Surf Forecasts:
Rhosneigr surf forecast from 3 Sep 2026:
- Most powerful swell: Thursday 3 Sep, 10PM (local time) - 6ft (1.9m), 7s period, SW swell with 312 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 1.9m 7s and forecast to arrive on Thursday (Sep 03) at 10PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 5s period and expected on Saturday (Sep 05) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Thu 3rd Sep) | 6ft (1.9m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright my friends, Rusty here. Let’s get the bad news out of the way first – this 16-day window at Rhosneigr is a tough sell. I’m not here to sugarcoat it.
We’re stuck in a prolonged run of poor surf. The wind is almost always onshore or cross-onshore, often blowing a fresh breeze, making everything messy and choppy. The combined swell energy stays weak to moderate, like 155 (moderate wave energy) on the 3rd, and it won’t clean up. You’ve got waves from 4 ft to 6 ft (1.3m to 1.7m) but with short periods of 5 to 7 seconds – that’s junk windswell, not real groundswell. The water is 63°F (17°C) – a tad warmer than usual for this time of year, but still not Hawaiian.
We have a dry spell of over a week before anything remotely worthwhile appears. On Saturday, September 12th, there’s a glimmer – a light 6 mph offshore breeze from the east giving clean conditions, with 5 ft (1.6m) of NW swell and a combined energy of 198. The wave comment says it’s surfable, just ordinary. That’s your best bet in the bunch.
Then on Sunday, September 13th, the swell jumps up to 7 ft to 8 ft (2.1m to 2.3m) from the SSW, with the NW energy pushing the combined score to 320, then 486 (strong wave energy). The wind is light cross-shore though, so it’s bumpy, and the period is only 6 to 7 seconds. It’s marginal for paddle surfing – too big for beginners for sure, but the poor shape won't thrill experts either.
After that, it dies fast – tiny glassy waves on the 15th, then basically flat from the 16th onward. This is a lean stretch where the ocean just isn’t cooperating. If you’re kiting, those first few days with 25+ mph onshore wind might be more interesting than surfing.
Don’t waste your petrol for this one unless you’re checking it on the 12th.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Thu night. Very mild (max 18°C on Sun morning, min 13°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Mon night. Warm (max 20°C on Sun afternoon, min 12°C on Mon night). Winds increasing (light winds from the WNW on Mon morning, strong winds from the W by Tue night). | |||||||||||||||||||
Thu 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | ||||||||||||||
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 6 | SW 7 | WSW 5 | SW 5 | W 5 | W 5 | SW 6 | SSW 4 | SSW 5 | SSW 5 | SSW 6 | WSW 5 | SW 5 | WSW 6 | W 6 | WSW 6 | WSW 6 | WSW 6 | SW 6 | SW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 123 | 178 | 168 | 119 | 115 | 49 | 26 | 42 | 44 | 64 | 202 | 59 | 103 | 253 | 298 | 246 | 240 | 193 | 76 | 178 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 2:14AM3.50m | 2:44PM3.26m | 3:24AM3.18m | 4:06PM3.08m | 5:04AM3.02m | 5:48PM3.13m | 6:46AM3.12m | 7:12PM3.41m | 7:58AM3.37m | 8:11PM3.77m | 8:48AM3.63m | 8:58PM4.11m | ||||||||
Low Tide | 8:50PM0.88m | 9:25AM1.02m | 9:57PM1.11m | 10:40AM1.25m | 11:26PM1.19m | 12:11PM1.26m | 00:57AM0.99m | 1:29PM1.03m | 2:07AM0.62m | 2:30PM0.70m | 3:02AM0.22m | 3:19PM0.38m | 3:49AM-0.10m | |||||||
 |  |  |  |  | | |  |  |  | | | | | | |  | | |  | |
 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — |
 | 8:04 | — | — | 8:00 | — | — | 7:59 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:49 | — |
mm | 1 | 13 | — | — | — | — | — | 1 | 1 | — | 1 | — | — | 12 | — | — | — | — | — | 5 |
Temp °C | 17 | 16 | 15 | 17 | 16 | 14 | 14 | 15 | 18 | 20 | 17 | 15 | 15 | 14 | 14 | 15 | 14 | 15 | 16 | 14 |
Feels °C | 13 | 13 | 8 | 11 | 10 | 11 | 10 | 10 | 12 | 15 | 12 | 12 | 10 | 8 | 7 | 8 | 6 | 9 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | — | SW 7 | SW 14 | SW 14 | SW 14 | SW 14 | WNW 4 | SW 13 | SW 13 | SW 13 | SW 12 | WSW 14 | — | — | — | — | — | — | NW 5 | — |
| kJ | — | 178 | 8 | 8 | 8 | 7 | 3 | 7 | 7 | 6 | 6 | 20 | — | — | — | — | — | — | 7 | — |
Swell 2 Height (m) Direction Period (s) | — | NW 4 | — | SW 14 | — | SW 7 | NNW 5 | — | — | — | — | — | — | — | — | — | — | — | NNW 6 | — |
| kJ | — | 3 | — | 8 | — | 7 | 5 | — | — | — | — | — | — | — | — | — | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | SW 14 | — | — | — | SW 14 | SW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 8 | — | — | — | 7 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | WSW 5 | SW 5 | W 5 | W 5 | SW 6 | SSW 4 | SSW 5 | SSW 5 | SSW 6 | WSW 5 | SW 5 | WSW 6 | W 6 | WSW 6 | WSW 6 | WSW 6 | SW 6 | SW 7 |
| kJ | 123 | 167 | 168 | 119 | 115 | 49 | 26 | 42 | 44 | 64 | 202 | 59 | 103 | 253 | 298 | 246 | 240 | 193 | 76 | 178 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 290 | 168 | 340 | 543 | 175 | 46 | 242 | 181 | 233 | 183 | 278 | 169 | 259 | 259 | 601 | 543 | 551 | 381 | 259 | 253 |
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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