Surf Forecasts:
Rhosneigr surf forecast from 29 Aug 2026:
- Most powerful swell: Wednesday 2 Sep, 7PM (local time) - 8ft (2.5m), 7s period, SW swell with 715 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 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 0.7m 6s period and expected on Monday (Aug 31) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 2nd Sep) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
G’day, Rusty here. I’ve had a proper look at what Rhosneigr’s got coming at us over the next couple of weeks, and I gotta be straight with you—it’s looking pretty grim for a paddle. There’s a big dry spell to start, with no real surf to get excited about for a solid week and a half.
We kick off Saturday the 29th of August with nothing worth mentioning. Tiny, weak little waves with poor wind. That pattern sticks hard through the whole first week. We’re looking at constant onshore or cross-onshore wind, mostly fresh breezes, and the swell stays small or comes in with terrible shape. On Wednesday the 2nd of September, the swell does bump up to 6ft but it’s hammered by a 22 mph S wind, so it’s just a lumpy, choppy mess with weak 6-second period and (254) moderate energy. Not a wave you want to be under.
Things stay poor right through to Saturday the 5th of September. The morning is still cross-onshore with 6ft SW swell and (305) moderate energy, but the afternoon clears up. That’s our first real flicker of hope. The wind swings offshore out of the SW at 9 mph, clean conditions, and the swell builds to 8ft from the SSW with a 7-second period and (531) strong energy. The score is still marginal, but if you’re hungry enough, that Sunday afternoon might give you a few.
Then on Sunday the 6th of September, things finally click. The afternoon shows a 5ft SSW swell, wind turns light cross-off from the NNE at 6 mph, and it’s clean. The combined energy is (215) moderate. That’s the standout of the whole run. The waves will have enough push, and with that light offshore breeze, it’ll be glassy and lined up. It’s a proper window for a session.
After that, we slip back into the mire. Monday the 7th and Tuesday the 8th are messy or small. Wednesday the 9th is basically flat. Thursday the 10th gets strong, messy wind again. There’s a pulse on Friday the 11th of September with 6ft SSW swell and 8-second period, but it’s got a 16 mph onshore wind and (637) strong energy—too blown out to really recommend. By Saturday the 12th and Sunday the 13th, we’re back to tiny, weak, cross-shore chop.
Honestly, for the whole 16-day window, the best on offer is that Sunday afternoon (6th of September) at Rhosneigr. It’s the only time you’ve got a clean, offshore wind with a decent sized, workable swell. Every other day is a write-off for a proper surf. If you’ve got a kite, some of those windier days might look more interesting, but for a paddle, it’s a long wait for one good session.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Sat morning. Very mild (max 17°C on Sat afternoon, min 14°C on Sun night). Winds increasing (light winds from the NNW on Sat afternoon, fresh winds from the WNW by Sun night). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Tue night. Very mild (max 17°C on Wed morning, min 14°C on Thu night). Winds increasing (moderate winds from the S on Tue night, strong winds from the WSW by Thu night). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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 6 | SSW 6 | SSW 9 | SW 8 | SSW 5 | SW 7 | NW 6 | SW 8 | SW 5 | SW 5 | SSW 5 | SSW 6 | SW 7 | SW 7 | SW 7 | WSW 6 | SW 6 | WSW 5 | WSW 6 | WSW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 44 | 21 | 129 | 72 | 59 | 160 | 143 | 30 | 31 | 71 | 90 | 55 | 481 | 566 | 346 | 235 | 129 | 123 | 163 | 131 | 29 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | on | cross-on | cross-on | cross-on | cross | cross-on | on | on | cross-on | on | on | on | on | on | on | on | cross-on | cross-on | cross |
High Tide | 10:51AM3.84m | 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 | ||||||||
 | |  |  | | |  | | |  | |  | | | |  |  | | | | | |
 | 6:20 | — | — | 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 | 5 | 1 | — | 2 | 2 | — | — | — | — | — | — | 5 | — | — | 1 | — | 1 | 1 | 1 | — | — |
Temp °C | 16 | 17 | 15 | 17 | 17 | 15 | 15 | 16 | 17 | 16 | 16 | 16 | 17 | 17 | 17 | 16 | 17 | 16 | 16 | 17 | 15 |
Feels °C | 15 | 17 | 14 | 14 | 12 | 13 | 9 | 13 | 14 | 12 | 11 | 12 | 15 | 13 | 14 | 11 | 11 | 9 | 8 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 6 | SSW 9 | — | — | SW 7 | SW 8 | NNW 6 | NNW 5 | — | — | — | — | — | SW 15 | — | SW 14 | SW 14 | — | SW 14 | SW 6 |
| kJ | 44 | 21 | 129 | — | — | 126 | 62 | 31 | 4 | — | — | — | — | — | 9 | — | 8 | 8 | — | 8 | 29 |
Swell 2 Height (m) Direction Period (s) | — | — | NW 3 | — | — | — | — | SW 8 | SSW 8 | — | — | — | — | — | — | — | — | — | — | — | SW 14 |
| kJ | — | — | 3 | — | — | — | — | 30 | 6 | — | — | — | — | — | — | — | — | — | — | — | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SW 8 | SSW 5 | SW 7 | NW 6 | W 4 | SW 5 | SW 5 | SSW 5 | SSW 6 | SW 7 | SW 7 | SW 7 | WSW 6 | SW 6 | WSW 5 | WSW 6 | WSW 6 | NW 4 |
| kJ | — | — | — | 72 | 59 | 160 | 143 | 14 | 31 | 71 | 90 | 55 | 481 | 566 | 346 | 235 | 129 | 123 | 163 | 131 | 24 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 277 | 211 | 212 | 46 | 228 | 283 | 46 | 283 | 169 | 175 | 301 | 301 | 46 | 257 | 253 | 283 | 933 | 508 | 307 | 301 | 346 |
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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