Surf Forecasts:
Rhosneigr surf forecast from 11 Aug 2026:
- Most powerful swell: Thursday 13 Aug, 10PM (local time) - 3.5ft (1.0m), 5s period, SW swell with 45 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 5s and forecast to arrive on Thursday (Aug 13) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 15) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Thu 13th Aug) | 3.5ft (1.0m) 5s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright, let’s get real about Rhosneigr (Wales). Honestly, for the next few weeks, it’s a bit of a tough stretch. The forecast shows a real flat spell for the first week and a half. From Tuesday 11th August right through to Thursday 20th, it’s pretty much a write-off – tiny waves, mostly under 2 feet, and the wind is rarely doing us any favours. There’s a long gap there with hardly any surf worth paddling out for. The water temperature is about what you’d expect for this time of year, nothing unusual.
The first real flicker of hope comes on Friday 21st August. The morning session is the standout in the whole period. We’ve got a 5ft swell rolling in from the W, with a period of 5 seconds. The combined swell energy is moderate at 131, and the wind is a light offshore from the ESE, keeping things clean. It’s not a huge swell, but after the flat spell, it’s the only window that’s surfable. The waves will be ordinary, but at least you can get wet. The afternoon goes downhill with a cross-onshore breeze, so grab the early session.
Saturday 22nd August morning has a bit more size at 4ft from the WNW, but the wind is a cross-on from the SSW at 20 km/h, chopping things up. Not great. After that, it’s back to tiny, messy surf for the rest of the forecast. A few days late in the month, from the 23rd to the 26th, we see some longer period swells (14 seconds) but they’re tiny – 0.3ft. Those long-period groundswells are too small to make anything of, and the wind is onshore or cross-onshore most of the time, so it’s just a messy, flat end to the outlook.
If you’re desperate, Friday 21st morning is your best bet, but don’t expect magic. For the rest of it, it’s a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 20°C on Thu night, min 12°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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 | S 3 | S 11 | SW 12 | SW 12 | SW 10 | SW 3 | SSW 3 | SW 5 | NW 4 | SW 5 | SW 5 | NW 4 | WNW 4 | SW 6 | S 6 | SW 4 | — | — | — | — |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 1 | 2 | 5 | 6 | 4 | 4 | 4 | 45 | 18 | 10 | 5 | 12 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross | cross | glassy | cross | cross | cross-off | cross-off | cross-off | off | off | off | off |
High Tide | 8:49AM3.66m | 9:07PM4.05m | 9:40AM3.86m | 9:54PM4.35m | 10:25AM4.00m | 10:38PM4.54m | 11:07AM4.05m | 11:19PM4.59m | 11:46AM4.02m | 00:00AM4.50m | 12:25PM3.91m | 00:40AM4.27m | 1:04PM3.73m | 1:21AM3.95m | |||||||
Low Tide | 3:34PM0.38m | 4:04AM-0.04m | 4:20PM0.13m | 4:50AM-0.29m | 5:04PM-0.02m | 5:34AM-0.40m | 5:45PM-0.06m | 6:15AM-0.35m | 6:25PM0.02m | 6:55AM-0.16m | 7:05PM0.20m | 7:34AM0.15m | 7:45PM0.46m | ||||||||
 | |  |  | |  | | | |  | |  | | | | |  | | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — |
 | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — | — | 8:49 | — | — | 8:45 | — | — | 8:44 | — | — | 8:42 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — |
Temp °C | 21 | 21 | 20 | 23 | 25 | 23 | 21 | 21 | 20 | 16 | 18 | 17 | 16 | 16 | 16 | 15 | 12 | 15 | 17 | 18 | 16 |
Feels °C | 17 | 18 | 19 | 20 | 22 | 22 | 20 | 20 | 19 | 14 | 15 | 15 | 12 | 13 | 14 | 13 | 10 | 13 | 12 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SW 6 | SSW 3 | SW 12 | SSW 3 | SW 5 | SW 8 | SW 8 | SW 5 | SW 5 | NW 4 | SW 5 | SSW 5 | NNW 4 | — | N 4 | SW 4 | — | — | — | — |
| kJ | 4 | 1 | 1 | 5 | 1 | 1 | 3 | 2 | 45 | 11 | 5 | 5 | 2 | 3 | — | 6 | 1 | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | SW 6 | SW 6 | SW 12 | SW 10 | SW 10 | SW 11 | — | — | — | SW 8 | SW 7 | SW 6 | SW 6 | S 6 | — | — | — | — | — |
| kJ | — | — | 1 | 1 | 6 | 4 | 4 | 4 | — | — | — | 2 | 2 | 1 | 1 | 1 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | S 11 | W 10 | SW 6 | — | — | S 11 | — | — | — | S 10 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 2 | 2 | 1 | — | — | 2 | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | S 3 | — | SSW 3 | — | — | SW 3 | SSW 3 | — | NW 4 | SW 5 | NW 3 | NW 4 | WNW 4 | — | — | N 4 | — | — | — | — |
| kJ | 1 | 1 | — | 3 | — | — | 2 | 4 | — | 18 | 10 | 2 | 12 | 2 | — | — | 3 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 277 | 313 | 159 | 158 | 174 | 174 | 174 | 293 | 187 | 187 | 329 | 159 | 174 | 354 | 283 | 259 | 306 | 305 | 259 | 306 | 262 |
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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