Surf Forecasts:
Rhosneigr surf forecast from 7 Aug 2026:
- Most powerful swell: Saturday 8 Aug, 1PM (local time) - 2.5ft (0.7m), 4s period, SSW swell with 12 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 0.7m 4s and forecast to arrive on Saturday (Aug 08) at 1PM. 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 Friday (Aug 14) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Sat 8th Aug) | 2.5ft (0.7m) 4s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Right, let’s have a proper look at the Rhosneigr forecast, yeah? I’ve got to be straight with you – it’s looking pretty grim for the next stretch. We’ve got a long, flat spell ahead, so don’t be in a rush to dig out the board.
The whole window starts off with a whole lot of nothing. From now until the 18th, we’re looking at swell heights barely pushing past 2ft, and most of the time it’s smaller. The energy is dead – we’re talking single-digit readings for the combined energy, like 17 (weak) on the 7th, dropping right down to 1 or 2 (weak) on several days. It's just a lake out there. The winds are mostly onshore or cross-onshore, which would make a mess of even the smallest waves anyway. There’s a bit of glass on the 11th morning, but with next to nothing on offer, it doesn’t matter one bit. This is a long, flat, and frustrating gap we’re in.
Now, over a week away, things finally start to rumble. The first real sign of life is on Tuesday the 19th. The swell jumps up to a more respectable 4ft, and the combined energy hits 168 (moderate). That’s more like it. The wind is offshore from the NNE, which is going to make it clean. It’s still only a 6-second period, so it’ll be a bit crumbly, but it’s surfable. The water is a touch warmer than usual for this time of year, so that’s a small bonus.
But the standout is the Friday the 21st. We’ve got a proper pulse of swell coming in from the WNW, pushing 6ft. The energy jumps to 221 (strong), so there’s some real power behind it. The period is still short at 6 seconds, so it’ll be a bit bumpy, and the wind is due to swing onshore in the afternoon. But the morning looks like the pick, with a light cross-on breeze. This is a heavy, powerful wave for Rhosneigr though, and at that size, it’s not for the faint-hearted. This is the one to watch, but it’s a long way off, so treat it as promising, not a sure thing.
The following Saturday the 22nd cleans up with a light offshore breeze, but the swell has already backed off to 2ft. A bit of a come-down after the day before.
So, there you have it. A long wait, a brief window of proper surf on the 19th, and one bigger, more powerful day on the 21st. Keep your eyes on that Friday.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Sun afternoon, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Tue afternoon, min 15°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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 4 | SW 5 | SW 4 | SSW 4 | SW 4 | SW 4 | SW 12 | SW 12 | SW 6 | SW 6 | SSW 6 | SW 7 | SW 6 | SW 6 | S 11 | SW 12 | SSW 4 | SSW 3 | SW 3 | SW 8 | S 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 6 | 8 | 11 | 7 | 7 | 5 | 6 | 1 | 1 | 3 | 2 | 2 | 1 | 3 | 5 | 4 | 3 | 3 | 3 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | on | cross-on | on | on | cross | cross | cross | off | glassy | cross-on | cross | cross-on | cross-on | cross-on | on | on | on |
High Tide | 4:28PM3.12m | 5:06AM3.20m | 5:53PM3.16m | 6:34AM3.25m | 7:10PM3.38m | 7:48AM3.43m | 8:14PM3.71m | 8:49AM3.66m | 9:07PM4.05m | 9:40AM3.86m | 9:54PM4.35m | 10:25AM4.00m | 10:38PM4.54m | ||||||||
Low Tide | 10:55AM1.10m | 11:32PM1.22m | 12:19PM1.13m | 1:01AM1.07m | 1:38PM0.97m | 2:14AM0.73m | 2:42PM0.68m | 3:13AM0.33m | 3:34PM0.38m | 4:04AM-0.04m | 4:20PM0.13m | 4:50AM-0.29m | 5:04PM-0.02m | ||||||||
 | |  |  | | |  | | | | |  | | | | | | | | | | |
 | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | — | 9:01 | — | — | 9:00 | — | 8:59 | — | — | 8:57 | — | — | 8:54 | — | — | 8:52 | — | — | 8:51 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 15 | 17 | 17 | 16 | 17 | 19 | 18 | 16 | 18 | 17 | 22 | 24 | 23 | 24 | 24 | 20 | 18 | 20 | 19 |
Feels °C | 14 | 14 | 12 | 14 | 13 | 13 | 16 | 18 | 18 | 13 | 15 | 15 | 20 | 22 | 22 | 20 | 20 | 17 | 19 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | SW 4 | WNW 3 | SW 12 | SW 11 | S 11 | SW 7 | SW 6 | SW 6 | — | SW 4 | SSW 6 | SW 6 | SW 6 | SW 6 | SW 6 | SW 12 | SSW 4 | SW 9 | SSW 3 | SSW 3 | SW 7 |
| kJ | 4 | 1 | 5 | 5 | 2 | 2 | 2 | 1 | — | 1 | 3 | 1 | 2 | 1 | 1 | 5 | 3 | 3 | 1 | 1 | 2 |
Swell 2 Height (m) Direction Period (s) | NW 3 | S 12 | W 12 | — | — | S 11 | SW 12 | SW 12 | SW 6 | SW 6 | S 8 | SW 7 | — | — | S 11 | S 6 | SW 10 | W 5 | SW 8 | SW 8 | SW 4 |
| kJ | 2 | 3 | 3 | — | — | 2 | 5 | 6 | 1 | 1 | 1 | 2 | — | — | 3 | 1 | 4 | 1 | 3 | 3 | 1 |
Swell 3 Height (m) Direction Period (s) | SW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 6 | — | — | — | — | S 11 |
| kJ | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 5 | SW 4 | SSW 4 | SW 4 | SW 4 | SW 3 | SSW 3 | — | — | — | — | — | — | — | SSW 3 | — | SSW 3 | SW 3 | WSW 3 | — |
| kJ | 5 | 6 | 8 | 11 | 7 | 7 | 3 | 1 | — | — | — | — | — | — | — | 3 | — | 3 | 2 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 259 | 259 | 253 | 253 | 253 | 259 | 259 | 259 | 259 | 253 | 283 | 257 | 277 | 313 | 235 | 230 | 299 | 174 | 187 | 299 | 174 |
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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