Surf Forecasts:
Rhosneigr surf forecast from 30 Aug 2026:
- Most powerful swell: Wednesday 2 Sep, 7PM (local time) - 8ft (2.4m), 7s period, SW swell with 566 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 2.4m 7s and forecast to arrive on Wednesday (Sep 02) 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 1.2m 5s period and expected on Saturday (Sep 05) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 2nd Sep) | 8ft (2.4m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright, Rusty here again, breaking it down in feet and miles per hour for you.
Look, I’m going to be honest – the next couple of weeks are a tough sell for a good old-fashioned surf. We’ve got a long stretch of poor conditions stretching right through the first week of September and beyond. Swell shows up, sure, but the wind is just murdering the surface.
Let’s start at Rhosneigr. The water is about 64°, which is more than 4° warmer than average for this time of year, so you’re not going to freeze your tail off.
The first semi-interesting day is Wednesday, September 2nd. We see a swell hitting 7ft from the SSW, with a moderate energy reading of 444. That’s some size! But a strong cross-onshore breeze at nearly 25 mph is going to make it a raggedy, lumpy mess. This spot is for beginners, but that size is pushing the limit and the wind will make it a chore.
The one standout on the whole calendar is Saturday, September 12th. On the morning of the 12th, we get a solid 7ft SW groundswell with a long 9-second interval. The combined energy jumps way up to 723 – that’s a real push. The wind is a moderate 15 mph breeze, and it’s blowing straight onshore. It won't be glassy, but it’ll have some shape. That’s expert territory on the size, but if you’ve got the skills, it’s the only time the ocean is really putting power on the reef.
The rest of the 16 days is basically a lesson in frustration. You’ll see constant onshore and cross-onshore winds above 15 mph, ruining whatever small to moderate swell (with energy readings in the 40s and 100s) manages to creep in. There are huge gaps where I’d tell you to just stay home.
So, bottom line: For the experienced surfer, that Saturday the 12th is your best shot. For the rest of us, this is a “take a look at the kites” kind of forecast. Don’t hold your breath, but things can change.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sat afternoon. Very mild (max 17°C on Sun morning, min 14°C on Mon morning). Winds increasing (light winds from the NW on Sat night, fresh winds from the WNW by Mon morning). | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Wed morning. Very mild (max 17°C on Tue afternoon, min 13°C on Fri morning). Mainly strong winds. | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 6 | SSW 8 | SSW 8 | SSW 5 | SW 8 | WNW 6 | NW 5 | SSW 7 | SW 4 | SW 5 | SW 5 | SSW 7 | SW 7 | SW 7 | SW 6 | SW 6 | WSW 7 | W 6 | W 5 | SW 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 29 | 126 | 92 | 72 | 110 | 143 | 51 | 21 | 29 | 53 | 79 | 444 | 495 | 301 | 171 | 190 | 517 | 366 | 121 | 12 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on | on | on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 11:00PM4.28m | 11:19AM3.92m | 11:30PM4.30m | 11:49AM3.93m | 00:03AM4.23m | 12:23PM3.87m | 00:40AM4.07m | 1:01PM3.73m | 1:22AM3.82m | 1:47PM3.51m | 2:14AM3.50m | 2:44PM3.26m | 3:24AM3.18m | |||||||
Low Tide | 5:26PM0.21m | 5:52AM0.00m | 6:01PM0.20m | 6:27AM0.05m | 6:37PM0.27m | 7:03AM0.19m | 7:16PM0.42m | 7:43AM0.43m | 7:59PM0.63m | 8:28AM0.72m | 8:50PM0.88m | 9:25AM1.02m | 9:57PM1.11m | |||||||
 |  |  | |  |  |  |  | | |  |  | | |  | | | | | | |
 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — |
 | 8:15 | — | — | 8:13 | — | — | 8:10 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:00 | — |
mm | 2 | — | 1 | 2 | 1 | — | — | — | — | 1 | 3 | 3 | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 16 | 15 | 14 | 16 | 16 | 16 | 17 | 16 | 17 | 17 | 17 | 16 | 17 | 15 | 15 | 17 | 17 |
Feels °C | 15 | 16 | 13 | 11 | 12 | 7 | 13 | 13 | 12 | 13 | 12 | 12 | 11 | 13 | 10 | 10 | 7 | 9 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 8 | — | SW 8 | SW 8 | SW 8 | SW 8 | SSW 7 | — | WNW 4 | — | — | — | SW 15 | SW 14 | SW 14 | — | — | NNW 6 | SW 5 |
| kJ | 29 | 126 | — | 11 | 110 | 64 | 50 | 21 | — | 1 | — | — | — | 9 | 8 | 8 | — | — | 20 | 12 |
Swell 2 Height (m) Direction Period (s) | — | NW 3 | — | — | — | — | — | NNW 5 | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 6 |
| kJ | — | 2 | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | 8 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 |
Wind waves Height (m) Direction Period (s) | — | — | SSW 8 | SSW 5 | — | WNW 6 | NW 5 | W 3 | SW 4 | SW 5 | SW 5 | SSW 7 | SW 7 | SW 7 | SW 6 | SW 6 | WSW 7 | W 6 | W 5 | NW 5 |
| kJ | — | — | 92 | 72 | — | 143 | 51 | 5 | 29 | 53 | 79 | 444 | 495 | 301 | 171 | 190 | 517 | 366 | 121 | 74 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 175 | 46 | 294 | 283 | 46 | 519 | 46 | 46 | 301 | 242 | 253 | 932 | 259 | 284 | 786 | 543 | 543 | 606 | 169 | 46 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rhosneigr surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest