Surf Forecasts:
Rhosneigr surf forecast from 14 Sep 2026:
- Most powerful swell: Saturday 19 Sep, 7PM (local time) - 6.5ft (2.0m), 7s period, SW swell with 363 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 2.0m 7s and forecast to arrive on Saturday (Sep 19) at 7PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Wednesday (Sep 16) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Sat 19th Sep) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Right then mate, Rusty here. Let's have a proper look at what's on the menu for Rhosneigr.
Straight up, I gotta be honest with you. The next week or so is looking pretty grim for a proper surf. We've got some lumpy, onshore junk with scores that are basically zero right through from today, the 14th of September, all the way into the back end of next week. The swell's all over the shop but the wind is just wrecking it. There's a long stretch of nothing much to get excited about.
We're looking at a real window of opportunity on Tuesday the 22nd of September. That's when things could finally come together. The morning will see a clean 7ft swell from the west, with a period of 6 seconds, and the wind will swing around to a light cross-offshore breeze from the north (12 mph). The combined energy hits 353 (moderate). By the afternoon, it gets even better with a 7ft west swell, a gentle 9 mph cross-offshore wind, and glassy clean conditions. The energy reading is 304 (moderate). This is the standout session. The swell is pushing 7ft, which is getting into the territory where it's better for experienced surfers rather than complete beginners. The water temp is about average for this time of year with no major anomaly. Rhosneigr is a fairly consistent, exposed sand-bottom beach break that loves a good SW swell, and while a 6-second period isn't long, the clean conditions and decent size make it your best bet by a mile.
After that little burst, things drop right off again. The 23rd and 24th go flat and glassy, with tiny dribbles. Then the 27th of September throws a massive 10ft SSW swell at the coast, but the forecast actually says it will be too big for the break and the wind is light and onshore, so that's a hard pass for anyone but the most experienced chargers, and even then it's a risk. The combined energy is 853 (strong). By Monday the 28th, we're back to small, clean but ordinary conditions with a little 2ft swell for the morning, but it's nothing to write home about.
So, to sum it up: you've got a long wait for the one day that looks proper. Mark your calendar for Tuesday the 22nd of September. The swell size, the clean cross-offshore wind, and the moderate energy make it the pick of the entire 16-day window. Everything else before and after is a write-off or for the die-hards only. The crowds at Rhosneigr can be present, but on a Tuesday in late September you might luck out.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Mon night. Very mild (max 17°C on Mon afternoon, min 13°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri afternoon. Very mild (max 17°C on Fri night, min 13°C on Thu night). Winds decreasing (fresh winds from the SSW on Fri afternoon, light winds from the W by Sat night). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 5 | SSW 5 | SW 6 | WSW 6 | WSW 5 | NW 5 | SW 6 | NW 5 | SW 5 | WSW 5 | WSW 5 | W 5 | WSW 5 | SW 6 | SW 6 | SW 6 | SSW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 88 | 311 | 148 | 87 | 110 | 6 | 40 | 99 | 117 | 78 | 131 | 69 | 178 | 104 | 162 | 340 | 120 | 34 | 15 | 15 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | on | cross-on | cross-on | cross | on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 11:50AM4.02m | 00:07AM4.16m | 12:24PM3.85m | 00:44AM3.84m | 1:00PM3.60m | 1:24AM3.48m | 1:40PM3.31m | 2:09AM3.11m | 2:30PM3.01m | 3:16AM2.79m | 3:54PM2.78m | 5:10AM2.63m | 5:52PM2.79m | ||||||||
Low Tide | 6:35PM0.19m | 6:58AM0.30m | 7:12PM0.44m | 7:33AM0.66m | 7:49PM0.75m | 8:09AM1.03m | 8:30PM1.08m | 8:52AM1.36m | 9:24PM1.38m | 9:52AM1.62m | 10:46PM1.58m | 11:27AM1.71m | 00:33AM1.54m | ||||||||
 | |  |  |  | | |  | | | |  | |  | | | | | | | | |
 | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — |
 | — | 7:37 | — | — | 7:35 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — |
mm | — | — | 5 | — | 1 | 2 | 1 | — | 3 | — | — | — | — | 5 | 1 | — | — | — | — | — | — |
Temp °C | 16 | 17 | 17 | 14 | 16 | 15 | 13 | 14 | 15 | 14 | 15 | 14 | 14 | 15 | 17 | 15 | 17 | 16 | 17 | 18 | 18 |
Feels °C | 15 | 12 | 13 | 8 | 13 | 9 | 8 | 9 | 10 | 8 | 10 | 8 | 8 | 10 | 13 | 11 | 15 | 15 | 14 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | — | SW 12 | — | — | — | SW 6 | SW 6 | — | — | — | — | — | — | — | — | — | — | SW 6 | SW 6 | SW 6 | SW 6 |
| kJ | — | 6 | — | — | — | 12 | 6 | — | — | — | — | — | — | — | — | — | — | 120 | 34 | 15 | 15 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 11 | SW 11 | W 11 | — | — | — | — | — | — | — | — | — | — | — | S 14 | — |
| kJ | — | — | — | — | — | 2 | 5 | 2 | — | — | — | — | — | — | — | — | — | — | — | 4 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 14 | SW 14 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 8 | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | SSW 5 | SW 6 | WSW 6 | WSW 5 | NW 5 | NW 6 | NW 5 | SW 5 | WSW 5 | WSW 5 | W 5 | WSW 5 | SW 6 | SW 6 | SW 6 | SSW 6 | — | — | — | — |
| kJ | 22 | 88 | 311 | 148 | 87 | 110 | 136 | 40 | 99 | 117 | 78 | 131 | 69 | 178 | 104 | 162 | 340 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 253 | 253 | 301 | 543 | 543 | 340 | 175 | 259 | 277 | 190 | 832 | 175 | 253 | 285 | 259 | 221 | 46 | 46 | 253 | 259 | 259 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Rhosneigr Surf forecast
The above surf forecast table for Rhosneigr provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rhosneigr can be found by selecting the local surf guide option on the grey menu. Our Rhosneigr surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Rhosneigr) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Rhosneigr may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Anglesy? If you are looking for accommodation near Rhosneigr, camping, hotels and holiday cottages in Anglesy, consider staying in Anglesey which is 2 km (1 miles) away. Other places in and around Anglesy where you can find information about places to rent, and car hire include Holyhead which is 12 km (7 miles) away, Bangor, Porthmadog and Llandudno.
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