
Surf Forecasts:
Rhosneigr surf forecast from 12 Sep 2026:
- Best quality surf: Sunday 13 Sep, 1AM (local time) - 3ft (0.9m), 7s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 19 Sep, 4AM (local time) - 8ft (2.5m), 7s period, SW swell with 696 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 1AM (local time) - 3ft (0.9m), 7s period with SSW swell.
Best Forecast Surf Conditions for Rhosneigr this week:
The surf forecast for Rhosneigr over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 1AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.3m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Rhosneigr in the next 16 days are 2.5m 7s and forecast to arrive on Saturday (Sep 19) at 4AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Wednesday (Sep 16) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sun 13th Sep) | 3ft (0.9m) 7s |
| Best Surf | 1AM (Sun 13th Sep) | 3ft (0.9m) 7s |
| Most Powerful | 4AM (Sat 19th Sep) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Right, let’s have a look at what the next couple of weeks are doing for Rhosneigr. To be honest, mate, it’s a bit of a rough stretch. The wind is just all wrong for the most part, and the swell that does show up comes in with a lot of onshore energy, making a mess of things. The water here is sitting at 63°, which is a touch warmer than we’d normally expect for this time of year, so at least it won’t be a cold one if you’re stubborn enough to go out.
We start off the run on Saturday, September 12th, with a solid 8 ft SW swell but that 25 mph onshore wind is just trashing it – combined energy is 505. It’s not really a paddler’s game. That theme carries on through that weekend and into the next week. There are a couple of small windows, like early on Sunday the 13th when the wind drops to a 3 mph NE offshore and the swell pulls right back to 2 ft, but the energy is only 26 – it’s tiny and clean, but barely a ripple. The following Monday the 21st is the closest we get to something rideable. A glassy morning with a 2 ft SW groundswell (period 7 seconds) and just 60 in the energy bank. The conditions are described as surfable but very ordinary, so it’s a last resort for a log on a high tide.
The second week gets a bit more active, but not in a good way. By Sunday the 20th, we’ve got an onshore gale with an 8 ft SSW swell and energy readings of 860 – that’s all for the kites, not for us. The rest of the run into the end of September stays small, messy, or pinned flat by cross-onshore winds. The only real window where the wind turns off is on Friday the 25th, with a 9-15 mph NE offshore breeze, but the swell is just 1 ft, so it’s going to be a polished, flat lake. It’s a grim 16-day outlook, to be honest. There’s no standout session here, but if I had to point to the least bad option, it would be that glassy Monday morning on the 21st – just don’t expect much.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Sat morning. Very mild (max 18°C on Sat afternoon, min 14°C on Mon night). Winds decreasing (strong winds from the SW on Sat morning, calm by Sun morning). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed night. Very mild (max 16°C on Tue afternoon, min 13°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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) | SW 7 | SW 7 | SSW 7 | SSW 6 | SW 6 | SSW 3 | SSW 5 | SSW 5 | SSW 6 | WSW 6 | W 5 | NW 5 | SW 6 | W 11 | WSW 4 | W 5 | W 5 | W 5 | WSW 5 | SW 4 | SSW 7 |
Wave Graph | |||||||||||||||||||||
547 | 287 | 76 | 26 | 18 | 8 | 31 | 99 | 293 | 135 | 49 | 110 | 6 | 2 | 31 | 110 | 65 | 55 | 35 | 36 | 537 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | glassy | cross-on | cross-on | on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | on | cross | cross-on | cross-on | on | on | on |
High Tide | 10:42AM4.11m | 10:54PM4.52m | 11:16AM4.11m | 11:30PM4.39m | 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 | |||||||
Low Tide | 5:22PM-0.06m | 5:48AM-0.24m | 5:59PM0.01m | 6:23AM-0.01m | 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 | ||||||||
6:45 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | |
— | 7:42 | — | — | 7:39 | — | — | 7:37 | — | — | 7:35 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | |
mm | 3 | — | — | — | — | — | — | — | 5 | — | — | 1 | — | — | 3 | — | — | — | — | — | 3 |
Temp °C | 17 | 18 | 18 | 17 | 17 | 17 | 16 | 17 | 17 | 15 | 16 | 14 | 14 | 15 | 14 | 13 | 15 | 14 | 14 | 15 | 16 |
Feels °C | 12 | 14 | 18 | 17 | 17 | 16 | 12 | 13 | 11 | 10 | 12 | 8 | 8 | 11 | 9 | 7 | 9 | 8 | 9 | 8 | 10 |
Swell 1 Height (m) Direction Period (s) | — | — | SSW 7 | SSW 6 | SW 6 | — | — | — | — | — | — | SW 6 | SW 6 | SW 5 | NW 4 | SW 6 | — | — | — | — | — |
— | — | 76 | 26 | 18 | — | — | — | — | — | — | 9 | 6 | 1 | 3 | 65 | — | — | — | — | — | |
Swell 2 Height (m) Direction Period (s) | — | — | NW 4 | — | — | — | — | — | — | — | — | S 11 | SW 11 | — | NNW 5 | — | — | — | — | — | — |
— | — | 2 | — | — | — | — | — | — | — | — | 2 | 5 | — | 2 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | W 11 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SW 7 | SW 7 | — | — | — | SSW 3 | SSW 5 | SSW 5 | SSW 6 | WSW 6 | W 5 | NW 5 | NW 5 | NW 5 | WSW 4 | W 5 | W 5 | W 5 | WSW 5 | SW 4 | SSW 7 |
547 | 287 | — | — | — | 8 | 31 | 99 | 293 | 135 | 49 | 110 | 103 | 42 | 31 | 110 | 65 | 55 | 35 | 36 | 537 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 259 | 331 | 0 | 46 | 175 | 253 | 253 | 253 | 283 | 46 | 543 | 189 | 321 | 283 | 277 | 284 | 283 | 284 | 284 | 283 | 888 |
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.










