Surf Forecasts:
Rhosneigr surf forecast from 15 Sep 2026:
- Most powerful swell: Friday 18 Sep, 7PM (local time) - 8ft (2.4m), 7s period, SW swell with 563 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 Friday (Sep 18) 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 1.3m 5s period and expected on Wednesday (Sep 16) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Fri 18th Sep) | 8ft (2.4m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright folks, Rusty here, and the news for Rhosneigr isn't what we want to hear. We're looking at a pretty flat spell for the next sixteen days. The water temp is sitting at about 62°, a tad warmer than usual, but that's the only bright spot.
From Tuesday, the 15th of September, it's all a bit sad. We've got about 4ft of weak, short-period west swell, but the energy is low, around 85, and a 25 km/h cross-onshore breeze is making a mess of it. Thursday morning the 17th sees the swell bump up to 6ft from the WSW, with energy climbing to 188, but it's getting hammered by a fresh breeze. The wind is onshore or cross-onshore for days, making conditions poor. For a spot like this, it's more of a kite-surfing scene when the wind is that strong.
After that, the surf just dies. From the 20th of September through to the end of the month, we're looking at tiny surf – ankle-biters under 2ft – with energy in the single digits. There are a couple of glassy mornings, like on the 22nd and the 27th, but with hardly any swell, glassy just means flat. A few long-period pulses show up, but they're only a few inches. It's a real dry spell, and for this coast, that's just how it goes sometimes. Leave the board at home for this one.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Tue afternoon. Very mild (max 16°C on Tue afternoon, min 13°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Fri afternoon. Very mild (max 18°C on Sun night, min 12°C on Sat night). Winds decreasing (strong winds from the SSW on Fri afternoon, light winds from the WSW by Mon morning). | |||||||||||||||||||
Tue 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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) | W 5 | SW 6 | NW 5 | W 4 | SW 5 | WSW 6 | W 6 | W 6 | WSW 5 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SSW 6 | SW 5 | SW 5 | SW 5 | SW 4 | SSW 2 |
Wave Graph  | ||||||||||||||||||||
 kJ | 85 | 13 | 68 | 18 | 141 | 188 | 180 | 133 | 82 | 326 | 248 | 301 | 135 | 46 | 26 | 49 | 53 | 10 | 5 | 1 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | on | cross-on | on | on | on | cross-on |
High Tide | 00:44AM3.84m | 1:00PM3.60m | 1:24AM3.48m | 1:40PM3.31m | 2:09AM3.11m | 2:30PM3.01m | 3:16AM2.79m | 3:54PM2.78m | 5:10AM2.63m | 5:52PM2.79m | 6:48AM2.73m | 7:09PM3.00m | ||||||||
Low Tide | 7:12PM0.44m | 7:33AM0.66m | 7:49PM0.75m | 8:09AM1.03m | 8:30PM1.08m | 8:52AM1.36m | 9:24PM1.38m | 9:52AM1.62m | 10:46PM1.58m | 11:27AM1.71m | 00:33AM1.54m | 1:01PM1.56m | 1:44AM1.28m | |||||||
 |  |  | | | |  |  | |  | | | |  | | | | |  | | |
 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:01 | — | — |
 | 7:35 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:20 | — |
mm | 2 | 1 | — | — | 2 | — | — | — | — | 6 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 14 | 16 | 15 | 14 | 15 | 14 | 15 | 16 | 17 | 16 | 17 | 15 | 13 | 15 | 18 | 17 | 18 | 18 |
Feels °C | 11 | 10 | 9 | 10 | 9 | 7 | 9 | 7 | 9 | 10 | 12 | 11 | 13 | 11 | 11 | 12 | 17 | 17 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | — | SW 6 | SW 6 | N 5 | — | — | — | — | — | — | — | — | — | SW 7 | NW 4 | NW 4 | — | SW 5 | SW 4 | — |
| kJ | — | 13 | 6 | 12 | — | — | — | — | — | — | — | — | — | 46 | 13 | 1 | — | 10 | 5 | — |
Swell 2 Height (m) Direction Period (s) | — | SW 11 | SW 11 | W 11 | — | — | — | — | — | — | — | — | — | — | S 14 | SW 14 | — | — | — | — |
| kJ | — | 5 | 5 | 2 | — | — | — | — | — | — | — | — | — | — | 4 | 8 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 13 | S 13 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | — |
Wind waves Height (m) Direction Period (s) | W 5 | NW 5 | NW 5 | W 4 | SW 5 | WSW 6 | W 6 | W 6 | WSW 5 | SW 6 | SW 7 | SW 7 | SW 7 | WNW 5 | SSW 6 | SW 5 | SW 5 | — | — | SSW 2 |
| kJ | 85 | 61 | 68 | 18 | 141 | 188 | 180 | 133 | 82 | 326 | 248 | 301 | 135 | 33 | 26 | 49 | 53 | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 620 | 174 | 175 | 259 | 283 | 284 | 543 | 190 | 259 | 508 | 508 | 283 | 46 | 46 | 46 | 253 | 253 | 182 | 242 | 180 |
Best forecast wave conditions in Anglesy | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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