Surf Forecasts:
Rhos-On-Sea surf forecast from 18 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 1AM (local time) - 3.5ft (1.1m), 5s period, NW swell with 60 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 1.1m 5s and forecast to arrive on Sunday (Aug 23) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Wednesday (Aug 19) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Sun 23rd Aug) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s be straight with you. The next couple of weeks are looking flat and pretty grim for Rhos-On-Sea. We’ve got a long stretch of poor surf conditions stretching across the whole 16-day window, so don’t get your hopes up for any hero sessions. It’s a real bummer, but sometimes that’s the way it goes.
We start off this Tuesday with nothing on offer and that pattern holds through Wednesday. Thursday the 20th throws us a tiny crumb of 3ft swell, but it’s short-period slop with light rain and onshore winds, so it’s not worth the paddle. The energy is weak, maxing out at just 34 (moderate wave energy at best, but honestly it’s not doing anything for us). The water is a notable 7° warmer than average for this time of year, which is pretty wild, but that’s the only standout.
The weekend isn’t any better. Friday and Saturday are dribbling in with some 1ft waves and cross-off winds, but the energy is pitiful, down to single digits. It’s clean but there’s just nothing to ride. Sunday the 23rd has a slight pulse to 3ft with 49 (moderate wave energy), but the wind is cross-shore and it’s still short-period stuff – a whole lotta nothing.
Then we hit a dead zone. From Monday the 24th through the end of the month, it’s flat. Glassy conditions on the 25th are lovely to look at, but there’s no swell to push through. We’re talking days of nothing, a proper blank run. There is a bit of action on the 28th with some 15 mph offshore winds on Friday afternoon, but there’s no wave to blow out.
We finally see a tiny glimmer on the 1st of September with a 1ft WNW groundswell, and again on the 2nd with a bit of cross-shore wind, but these are still poor surf conditions and the energy is just not there. All in all, we’ve got a two-week stretch where you’re better off finding something else to do. The board stays in the car. I’m sorry to say it, but the outlook is grim. Keep an eye on the charts, though – when it’s this flat, it can’t stay that way forever.
Rusty out.
Short Range ForecastModerate rain (total 15mm), heaviest on Tue night. Very mild (max 18°C on Tue afternoon, min 11°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Fri afternoon. Very mild (max 18°C on Mon morning, min 11°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 4 | W 4 | W 4 | W 4 | WSW 4 | NNE 4 | N 5 | NNW 4 | NW 5 | NW 4 | NW 5 | NW 5 | NW 4 | NW 5 | NW 5 | NW 4 | NW 4 | W 3 | — | WSW 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 31 | 34 | 10 | 14 | 5 | 16 | 8 | 0 | 60 | 49 | 16 | 2 | 0 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | on | cross-on | glassy | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | glassy | glassy | cross-on | off |
High Tide | 3:41AM6.52m | 4:04PM6.03m | 4:27AM5.92m | 4:54PM5.59m | 5:26AM5.41m | 6:02PM5.25m | 6:46AM5.11m | 7:28PM5.17m | 8:12AM5.13m | 8:45PM5.41m | 9:18AM5.40m | 9:41PM5.82m | ||||||||
Low Tide | 9:42PM1.32m | 10:08AM1.51m | 10:25PM1.81m | 10:52AM2.05m | 11:17PM2.27m | 11:49AM2.49m | 00:27AM2.59m | 1:05PM2.71m | 1:54AM2.64m | 2:29PM2.62m | 3:12AM2.37m | 3:35PM2.27m | ||||||||
 |  |  |  | | | | | | |  | |  | | | |  | | | | |
 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — |
 | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — |
mm | — | 4 | 2 | — | 1 | 2 | 2 | 1 | 3 | 3 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 15 | 16 | 18 | 14 | 14 | 15 | 13 | 15 | 15 | 13 | 15 | 15 | 13 | 15 | 15 | 13 | 18 | 17 | 13 |
Feels °C | 15 | 13 | 13 | 14 | 12 | 11 | 13 | 12 | 14 | 14 | 11 | 12 | 12 | 12 | 13 | 13 | 12 | 16 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | W 4 | — | NNW 4 | NW 5 | NW 4 | NW 5 | — | — | — | — | — | NW 4 | W 3 | — | WSW 5 |
| kJ | — | — | — | — | — | 3 | — | 10 | 14 | 5 | 16 | — | — | — | — | — | 2 | 1 | — | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 4 | W 4 | W 4 | W 4 | WSW 4 | NNE 4 | N 5 | — | — | — | — | NW 5 | NW 4 | NW 5 | NW 5 | NW 4 | WNW 3 | — | — | — |
| kJ | 29 | 28 | 24 | 12 | 13 | 31 | 34 | — | — | — | — | 8 | 9 | 60 | 49 | 16 | 2 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 434 | 199 | 275 | 268 | 271 | 189 | 194 | 186 | 186 | 242 | 226 | 226 | 242 | 230 | 226 | 246 | 230 | 230 | 275 | 275 |
Best forecast wave conditions in North Wales | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rhos-On-Sea surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest