Surf Forecasts:
Rhosneigr surf forecast from 7 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 7PM (local time) - 7ft (2.2m), 7s period, SW swell with 412 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 Saturday (Sep 12) 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 1.7m 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 | 7PM (Sat 12th Sep) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Rhosneigr over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about what's on offer at Rhosneigr over the next couple of weeks.
Rhosneigr is a beginner-friendly spot that's fairly consistent and exposed to the SW, which is its optimum swell direction. The water temperature is 63°, which is a touch warmer than normal for this time of year.
Honestly, the first week is a write-off. From Monday the 7th right through to the end of the following weekend, the surf is just poor. We've got a mix of onshore and cross-onshore winds from the SW and WNW, with speeds often hitting 18 to 25 mph, making everything lumpy and messy. There's a bit of swell on the 10th and 12th of September, with a 6ft SW and 7ft SSW respectively, but it's all blown out. The combined swell energy on the 10th afternoon is 176 (moderate), and on the 12th afternoon it jumps to 406 (strong), but the wind is a strong breeze onshore, so it's just not worth it. The period is short, around 4 to 6 seconds, so there's no real shape.
There's a real gap of about ten days of poor conditions. The first sign of anything decent doesn't show up until Thursday the 17th of September. That morning brings a 7ft SSW swell with a period of 6 seconds, combined energy of 333 (strong), and a light SE cross-shore breeze. The score is a 1 out of 10, so it's marginal, but it's the best we've seen. The afternoon improves slightly with a 6ft SW swell and a period of 7 seconds, combined energy jumping to 603 (very strong), and a light SE breeze. It's still a cross-shore, so it's not perfect, but it's the cleanest option in a long time. This is more for the experienced surfers, as that 7ft is a bit much for beginners.
The real standout, and the one to circle on the calendar, is Saturday the 19th of September. The morning is looking clean with a 6ft SW swell, period of 6 seconds, combined energy of 236 (strong), and a light ESE cross-offshore breeze. That's a solid, clean swell with light winds, and it's a 2 out of 10 score, which is easily the best of the whole period. This is the one. It's not a classic groundswell, but the period is still decent enough for a point break or reef setup. The afternoon turns more cross-onshore, so get it early.
So, the long and short of it: the first week and a half is a complete bust. The only real chance to get wet is on the morning of the 19th of September. That's the highlight, but it's a long way off, so keep an eye on the forecasts. After that, it drops off again into tiny, weak surf.
~ Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Very mild (max 16°C on Mon afternoon, min 13°C on Mon night). Mainly strong winds. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Sat afternoon. Very mild (max 18°C on Sat night, min 14°C on Thu night). Winds increasing (calm on Fri afternoon, strong winds from the SSW by Sat afternoon). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 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 14 | SW 5 | SW 7 | W 5 | WNW 5 | SW 6 | SW 7 | SW 7 | SW 4 | SW 4 | SSW 6 | SW 6 | SW 6 | SW 6 | SW 3 | SSW 5 | SSW 6 | SW 7 | SW 7 | SSW 6 | SSW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 94 | 163 | 81 | 105 | 5 | 19 | 14 | 11 | 40 | 176 | 120 | 33 | 19 | 12 | 116 | 406 | 173 | 44 | 35 | 46 |
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 | cross | on | on | cross-on | on | on | cross | cross | cross-on | cross-on | cross-on | on | cross | cross-on | cross-on |
High Tide | 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 | 10:42AM4.11m | 10:54PM4.52m | 11:16AM4.11m | 11:30PM4.39m | ||||||||
Low Tide | 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 | 5:10AM-0.34m | 5:22PM-0.06m | 5:48AM-0.24m | 5:59PM0.01m | ||||||||
 |  |  |  | |  | | | | | |  | | |  |  |  | | | | | |
 | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:47 | — | — |
 | — | 7:53 | — | — | 7:52 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — |
mm | — | 1 | 2 | — | — | — | — | — | — | — | — | 2 | — | — | — | 1 | 6 | 1 | 1 | — | — |
Temp °C | 15 | 16 | 14 | 14 | 16 | 14 | 13 | 14 | 15 | 16 | 16 | 17 | 14 | 15 | 14 | 14 | 15 | 18 | 16 | 16 | 15 |
Feels °C | 11 | 11 | 10 | 7 | 9 | 7 | 8 | 11 | 11 | 10 | 10 | 14 | 10 | 13 | 11 | 7 | 8 | 15 | 14 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 14 | — | SW 7 | SW 12 | SW 11 | SW 6 | SW 7 | N 5 | SSW 7 | — | — | SW 6 | SW 6 | SW 6 | — | — | — | SW 7 | SW 7 | NNW 5 | — |
| kJ | 33 | — | 163 | 5 | 5 | 5 | 19 | 18 | 5 | — | — | 120 | 33 | 19 | — | — | — | 173 | 44 | 4 | — |
Swell 2 Height (m) Direction Period (s) | — | — | SW 12 | SW 11 | SW 10 | SW 10 | — | W 4 | N 4 | — | — | — | — | — | — | — | — | — | NW 4 | — | — |
| kJ | — | — | 6 | 5 | 4 | 4 | — | 2 | 1 | — | — | — | — | — | — | — | — | — | 11 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 7 | — | — | — | — | — | — | — | — | — | — | — | S 13 | — |
| kJ | — | — | — | — | — | — | — | 14 | — | — | — | — | — | — | — | — | — | — | — | 3 | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | SW 5 | NW 4 | W 5 | WNW 5 | NW 6 | NNW 6 | — | SW 4 | SW 4 | SSW 6 | — | NW 4 | NW 4 | SW 3 | SSW 5 | SSW 6 | — | — | SSW 6 | SSW 5 |
| kJ | 34 | 94 | 9 | 81 | 105 | 198 | 77 | — | 11 | 40 | 176 | — | 24 | 7 | 12 | 116 | 406 | — | — | 35 | 46 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 321 | 221 | 175 | 1088 | 340 | 183 | 257 | 188 | 277 | 277 | 168 | 174 | 189 | 174 | 233 | 253 | 259 | 306 | 283 | 181 |
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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