Surf Forecasts:
Rhos-On-Sea surf forecast from 17 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 7PM (local time) - 3.5ft (1.0m), 5s period, NNW swell with 42 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 1.0m 5s and forecast to arrive on Thursday (Aug 20) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Wednesday (Aug 19) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Thu 20th Aug) | 3.5ft (1.0m) 5s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright folks, let’s get into it. It’s Rusty here, and I’ve got to be straight with you – this Rhos-On-Sea outlook is a grim one. We’re staring down a long, flat spell with barely a ripple to get excited about for the next two weeks.
Right off the bat, we are looking at a major gap. From the start of the period right through to the morning of Thursday the 20th, there is absolutely no surf on offer. Zilch. A solid three days of flat, clean water but no waves to speak of. That’s a tough way to kick things off.
We do get a tiny pulse on Thursday the 20th. It’s a weak and messy WNW swell at 2ft to 3ft, with a short period of 5 seconds. The combined energy is pitiful at just 27 to 38. The wind is howling onshore from the NNE and NNW, making for choppy, poor surf conditions. Not worth paddling out for.
Friday the 21st is even worse, with tiny 0.3ft to 1.0ft leftovers, and then we get a blank run all the way from Saturday afternoon on the 22nd until Friday morning on the 28th. That’s nearly another full week of flatness. The morning of Saturday the 22nd does offer a brief moment of calm with a glassy 2ft NW swell (period 5 seconds, energy of 13 – very weak), but it’s still rated as poor surf.
The next and only real event in the entire window comes on Friday morning, 28th of August. We see a NW swell pushing 4ft with a 6-second period. The wind is cross-offshore from the west at 12 mph, so it will be clean. The combined energy hits 79, which is just shy of moderate. The swell size is small and the period is short, so the waves won't have any power. It’s the best of a very bad bunch, but honestly, it’s still a poor option. The point itself is inconsistent, and this is a very weak showing for the area.
If you were hoping for a standout to travel for, this isn’t it. This blank run is what happens here sometimes. The forecasts can always change, but right now, I’d keep the board in the car and the wetsuit on the peg.
- Rusty
Short Range ForecastLight rain (total 7mm), mostly falling on Mon night. Very mild (max 18°C on Mon morning, min 12°C on Tue night). Winds increasing (calm on Sun night, fresh winds from the WSW by Wed morning). | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Thu morning. Very mild (max 17°C on Sat morning, min 11°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 2 | WSW 4 | WNW 4 | WNW 5 | W 4 | W 5 | WSW 5 | WSW 4 | WNW 5 | NNW 5 | NE 4 | NW 4 | NNW 3 | NW 4 | NW 5 | NW 4 | NW 4 | NW 4 | WNW 4 | WNW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 19 | 38 | 16 | 3 | 1 | 5 | 13 | 7 | 18 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | off | off | cross-on | cross-on | glassy | cross-off | cross-on | cross | glassy | cross-on | cross-off | cross-off | cross-off | off |
High Tide | 2:43PM6.91m | 2:59AM7.10m | 3:22PM6.49m | 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 | ||||||||
Low Tide | 8:51AM0.40m | 9:02PM0.87m | 9:29AM0.94m | 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 | |||||||
 |  |  | | |  | |  | |  | | | |  | | | | | | |  | |
 | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — |
mm | — | — | 5 | — | — | — | — | 1 | 2 | 3 | 1 | 2 | 2 | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 17 | 18 | 15 | 17 | 17 | 14 | 15 | 16 | 13 | 15 | 16 | 12 | 17 | 16 | 13 | 17 | 17 | 14 |
Feels °C | 18 | 17 | 15 | 14 | 15 | 12 | 11 | 12 | 12 | 11 | 13 | 11 | 13 | 12 | 9 | 14 | 13 | 12 | 13 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | WNW 5 | — | NW 5 | NW 4 | — | NNE 4 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 19 | — | 12 | 3 | — | 3 | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | N 4 | N 7 | NW 6 | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 6 | 1 | 1 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | W 2 | WSW 4 | WNW 4 | WNW 5 | W 4 | W 5 | WSW 5 | WSW 4 | NNE 4 | NNW 5 | NE 4 | NNE 3 | NNW 3 | NW 4 | NW 5 | NW 4 | NW 4 | NW 4 | WNW 4 | WNW 4 |
| kJ | — | 1 | 19 | 36 | 35 | 28 | 59 | 98 | 24 | 8 | 38 | 16 | 1 | 1 | 5 | 13 | 7 | 18 | 14 | 19 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 268 | 323 | 581 | 75 | 514 | 283 | 275 | 268 | 107 | 194 | 345 | 186 | 186 | 242 | 226 | 226 | 245 | 226 | 241 | 241 | 188 |
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