Surf Forecasts:
Rhos-On-Sea surf forecast from 31 Aug 2026:
- Most powerful swell: Tuesday 1 Sep, 1AM (local time) - 1.5ft (0.4m), 4s period, NNW swell with 7 kJ wave energy.
Best Forecast Surf Conditions for Rhos-On-Sea this week:
The most powerful waves expected at Rhos-On-Sea in the next 16 days are 0.4m 4s and forecast to arrive on Tuesday (Sep 01) at 1AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Friday (Sep 04) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Tue 1st Sep) | 1.5ft (0.4m) 4s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what Rhos-On-Sea has in store for us over the next couple of weeks.
Right off the bat, it’s a flat spell. We’re looking at a big fat zero on the wave energy front from now through the end of the first week of September. The wind is mostly offshore or cross-offshore, which would be magic if there was any swell to work with, but there just isn’t. The water is about average for this time of year, nothing unusual to report on that front.
We finally see a tiny pulse arrive on the morning of Monday the 7th of September. It’s a small 2ft swell coming out of the southeast with a short period of 4 seconds, giving us a combined energy of just 10. That’s weak. It’ll be blown out by a gentle offshore breeze in the morning, making for clean but very small waves. This spot is a point break and it’s inconsistent at the best of times, so this is barely a ripple. Not a day to get excited about.
After that, the surf goes nearly flat again. There’s a brief appearance of some 0.7ft to 1ft junk on the 10th and 11th, but the wind swings cross-shore and lumps it up into chop. Totally not worth paddling out for.
The most promising window comes on Saturday the 12th of September. The morning is absolutely glassy with a slight breeze from the SSE, and we get a tiny 2ft southeast swell with a 3-second period, combined energy of 5. It’s still classified as poor surf conditions, but let’s be real – with glassy conditions that small, clean wave on a point could be a real knee-board special. It’s the best on offer, but it’s a true long shot.
Sunday the 13th has a similar size, 2ft from the northeast with a slightly better 4-second period, energy of 6, and a light cross-offshore breeze keeping it clean. Again, very small.
The standout, if you can call it that, is the glassy early morning of Saturday the 12th. It’s the only time conditions line up halfway decently. But for a proper surf? We’ve got a two-week gap of basically nothing. This is one of those runs where the ocean just isn’t cooperating.
Signing off,
Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Wed morning. Warm (max 21°C on Wed afternoon, min 11°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Thu night. Warm (max 21°C on Thu morning, min 13°C on Fri night). Winds increasing (calm on Thu night, strong winds from the WSW by Fri morning). | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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) | WNW 5 | WNW 5 | NNW 4 | WSW 4 | WSW 4 | WSW 4 | WSW 5 | W 4 | SW 5 | WNW 5 | W 4 | W 3 | W 6 | W 6 | W 5 | WNW 6 | WNW 5 | NW 4 | WSW 4 | WSW 5 | WSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | off | off | cross | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off |
High Tide | 1:34PM7.27m | 1:49AM7.60m | 2:10PM7.16m | 2:27AM7.34m | 2:50PM6.90m | 3:10AM6.94m | 3:36PM6.52m | 4:02AM6.44m | 4:33PM6.09m | 5:08AM5.95m | 5:48PM5.76m | 6:36AM5.66m | 7:19PM5.77m | ||||||||
Low Tide | 7:44AM0.20m | 7:55PM0.52m | 8:20AM0.38m | 8:33PM0.72m | 8:58AM0.71m | 9:14PM1.04m | 9:42AM1.15m | 10:03PM1.44m | 10:36AM1.63m | 11:07PM1.84m | 11:47AM2.04m | 00:31AM2.06m | 1:15PM2.17m | 2:04AM1.90m | |||||||
 |  |  |  |  |  | | | | |  |  | | |  | | | | | | | |
 | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — |
 | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — | — | 7:58 | — | — | 7:55 | — | — | 7:52 | — |
mm | 1 | — | — | — | — | 1 | 3 | — | — | — | 6 | 12 | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 14 | 19 | 19 | 15 | 17 | 21 | 18 | 21 | 17 | 15 | 17 | 18 | 14 | 16 | 16 | 13 | 18 | 19 | 13 |
Feels °C | 9 | 12 | 11 | 15 | 15 | 13 | 17 | 19 | 15 | 17 | 15 | 16 | 9 | 11 | 7 | 12 | 12 | 10 | 16 | 17 | 11 |
Swell 1 Height (m) Direction Period (s) | — | — | NNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 4 | WSW 4 | WSW 5 | WSW 6 |
| kJ | — | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | 10 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 5 | WNW 5 | W 4 | WSW 4 | WSW 4 | WSW 4 | WSW 5 | W 4 | SW 5 | WNW 5 | W 4 | W 3 | W 6 | W 6 | W 5 | WNW 6 | WNW 5 | SW 3 | — | — | — |
| kJ | 56 | 77 | 14 | 19 | 25 | 13 | 28 | 8 | 51 | 35 | 16 | 5 | 174 | 232 | 134 | 87 | 30 | 6 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 556 | 75 | 75 | 302 | 283 | 268 | 323 | 325 | 238 | 230 | 240 | 238 | 514 | 514 | 312 | 331 | 206 | 186 | 195 | 200 | 315 |
Best forecast wave conditions in North Wales | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Rhos-On-Sea Surf forecast
The above surf forecast table for Rhos-On-Sea provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rhos-On-Sea can be found by selecting the local surf guide option on the grey menu. Our Rhos-On-Sea 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 (Rhos-On-Sea) 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 Rhos-On-Sea 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.
Rhos-On-Sea is 2 km (1 miles) from Colwyn Bay. If you plan a holiday in North Wales, look for hotels and other accommodation in Colwyn Bay. Colwyn Bay has rooms for a wide range of budgets as well as car hire and transport links.
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