Surf Forecasts:
Rhosneigr surf forecast from 4 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 1AM (local time) - 8ft (2.5m), 7s period, SSW swell with 553 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 2.5m 7s and forecast to arrive on Thursday (Sep 10) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 6s period and expected on Wednesday (Sep 09) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Thu 10th Sep) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright, Rusty here, and I’ve got to be straight with you: the next couple of weeks are looking grim for Rhosneigr. We’ve got a long, dry spell of poor conditions ahead, so if you’re desperate for a paddle, you might want to keep the board in the car and just go for a walk on the beach.
The outlook starts on Friday, September 4th, and honestly, it’s a write-off right out of the gate. We’ve got a 6ft swell from the WSW, but a fresh 22 mph cross-onshore wind has it chopped up and lumpy, with combined swell energy sitting at a weak 176. The water temp is about average for this time of year, so no surprises there, but the conditions are just nasty. This pattern of fresh cross-onshore winds and lumpy surf sticks with us all through the first weekend and into Monday.
We do see a spike in size on Tuesday, September 8th, with the swell jumping to 7ft from the west. That’s moderate energy (366), but it’s still cross-on at 22 mph, so you’re looking at a messy, blown-out situation. At that size with those winds, it’s a kite surfer’s playground, not a paddle surfer’s.
The rest of that first week is more of the same: onshore winds, small to moderate swell, and “poor surf conditions” stamped all over it. There’s a brief moment on Sunday, September 13th morning, where things look *slightly* more hopeful—a 4ft SW swell with a light 6 mph cross-offshore wind. The energy is still weak (68), and the waves are surfable but very ordinary. It’s the only time in the entire 16 days where the score even hits a 1 out of 10. That’s your best bet, and it’s not saying much.
From the 14th onwards, it’s a slow slide into nothing. The swell drops off to ankle-biters, and even the wind goes clean and glassy on the 18th, but there’s no wave energy to speak of. The morning of September 18th is glassy with 0.7ft swell—perfect conditions for a flat day.
So here’s the bottom line: there is no standout session in this 16-day window. The only glimmer is the Sunday morning of the 13th, and even that’s barely worth wetting a wetsuit for. If you’re a beginner, there’s nothing here for you either—even the bigger days are blown out. Keep an eye on the forecasts, because it tends not to stay this poor for long, but for now, Rhosneigr is a miss.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Thu night. Warm (max 20°C on Sun afternoon, min 13°C on Fri night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon night. Very mild (max 17°C on Sun night, min 12°C on Mon night). Mainly strong winds. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | WSW 5 | SW 6 | W 5 | W 5 | SW 6 | SSW 4 | SSW 5 | SSW 6 | SSW 6 | SW 14 | SW 5 | WSW 6 | W 6 | W 6 | WNW 6 | W 5 | SW 5 | SSW 7 | SW 7 | SW 7 | W 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 168 | 123 | 120 | 46 | 26 | 42 | 55 | 119 | 202 | 40 | 63 | 211 | 366 | 214 | 201 | 71 | 55 | 553 | 169 | 104 | 46 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross |
High Tide | 2:44PM3.26m | 3:24AM3.18m | 4:06PM3.08m | 5:04AM3.02m | 5:48PM3.13m | 6:46AM3.12m | 7:12PM3.41m | 7:58AM3.37m | 8:11PM3.77m | 8:48AM3.63m | 8:58PM4.11m | 9:29AM3.86m | 9:39PM4.37m | ||||||||
Low Tide | 9:25AM1.02m | 9:57PM1.11m | 10:40AM1.25m | 11:26PM1.19m | 12:11PM1.26m | 00:57AM0.99m | 1:29PM1.03m | 2:07AM0.62m | 2:30PM0.70m | 3:02AM0.22m | 3:19PM0.38m | 3:49AM-0.10m | 4:02PM0.12m | ||||||||
 |  |  | | |  |  | |  | | | | |  | | | |  | |  | | |
 | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — |
 | — | 8:00 | — | — | 7:59 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:49 | — | — | 7:46 | — |
mm | — | — | — | — | — | 3 | — | — | — | — | — | 3 | — | 1 | — | — | — | 11 | — | 1 | 1 |
Temp °C | 16 | 17 | 16 | 14 | 14 | 15 | 18 | 20 | 17 | 15 | 16 | 16 | 14 | 15 | 14 | 14 | 15 | 16 | 17 | 17 | 16 |
Feels °C | 10 | 11 | 10 | 11 | 10 | 11 | 12 | 15 | 13 | 12 | 11 | 8 | 7 | 8 | 8 | 8 | 10 | 12 | 14 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 14 | NNW 6 | WNW 4 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 | SW 13 | — | — | — | N 13 | NNW 6 | NW 4 | — | — | SW 7 | SW 7 |
| kJ | 8 | 8 | 8 | 6 | 3 | 7 | 7 | 6 | 6 | 33 | 44 | — | — | — | 3 | 18 | 4 | — | — | 104 | 25 |
Swell 2 Height (m) Direction Period (s) | — | SW 14 | — | SW 14 | NNW 5 | — | — | — | — | — | — | — | — | — | — | — | NNW 5 | — | — | — | — |
| kJ | — | 8 | — | 7 | 5 | — | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | SW 14 | SW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 7 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 5 | SW 6 | W 5 | W 5 | SW 6 | SSW 4 | SSW 5 | SSW 6 | SSW 6 | WSW 4 | SW 5 | WSW 6 | W 6 | W 6 | WNW 6 | W 5 | SW 5 | SSW 7 | SW 7 | NW 4 | W 4 |
| kJ | 168 | 123 | 120 | 46 | 26 | 42 | 55 | 119 | 202 | 40 | 63 | 211 | 366 | 214 | 201 | 71 | 55 | 553 | 169 | 3 | 46 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 299 | 508 | 175 | 187 | 242 | 181 | 233 | 342 | 283 | 46 | 259 | 169 | 543 | 543 | 340 | 381 | 283 | 260 | 46 | 543 | 340 |
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