Surf Forecasts:
Rhos-On-Sea surf forecast from 19 Aug 2026:
- Most powerful swell: Thursday 20 Aug, 1PM (local time) - 3.5ft (1.1m), 5s period, NNE swell with 61 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 Thursday (Aug 20) at 1PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 5s period and expected on Saturday (Aug 22) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Thu 20th 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 – it’s a tough stretch for Rhos-On-Sea. Over the whole 16-day window, there’s just nothing worth paddling out for. The waves are tiny, the energy is flat, and the wind is all over the place. We’re looking at a long, dry spell from now until the end of the period.
The only real blip of activity comes on Thursday, 20th August, with a tiny 3 ft swell from the north, but it’s a short 5-second period, onshore wind, and the combined energy is a measly 37. It’s messy, weak, and not worth your time. The water is sitting at 67°, which is a whopping 7° warmer than normal for this time of year – that’s very unusual, but it doesn’t fix the flatness.
From there, it’s a wasteland. Most days show zero swell energy, and when there is a little bump, it’s under 2 ft, with periods of 4 or 5 seconds and combined energy barely cracking double digits. The wind flips around constantly, but it’s never doing us any favours – mostly cross or cross-onshore, and even the clean offshore days late in the month have no swell to work with.
The break itself (Rhos-On-Sea) is a point that’s inconsistent. It’s fairly exposed to swell, but with nothing coming from the optimum NW direction with any size or power, it just doesn’t fire. Honestly, this is a blank run that feels more normal for the area than a surprise. It’ll take a proper low-pressure system to change the game – forecasts can shift, but for now, keep the board in the car and the wetsuit dry.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Thu morning. Very mild (max 19°C on Wed afternoon, min 11°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 12°C on Sat night). Winds increasing (calm on Sun night, fresh winds from the E by Tue morning). | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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 4 | WSW 3 | NNE 4 | N 5 | NNW 4 | NW 5 | NW 4 | NW 5 | NW 5 | NW 5 | NNW 5 | NNW 4 | NW 4 | — | — | E 3 | ESE 4 | E 4 | E 4 | ESE 4 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 0 | 16 | 45 | 16 | 19 | 6 | 29 | 25 | 0 | 31 | 12 | 4 | 0 | 0 | 1 | 25 | 28 | 28 | 52 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | cross-off | cross | cross-off | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 10:07AM5.77m | 10:24PM6.29m | |||||||
Low Tide | 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 | 4:08AM1.93m | 4:23PM1.83m | ||||||||
 |  |  | | |  | |  | |  |  | | | | | | |  | | | |
 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — |
 | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:21 | — |
mm | — | 2 | 4 | — | 5 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 18 |
Temp °C | 19 | 15 | 14 | 16 | 13 | 14 | 17 | 13 | 14 | 15 | 13 | 16 | 16 | 14 | 22 | 23 | 18 | 22 | 22 | 17 |
Feels °C | 15 | 13 | 12 | 13 | 13 | 13 | 13 | 11 | 11 | 12 | 12 | 15 | 15 | 14 | 18 | 19 | 13 | 17 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | — | — | W 4 | — | — | NW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 6 | — | — | 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 4 | WSW 3 | NNE 4 | N 5 | NNW 4 | — | NW 4 | NW 5 | NW 5 | NW 5 | NNW 5 | NNW 4 | NW 4 | — | — | E 3 | ESE 4 | E 4 | E 4 | ESE 4 |
| kJ | 17 | 6 | 16 | 45 | 16 | — | 6 | 29 | 25 | 28 | 31 | 12 | 4 | — | — | 1 | 25 | 28 | 28 | 52 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 254 | 827 | 189 | 514 | 191 | 196 | 242 | 200 | 226 | 230 | 206 | 206 | 310 | 188 | 268 | 279 | 271 | 378 | 268 | 308 |
Best forecast wave conditions in North Wales | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.
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