Surf Forecasts:
Rhosneigr surf forecast from 14 Sep 2026:
- Most powerful swell: Saturday 19 Sep, 7PM (local time) - 6.5ft (2.0m), 7s period, SW swell with 363 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 2.0m 7s and forecast to arrive on Saturday (Sep 19) 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 1.6m 6s period and expected on Wednesday (Sep 16) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Sat 19th Sep) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s talk about Rhosneigr. Looking at the next 16 days, the first week is a total write-off—no surf worth a damn until the end of the 27th of September. That’s a big gap of several days, so don’t rush to load up the boards.
Water temp is about 62°F, a touch warmer than normal for this time of year, but that’s all the good news I’ve got.
The wind’s the villain here. From the 14th through the 23rd, it’s almost always cross-on or onshore, mostly a fresh breeze making it lumpy or choppy. Swell heights hit 5ft to 7ft at times, but it’s all short-period junk at 5 to 6 seconds, with weak to moderate energy (topping out at 340 combined). On the 18th of September Friday afternoon, it’s an onshore strong breeze with 6ft swell and 178 energy – that’s strictly kite-surfing territory, not for paddling.
From the 23rd of September, it gets glassy or clean-looking, but the swell just dies. You’re looking at 0.3ft to 2ft, with a period spike to 18 seconds on the 24th afternoon, but the energy’s laughable (single digits to 17). The 26th morning has a glassy 2ft from the SSE, but it’s 4-second windswill.
The only chance we see is right at the tail end: 28th of September Monday morning has 4ft from the WSW at 5 seconds with 94 energy – but it’s cross-on wind. Still poor conditions all the way. There’s no standout; just sit this one out.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Mon night. Very mild (max 17°C on Mon afternoon, min 13°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri afternoon. Very mild (max 17°C on Fri night, min 13°C on Thu night). Winds decreasing (fresh winds from the SSW on Fri afternoon, light winds from the W by Sat night). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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 5 | SSW 5 | SW 6 | WSW 6 | WSW 5 | NW 5 | SW 6 | NW 5 | SW 5 | WSW 5 | WSW 5 | W 5 | WSW 5 | SW 6 | SW 6 | SW 6 | SSW 6 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 22 | 88 | 311 | 148 | 87 | 110 | 6 | 40 | 99 | 117 | 78 | 131 | 69 | 178 | 104 | 162 | 340 | 120 | 34 | 15 | 15 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | on | cross-on | cross-on | cross | on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 3:54PM2.78m | 5:10AM2.63m | 5:52PM2.79m | ||||||||
Low Tide | 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 | 9:52AM1.62m | 10:46PM1.58m | 11:27AM1.71m | 00:33AM1.54m | ||||||||
 | |  |  |  | | |  | | | |  | |  | | | | | | | | |
 | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — |
 | — | 7:37 | — | — | 7:35 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — |
mm | — | — | 5 | — | 1 | 2 | 1 | — | 3 | — | — | — | — | 5 | 1 | — | — | — | — | — | — |
Temp °C | 16 | 17 | 17 | 14 | 16 | 15 | 13 | 14 | 15 | 14 | 15 | 14 | 14 | 15 | 17 | 15 | 17 | 16 | 17 | 18 | 18 |
Feels °C | 15 | 12 | 13 | 8 | 13 | 9 | 8 | 9 | 10 | 8 | 10 | 8 | 8 | 10 | 13 | 11 | 15 | 15 | 14 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | — | SW 12 | — | — | — | SW 6 | SW 6 | — | — | — | — | — | — | — | — | — | — | SW 6 | SW 6 | SW 6 | SW 6 |
| kJ | — | 6 | — | — | — | 12 | 6 | — | — | — | — | — | — | — | — | — | — | 120 | 34 | 15 | 15 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 11 | SW 11 | W 11 | — | — | — | — | — | — | — | — | — | — | — | S 14 | — |
| kJ | — | — | — | — | — | 2 | 5 | 2 | — | — | — | — | — | — | — | — | — | — | — | 4 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 14 | SW 14 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 8 | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | SSW 5 | SW 6 | WSW 6 | WSW 5 | NW 5 | NW 6 | NW 5 | SW 5 | WSW 5 | WSW 5 | W 5 | WSW 5 | SW 6 | SW 6 | SW 6 | SSW 6 | — | — | — | — |
| kJ | 22 | 88 | 311 | 148 | 87 | 110 | 136 | 40 | 99 | 117 | 78 | 131 | 69 | 178 | 104 | 162 | 340 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 253 | 253 | 301 | 543 | 543 | 340 | 175 | 259 | 277 | 190 | 832 | 175 | 253 | 285 | 259 | 221 | 46 | 46 | 253 | 259 | 259 |
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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