Surf Forecasts:
Rhosneigr surf forecast from 15 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 4AM (local time) - 3.5ft (1.0m), 4s period, WSW swell with 43 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 1.0m 4s and forecast to arrive on Thursday (Aug 20) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Saturday (Aug 22) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Thu 20th Aug) | 3.5ft (1.0m) 4s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright, I’ve given the charts a solid look for our little patch of coast, and I’ll level with you – it’s bleak. We’re looking at a long, flat spell that’ll stretch out for the next 16 days.
For Rhosneigr, the water’s sitting at a warm 64°, which is about 4° warmer than usual for this time of year. That’s pretty unusual. But warm water doesn’t make waves, and we ain’t got none.
The whole 16-day window is a bust. There’s a big gap from now all the way through to the end of the month with zero recommendations. The first record on Saturday, August 15th, shows nothing but a tiny 0.3ft swell with weak combined energy (2). The wind is a cross-off, but with no size, it’s a flat, clean lake.
In the middle of the week, around Monday the 18th and Tuesday the 19th, we see a little bump. The swell height creeps up to 3ft on Wednesday morning the 19th, but it’s a short period wind swell of 4 seconds and the combined energy is still weak (38). The wind is a messy cross-onshore, making it choppy and unrideable.
We do see a stretch of clean conditions with offshore winds from the 22nd to the 27th, but again, the swell is nothing more than 0.3ft. It’s clean as a whistle, but there’s nothing to ride. A couple of mornings, like Thursday the 27th, are glassy, but with 0.3ft of swell, it's just a mirror for the sky.
The final few days, the 29th and 30th, the wind turns onshore and the swell tries to pick up a tiny bit, but we’re talking about 2ft with a short period and poor conditions. There is simply no surf worthy of a paddle out. The whole setup looks far more interesting for a kite than a surfboard right now.
Hang in there. The forecasts can always change, but for now, it’s a dry spell.
Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Mon night. Very mild (max 17°C on Mon night, min 14°C on Sat night). Winds increasing (calm on Sat night, fresh winds from the S by Mon night). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed night. Very mild (max 17°C on Tue afternoon, min 13°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | W 8 | SW 6 | SW 6 | — | SW 5 | SSW 3 | WNW 4 | SW 5 | SW 4 | SW 5 | WSW 6 | NW 4 | W 4 | SW 4 | WSW 4 | SW 5 | SW 4 | SW 4 | SW 5 | SW 13 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 1 | 1 | 0 | 1 | 2 | 5 | 4 | 40 | 13 | 37 | 15 | 28 | 12 | 31 | 21 | 9 | 8 | 7 | 7 | 7 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-on | on | cross-on | cross | on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-off | cross-off | off | off |
High Tide | 11:46AM4.02m | 00:00AM4.50m | 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 | ||||||||
Low Tide | 6:25PM0.02m | 6:55AM-0.16m | 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 | ||||||||
 | |  |  | |  | | |  | | | | | | | | | |  |  |  | |
 | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:32 | — |
mm | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | 3 | — | — | 1 | 4 | 1 | 7 |
Temp °C | 15 | 16 | 15 | 16 | 15 | 16 | 15 | 16 | 17 | 16 | 17 | 17 | 16 | 16 | 16 | 15 | 16 | 15 | 15 | 16 | 13 |
Feels °C | 11 | 13 | 13 | 15 | 13 | 16 | 13 | 14 | 15 | 13 | 14 | 13 | 11 | 11 | 13 | 12 | 14 | 14 | 12 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 6 | SW 6 | — | SW 5 | — | SSW 4 | NW 3 | — | SW 5 | — | SW 5 | SW 16 | NW 4 | SW 16 | SW 5 | NW 4 | SW 4 | SW 5 | SW 5 | SW 13 |
| kJ | 1 | 1 | 1 | — | 1 | — | 2 | 3 | — | 11 | — | 4 | 10 | 3 | 10 | 21 | 3 | 3 | 4 | 1 | 7 |
Swell 2 Height (m) Direction Period (s) | W 8 | — | — | — | — | — | — | SW 5 | — | SW 6 | NW 4 | — | — | S 15 | — | SW 15 | SW 14 | SSW 5 | SW 14 | SW 13 | SW 5 |
| kJ | 1 | — | — | — | — | — | — | 4 | — | 7 | 8 | — | — | 5 | — | 8 | 8 | 2 | 7 | 7 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | S 16 | — | — | — | — | — | W 14 | SW 14 | — | — | S 16 |
| kJ | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | 4 | 8 | — | — | 5 |
Wind waves Height (m) Direction Period (s) | N 4 | NNW 4 | N 4 | — | — | SSW 3 | WNW 4 | — | SW 4 | NW 4 | WSW 6 | NW 4 | W 4 | SW 4 | WSW 4 | WNW 4 | SW 4 | — | NNW 4 | NNW 4 | NNW 4 |
| kJ | 12 | 5 | 1 | — | — | 2 | 5 | — | 40 | 13 | 37 | 15 | 28 | 12 | 31 | 16 | 9 | — | 14 | 10 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 318 | 444 | 253 | 253 | 292 | 256 | 256 | 295 | 392 | 519 | 519 | 259 | 282 | 259 | 277 | 187 | 508 | 159 | 189 | 221 | 182 |
Best forecast wave conditions in Anglesy | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rhosneigr surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest