Surf Forecasts:
Rhosneigr surf forecast from 8 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 4PM (local time) - 7ft (2.2m), 7s period, SW swell with 400 kJ wave energy.
Best Forecast Surf Conditions for Rhosneigr this week:
The most powerful waves expected at Rhosneigr in the next 16 days are 2.2m 7s and forecast to arrive on Thursday (Sep 10) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Wednesday (Sep 09) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Thu 10th Sep) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Well, folks, it’s Rusty here, and I’ve got to be straight with you: the next couple of weeks are looking pretty grim for a proper surf. We’ve got a lot of onshore and cross-onshore wind, short-period slop, and very little in the way of clean, rideable waves. It’s one of those stretches where you might be better off waxing the kiteboard or just staring at the ocean from the pub.
The first real window we’re looking at is around Tuesday the 8th. There’s some swell on the chart, coming in at 4.6ft, but it’s from the WNW with a short 5-second period, and it’s being chopped up by a fresh 30 km/h cross-onshore. The combined swell energy is weak at 113. Honestly, it’s going to be lumpy and uninviting. Not the kind of day you tell your mates about.
Wednesday the 9th drops right off. We’re talking ankle-biters at 1.3ft with a bit of a cross-shore breeze in the morning and a light cross-onshore in the afternoon. It’s clean-ish, but there’s just nothing to push you along. Thursday the 10th sees the swell jump back up, but it’s messy. The wind swings strong from the SSW, hitting 40 km/h in the afternoon, making the 7.2ft of swell an absolute washing machine. The energy is moderate (400), but the quality is zero. That’s a day for the windsurfers, not us paddle surfers.
Friday the 11th and Saturday the 12th keep the pattern of poor conditions. Saturday morning brings another 6.2ft of short-period swell and a strong 40 km/h cross-onshore again – pure chaos, another miss. By Sunday the 13th, the wind finally eases off, and we get a glimmer. The swell is small at 2.3ft with a light cross-offshore breeze, so it *might* be clean. But with a period of 6 seconds, it’s going to be weak and mushy. If you’re desperate, you could get a few soft ones, but it’s barely worth the paddle.
The following week is the real kick in the teeth. From Monday the 14th through to Wednesday the 23rd, the surf just dies. The swell drops to 0.3ft, with most days having absolutely nothing on offer. There are long gaps here – days and days with no surf. The wind is mostly light or moderate, and we even get some glassy periods on Sunday the 20th and Monday the 21st with a swell period that jumps up to 13-14 seconds. That long period is a tease. It’s a sign of energy out there, but none of it is reaching our shores. A 0.3ft wave with a 14-second period is just a slight bump. This is a blank run, pure and simple. It’s the kind of stretch that’s more normal for this area when the Atlantic just refuses to co-operate, and it tends not to stay this poor for long. Forecasts can change, so keep an eye out.
There’s nothing here that’s a standout. If I had to pick the least-bad option, it’s maybe that Sunday the 13th morning for a grovel, but that’s it. The water temp is running a touch warmer than usual for the time of year at 62.6°, but that’s about the only noteworthy thing right now.
So, in short: keep the board in the car, but don’t get your hopes up. There will be better days.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu afternoon. Very mild (max 17°C on Thu afternoon, min 13°C on Tue night). Winds increasing (light winds from the WNW on Wed afternoon, strong winds from the SSW by Thu morning). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Very mild (max 17°C on Sat afternoon, min 13°C on Fri night). Winds increasing (light winds from the WSW on Fri afternoon, strong winds from the SSW by Sat morning). | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | WNW 5 | SW 6 | SW 8 | SW 8 | SW 4 | SSW 5 | SW 7 | SW 7 | SW 7 | SW 7 | SSW 3 | SW 6 | SW 6 | SW 7 | SW 6 | SW 6 | SSW 6 | SSW 4 | SSW 4 | SW 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 109 | 10 | 15 | 14 | 21 | 130 | 400 | 158 | 38 | 22 | 10 | 284 | 188 | 100 | 39 | 17 | 12 | 25 | 12 | 138 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | cross-on | cross-off | on | cross-on | cross-on | on | cross-on |
High Tide | 8:11PM3.77m | 8:48AM3.63m | 8:58PM4.11m | 9:29AM3.86m | 9:39PM4.37m | 10:06AM4.03m | 10:17PM4.51m | 10:42AM4.11m | 10:54PM4.52m | 11:16AM4.11m | 11:30PM4.39m | 11:50AM4.02m | 00:07AM4.16m | |||||||
Low Tide | 3:02AM0.22m | 3:19PM0.38m | 3:49AM-0.10m | 4:02PM0.12m | 4:31AM-0.30m | 4:43PM-0.03m | 5:10AM-0.34m | 5:22PM-0.06m | 5:48AM-0.24m | 5:59PM0.01m | 6:23AM-0.01m | 6:35PM0.19m | ||||||||
 |  |  | | |  | |  |  | |  |  | | | | | | | | | |
 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:47 | — | — | 6:48 | — | — |
 | 7:52 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — |
mm | 2 | — | — | — | — | — | 4 | — | — | — | 1 | 2 | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 14 | 14 | 15 | 16 | 17 | 17 | 14 | 15 | 14 | 16 | 17 | 17 | 15 | 15 | 16 | 17 | 17 | 17 |
Feels °C | 10 | 7 | 9 | 11 | 10 | 10 | 15 | 13 | 10 | 12 | 12 | 11 | 13 | 14 | 14 | 14 | 14 | 15 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 10 | SW 6 | SW 8 | N 5 | N 4 | — | — | SW 7 | SW 7 | SW 7 | — | — | — | SW 7 | SW 6 | SW 6 | — | — | — | — |
| kJ | 4 | 10 | 15 | 28 | 1 | — | — | 158 | 38 | 22 | — | — | — | 100 | 39 | 17 | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | SW 11 | SW 6 | SW 8 | — | — | — | — | — | NNW 4 | — | — | — | — | N 4 | N 4 | — | — | — | — |
| kJ | — | 4 | 5 | 14 | — | — | — | — | — | 6 | — | — | — | — | 2 | 1 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | WNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 5 | NW 6 | NNW 6 | W 4 | SW 4 | SSW 5 | SW 7 | — | NW 4 | WNW 4 | SSW 3 | SW 6 | SW 6 | — | — | — | SSW 6 | SSW 4 | SSW 4 | SW 6 |
| kJ | 109 | 224 | 131 | 3 | 21 | 130 | 400 | — | 14 | 2 | 10 | 284 | 188 | — | — | — | 12 | 25 | 12 | 138 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 543 | 340 | 183 | 46 | 233 | 307 | 508 | 169 | 175 | 46 | 174 | 253 | 307 | 94 | 46 | 152 | 233 | 181 | 259 | 187 |
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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