rocks are.

Surfers at Porth Tyn Tywyn

Porth Trecastell (Cable Bay)

NESW
Best swell
South-westerly
Offshore wind
North-east
Best tide
Mid
Who it suits
Intermediate and experienced

The narrow bay acts like a funnel, squeezing south-westerly swell into short, punchy, wedging waves with fast, steep take-offs. When the village beaches are out of control, the narrow, deep cove keeps the swell rideable for longer than anywhere else nearby, before it too turns into a washing machine, and the headlands shelter it from cross-shore winds that ruin the village beaches. Best at mid tide: at low tide it closes out across the mouth of the bay, and at high tide the waves break straight onto the pebbles.

Porth Cwyfan

NESW
Best swell
Big winter south-westerly groundswell
Offshore wind
North to north-east, or calm
Best tide
Low to mid
Who it suits
Experienced only, never alone

Not a regular surf spot, but an unforgettable one. It takes an enormous, raw winter groundswell to bring lines onto the outer reef around the church island, and short-period swell closes it out instantly. It's best in a light northerly to north-easterly or dead calm, from low to mid tide, before the rising tide swallows the way across to the island. The wave is highly inconsistent, and the paddle-out crosses shallow rock beds.

Traeth Mawr, Aberffraw

NESW
Best swell
Big south-westerly groundswell
Offshore wind
North-north-east to north-east
Best tide
Low to mid, rising
Who it suits
Beginners when small, experienced in big swell

It needs a big south-westerly groundswell to wake up, but when it does, the sandbanks at the river mouth shape it into beautiful, long marching walls. A short, local windswell closes it out. When it's small it suits beginners and improvers; in a big winter swell it's one for experienced surfers. Best from low tide, rising.

Sharing the water

In Rhosneigr, surfers share the bay with windsurfers, kitesurfers and wing foilers, and on a windy day there can be a lot going on. Most local riders are friendly and look out for paddlers, and a bit of awareness keeps everyone happy.

  • Remember the speed difference. Wind-powered riders move far faster than you and can't stop instantly. Give them room, and don't paddle across their path.
  • Choose your spot. On busy wind days, surfers tend to stick to the breaking waves near the shore, while the kites and sails use the open water further out. If the kites are out in force, Traeth Llydan or Cable Bay may be the quieter choice.
  • Make eye contact. If a rider is heading towards your wave, catch their eye. Most will turn away or jump the back of the wave to leave it for you, as long as you're not dropping in blind.
  • The usual surf manners apply. The surfer closest to the peak has priority, don't drop in, and don't let go of your board in a crowd.
  • Look out for kite lines on the beach and in the water. They're thin, hard to see, and can cut.

Lessons, hire and surf shops

Two local businesses cover everything from your first lesson to a new board.

Funsport

1 Beach Terrace, Rhosneigr, LL64 5QB01407 810899funsportonline.co.uk

One of the UK's longest-running watersports shops, here since 1995. Funsport runs lessons in surfing, paddleboarding, windsurfing, kitesurfing and wing foiling, rents out equipment, including surfboards and winter wetsuits, and has a shop full of boards, wetsuits and accessories. Its staff live and breathe these waters. They also run a kids' beach club, host events such as the BWA Rhosneigr Wave Classic, and keep the webcam that every local checks before heading out.

Gecko Surf

High Street, Rhosneigr01407 811247geckosurf.co.uk

A surf and paddleboard school with a shop on the high street. Gecko offers surf and paddleboard lessons, kitesurfing and coasteering, plus equipment hire, a shop and gift vouchers. Lessons are booked by phone.

Both are listed in our directory, with opening details and links.

Staying safe

There are no lifeguards on any of Rhosneigr's beaches, so your safety is in your own hands.

  • Know your level. If you're new, take a lesson or stick to Traeth Crigyll in small conditions. The reef breaks are for experienced surfers only.

  • Never surf alone, especially at Porth Cwyfan, Porth Tyn Tywyn or in winter.

  • Respect the river mouths. Currents at the Afon Crigyll and in the Aberffraw estuary can pull you out fast. At Traeth Cymyran, surf down the beach, away from the river mouth.

  • If you're caught in a rip, don't fight it. Stay on your board, paddle parallel to the beach until you're free of the current, then head back in on the waves.

  • Check the tide before you go. It changes every break here, and at Porth Cwyfan it decides whether you can get back.

  • Dress for the water, not the air. Cold water saps strength faster than you expect, especially in winter.

In an emergency at sea, call 999 and ask for the Coastguard.

Details in this guide were checked in October 2026.

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