Surf Forecasts:
Rhosneigr surf forecast from 5 Sep 2026:
- Most powerful swell: Monday 7 Sep, 4PM (local time) - 7ft (2.1m), 6s period, SW swell with 320 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 2.1m 6s and forecast to arrive on Monday (Sep 07) at 4PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Sep 12) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Mon 7th Sep) | 7ft (2.1m) 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 cookin’. I’ve got the full 16-day picture for us, and I’ll be straight with you – it’s a tough one. We’ve got a long stretch of nothing special, but let’s walk through it.
We start off with a real dud. From Saturday the 5th right through to the end of the first week, there’s not a single session worth paddling out for. The wind is either onshore or cross-onshore, the swell is short-period and weak, and the wave energy is mostly in the double digits. For example, the combined energy on Saturday morning is just 69 (weak). It’s choppy, lumpy, and just plain messy. Sunday the 6th is no better with a fresh cross-onshore breeze and only 4ft to 5ft of weak, short-period swell. Monday the 7th sees a 5ft swell but with a strong onshore wind and a combined energy of 168 (moderate), but the wind is all wrong. By Tuesday the 8th, we get a bit more size – 7ft from the WSW – with a combined energy of 333 (moderate), but it’s a strong cross-onshore breeze and messy. That’s more of a kite-surfing setup than a paddle session. The whole first week is a write-off for quality surfing.
Then we hit a real flat spell. From Saturday the 12th onwards, the swell just drops off a cliff. The morning of the 12th is glassy, but the swell is only 1ft. The afternoon gets a clean offshore wind from the NE, but the swell is a pathetic 1.0ft. Sunday the 13th is the same story – clean offshore winds, but the swell is 0.3ft to 1.0ft. The combined energy is in the single digits. Monday the 14th and Tuesday the 15th are flat with barely a ripple. The best you can say is the water is clean, but there’s nothing to ride.
The second week doesn’t get much better. From Wednesday the 16th through to Friday the 18th, the wind picks up again, but the swell stays tiny or non-existent. Friday the 18th is blown out with near gale-force winds and zero swell. Saturday the 19th goes glassy again, but again, no swell. The final day, Sunday the 20th, shows a tiny 2ft swell from the SSW with a clean offshore wind, but with a period of 3 seconds, it’s barely a ripple.
The bottom line: There is no standout session in this 16-day window. The only note is that the water temp is about average for the time of year at Rhosneigr (Anglesey). The first week is a complete bust with poor wind and mediocre swell, and the second week is mostly flat with a few glassy, but empty, days. It’s a blank run for this area, and it’s not uncommon for it to go quiet like this. Forecasts can change, but as it stands, leave your board in the car.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Sun morning. Very mild (max 19°C on Sun afternoon, min 13°C on Mon night). Winds increasing (light winds from the WSW on Sat morning, strong winds from the SW by Mon afternoon). | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Very mild (max 18°C on Thu afternoon, min 13°C on Tue night). Mainly strong winds. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 5 | SW 6 | SSW 4 | SSW 5 | SSW 6 | SW 6 | SW 14 | SW 6 | SW 6 | WSW 6 | W 6 | NW 6 | SW 6 | WSW 4 | SW 4 | SW 6 | SW 7 | WSW 4 | WNW 6 | WNW 6 | NW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 49 | 16 | 35 | 88 | 134 | 147 | 52 | 320 | 275 | 263 | 144 | 123 | 11 | 8 | 12 | 231 | 127 | 62 | 161 | 148 | 96 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross | cross | on | on | on | on | cross-on | cross | cross-on | cross |
High Tide | 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 | 9:29AM3.86m | 9:39PM4.37m | 10:06AM4.03m | 10:17PM4.51m | ||||||||
Low Tide | 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 | 4:02PM0.12m | 4:31AM-0.30m | 4:43PM-0.03m | ||||||||
 |  |  |  | |  | |  | | | |  | | | | | | |  | | | |
 | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — |
 | — | 7:59 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — |
mm | — | — | 2 | 3 | — | 1 | — | 3 | 1 | — | — | — | — | — | 8 | — | 1 | — | — | — | — |
Temp °C | 14 | 15 | 15 | 18 | 19 | 17 | 15 | 16 | 15 | 14 | 16 | 14 | 14 | 15 | 16 | 17 | 18 | 16 | 15 | 16 | 15 |
Feels °C | 11 | 11 | 11 | 11 | 13 | 14 | 9 | 10 | 10 | 7 | 10 | 8 | 10 | 10 | 10 | 12 | 13 | 10 | 8 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 7 | WNW 4 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 | — | — | — | SW 11 | SW 6 | SW 6 | N 5 | N 4 | — | — | — | SW 6 | — | SW 6 |
| kJ | 7 | 3 | 7 | 7 | 6 | 6 | 52 | — | — | — | 5 | 26 | 11 | 17 | 1 | — | — | — | 40 | — | 16 |
Swell 2 Height (m) Direction Period (s) | SW 14 | NNW 5 | — | — | — | — | NW 4 | — | — | — | W 10 | S 11 | — | — | SW 8 | — | — | — | — | — | SW 8 |
| kJ | 7 | 5 | — | — | — | — | 2 | — | — | — | 2 | 2 | — | — | 3 | — | — | — | — | — | 9 |
Swell 3 Height (m) Direction Period (s) | SW 14 | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | SW 6 | SSW 4 | SSW 5 | SSW 6 | SW 6 | SW 4 | SW 6 | SW 6 | WSW 6 | W 6 | NW 6 | NW 5 | WSW 4 | SW 4 | SW 6 | SW 7 | WSW 4 | WNW 6 | WNW 6 | NW 5 |
| kJ | 49 | 16 | 35 | 88 | 134 | 147 | 52 | 320 | 275 | 263 | 144 | 123 | 58 | 8 | 12 | 231 | 127 | 62 | 161 | 148 | 96 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 242 | 181 | 307 | 343 | 221 | 315 | 543 | 169 | 283 | 543 | 175 | 283 | 242 | 253 | 283 | 305 | 277 | 543 | 543 | 175 |
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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