Surf Forecasts:
Rhosneigr surf forecast from 16 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 5ft (1.6m), 6s period, SW swell with 155 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 1.6m 6s and forecast to arrive on Wednesday (Aug 19) at 7PM. Winds are predicted to be cross-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 Friday (Aug 21) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 19th Aug) | 5ft (1.6m) 6s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at the Rhosneigr stretch.
Honestly, it’s a tough one. The next two weeks are looking pretty bleak for decent waves. This is one of those spells where you’d be better off checking the wind forecasts for kiteboarding than paddling out. There’s a long stretch here with nothing worthwhile. The only thing that even gets close to a surfable window is a few sessions around the end of the period, but even then it’s nothing to get excited about.
The water is running much warmer than normal for this time of year, sitting at 65°F with a 5°F anomaly, which is a bit unusual.
Right now, from Sunday the 16th all the way through to the end of August, it’s essentially flat and/or messy. We’ve got tiny 0.3 ft to 2 ft slop, short-period swell, and mostly onshore or cross-onshore winds making everything junk. The combined energy rarely breaks double digits (1 to 26), so there’s just no power in the water. There’s a brief uptick on Wednesday the 19th with 5 ft to 5 ft WSW swell, but it’s coming with a 30 km/h cross-onshore wind and only 5-6 second period, making it a lumpy, blown-out mess. Combined energy hits 101-159, but the quality is poor.
Thursday the 20th afternoon looks a bit cleaner with a cross-offshore wind from the N, but the swell is still short-period and messy. Not worth paddling for.
After that, it’s a long gap of tiny, clean, but completely flat surf from the 21st through to the 27th—just 0.3 ft of 14-15 second period groundswell, but with no size, it’s just a flat ocean. Combined energy sits at 7-8. The winds are light and cross-offshore, so it’s pretty, but unsurfable.
The best of a bad bunch might be Friday the 28th of August. We have a little 4 ft to 5 ft SSW swell, with a 7-second period, and light offshore winds from the NE in the morning, turning cross-offshore from the N in the afternoon. The combined energy jumps to 118-323, so there’s some actual power. It’s described as “surfable waves but very ordinary conditions,” so it’s not great, but it’s the closest thing to a surf you’ll get. The swell direction is SW, which is a decent angle for this exposed spot. It’s a beginner-friendly break that’s fairly consistent, but this is small and mediocre. Still, with mostly clean conditions, it’s your best bet.
Overall, the outlook is poor. There’s a two-week stretch of nothing, then a glimmer on the 28th. If you’re desperate, that’s the day to keep an eye on, but don’t get your hopes up.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Very mild (max 17°C on Mon night, min 14°C on Sun morning). Winds increasing (light winds from the WSW on Sun morning, fresh winds from the S by Mon night). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Very mild (max 16°C on Wed afternoon, min 12°C on Thu night). Winds decreasing (fresh winds from the WNW on Thu morning, light winds from the NNW by Fri morning). | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | S 6 | — | SW 3 | SW 4 | SW 5 | SW 4 | SW 5 | SW 6 | W 4 | WSW 5 | SW 6 | WSW 5 | NW 5 | NW 5 | SW 14 | SW 14 | SW 13 | SW 13 | SW 15 | SW 15 | SW 15 |
Wave Graph | |||||||||||||||||||||
1 | 0 | 4 | 4 | 4 | 27 | 10 | 16 | 17 | 91 | 150 | 150 | 66 | 126 | 8 | 7 | 7 | 7 | 8 | 8 | 8 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 12:25PM3.91m | 00:40AM4.27m | 1:04PM3.73m | 1:21AM3.95m | 1:44PM3.51m | 2:05AM3.58m | 2:29PM3.25m | 2:56AM3.21m | 3:26PM3.00m | 4:05AM2.90m | 4:46PM2.83m | 5:38AM2.76m | 6:19PM2.84m | ||||||||
Low Tide | 7:05PM0.20m | 7:34AM0.15m | 7:45PM0.46m | 8:13AM0.53m | 8:25PM0.77m | 8:54AM0.92m | 9:10PM1.10m | 9:40AM1.27m | 10:08PM1.38m | 10:45AM1.54m | 11:34PM1.55m | 12:20PM1.61m | 1:12AM1.48m | ||||||||
5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | |
— | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:32 | — | — | 8:30 | — | |
mm | — | — | — | — | — | 2 | — | — | 1 | — | 1 | 4 | 2 | 1 | 1 | — | — | — | — | — | — |
Temp °C | 15 | 15 | 16 | 16 | 16 | 17 | 16 | 17 | 17 | 15 | 16 | 15 | 15 | 16 | 14 | 14 | 15 | 13 | 14 | 15 | 14 |
Feels °C | 13 | 12 | 14 | 15 | 14 | 15 | 13 | 14 | 15 | 9 | 11 | 9 | 10 | 12 | 11 | 12 | 11 | 9 | 9 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | — | — | — | SW 4 | SW 5 | — | SW 5 | NW 4 | — | SW 16 | SW 15 | SW 16 | SW 6 | SW 7 | SSW 6 | SW 5 | SW 5 | SW 13 | SW 15 | NNW 4 | SW 15 |
— | — | — | 4 | 4 | — | 10 | 5 | — | 10 | 9 | 10 | 34 | 15 | 3 | 1 | 1 | 7 | 8 | 7 | 8 | |
Swell 2 Height (m) Direction Period (s) | S 6 | — | — | — | — | — | — | — | — | — | — | — | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | S 5 | — | SW 15 | SW 12 |
1 | — | — | — | — | — | — | — | — | — | — | — | 8 | 8 | 8 | 7 | 7 | 1 | — | 8 | 6 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 16 | — | — | — | — | — | — | — | — | — | — | — | — | W 12 |
— | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | 3 | |
Wind waves Height (m) Direction Period (s) | — | — | SW 3 | NW 3 | WNW 3 | SW 4 | NW 4 | SW 6 | W 4 | WSW 5 | SW 6 | WSW 5 | NW 5 | NW 5 | NNW 5 | NNW 5 | NNW 5 | N 4 | NNW 5 | — | NNW 4 |
— | — | 4 | 2 | 2 | 27 | 7 | 16 | 17 | 91 | 150 | 150 | 66 | 126 | 42 | 72 | 39 | 16 | 17 | — | 20 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 253 | 292 | 212 | 256 | 295 | 508 | 175 | 1217 | 259 | 284 | 315 | 259 | 242 | 242 | 187 | 187 | 283 | 182 | 271 | 211 | 211 |
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.










