Surf Forecasts:
Rhosneigr surf forecast from 17 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 4.5ft (1.3m), 6s period, SW swell with 132 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 1.3m 6s and forecast to arrive on Wednesday (Aug 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 1.1m 5s period and expected on Thursday (Aug 20) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 19th Aug) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s cooking for Rhosneigr over the next couple of weeks.
Straight up, I’ve got to be honest with you – this is a tough run. The whole 16-day window is a bit of a write-off for decent waves. The first recommendation doesn’t even pop up because the surf is just too poor to get stoked about. We’re looking at a long gap of flat, weak, or messy conditions right through until the end of the month. You’d be better off checking the tide pools or going for a long walk.
The first hint of anything with a bit of kick shows up on the morning of Wednesday, 28 August. Even then, it’s nothing to write home about. The swell bumps up to 4 ft from the SW with a period of 8 seconds, and the combined energy is moderate (211). The wind’s coming from the S at 6 mph, which is a light cross-onshore – not ideal, but it’s the best we’ll see for a while. It’s still flagged as poor surf though, so keep your expectations low.
The only other pulse that might get your attention is on Sunday, 30 August. The swell jumps to 7 ft from the SSW, but the period is a short 6 seconds and the wind is a moderate cross-onshore from the W at 12 mph. The energy is strong (266), but that short period and choppy wind mean it’s going to be lumpy and messy. This is pushing into expert-only territory size-wise, but the quality just isn’t there for a good paddle session. For a beach break, that combo of strong wind and short-period swell might actually be more interesting for the kite surfers than us.
Honestly, for the whole 16 days, there’s nothing that stands out as a true winner. The water temp is running at 65°F, which is much warmer than normal for this time of year – a good 4°F above average – so at least you won’t be freezing your toes off if you do decide to go for a splash, but the waves are just not cooperating.
Stay patient, mates. The surf will turn around eventually.
Rusty
Short Range ForecastLight rain (total 9mm), mostly falling on Mon night. Very mild (max 18°C on Tue afternoon, min 14°C on Tue night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Very mild (max 16°C on Thu morning, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 5 | SW 5 | SW 5 | W 4 | SW 6 | WSW 4 | WSW 5 | SW 5 | SW 6 | SW 6 | SW 6 | SW 14 | SW 14 | SW 13 | SW 13 | SW 15 | SW 15 | SW 15 | SW 14 | WNW 4 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 4 | 44 | 40 | 21 | 24 | 87 | 103 | 71 | 20 | 8 | 8 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 7 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | on | cross-on | on | on | cross | off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off |
High Tide | 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 | 5:38AM2.76m | 6:19PM2.84m | 7:04AM2.82m | 7:32PM3.02m | ||||||||
Low Tide | 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 | 12:20PM1.61m | 1:12AM1.48m | 1:41PM1.46m | 2:17AM1.25m | ||||||||
 | |  |  | |  | |  | | | |  |  | | | | | | | | | |
 | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — |
 | — | 8:42 | — | — | 8:39 | — | — | 8:37 | — | — | 8:36 | — | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — |
mm | — | — | 3 | — | — | — | — | 3 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 16 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 14 | 14 | 16 | 14 | 15 | 15 | 14 | 14 | 16 | 15 |
Feels °C | 16 | 16 | 15 | 13 | 15 | 14 | 11 | 13 | 13 | 11 | 11 | 11 | 10 | 13 | 11 | 10 | 11 | 12 | 12 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 5 | SW 5 | — | — | NW 4 | — | SW 16 | S 15 | SW 6 | SW 6 | SW 6 | SW 6 | N 4 | W 3 | SW 13 | SW 15 | NNW 4 | SW 15 | SW 14 | NNW 4 | — |
| kJ | 5 | 4 | — | — | 9 | — | 10 | 5 | 71 | 20 | 6 | 1 | 9 | 1 | 7 | 8 | 6 | 8 | 8 | 6 | — |
Swell 2 Height (m) Direction Period (s) | — | NW 3 | — | — | — | — | — | — | SW 16 | SW 15 | SW 14 | SW 14 | SW 5 | SW 13 | — | — | SW 15 | SW 12 | — | SW 14 | SW 14 |
| kJ | — | 2 | — | — | — | — | — | — | 10 | 8 | 8 | 8 | 1 | 7 | — | — | 8 | 6 | — | 7 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 5 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 3 | WNW 3 | SW 5 | W 4 | SW 6 | WSW 4 | WSW 5 | SW 5 | WNW 4 | N 5 | N 5 | N 4 | WNW 3 | NNW 4 | N 4 | NNW 5 | WNW 3 | NNW 4 | NW 4 | WNW 4 | — |
| kJ | 4 | 2 | 44 | 40 | 21 | 24 | 87 | 103 | 14 | 45 | 37 | 11 | 2 | 11 | 33 | 23 | 2 | 10 | 22 | 5 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 256 | 295 | 543 | 46 | 519 | 259 | 259 | 242 | 183 | 175 | 187 | 174 | 174 | 283 | 271 | 271 | 317 | 211 | 262 | 271 | 271 |
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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