Surf Forecasts:
Rhos-On-Sea surf forecast from 11 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 7AM (local time) - 3.5ft (1.1m), 5s period, NNW swell with 59 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 Saturday (Aug 15) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Aug 14) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Sat 15th Aug) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright, I’m Rusty, and here’s how it’s shaping up for Rhos-On-Sea over the next couple of weeks.
Honestly, friends, it’s a tough stretch. The first nine days are pretty much a write-off – we’re looking at a long run of flat to tiny, messy conditions with no real energy to speak of. The water is running much warmer than usual for this time of year, coming in at 66°F (3°F above average), which is pretty unusual and might feel nice for a paddle, but don’t expect any waves to go with it.
We finally see a glimmer of life on Thursday, August 20th. That morning, a small NW swell arrives at 7ft with a 7-second period, and with light easterly winds making it glassy, conditions look clean. The combined energy hits 371 (moderate), so there’s some push. By Thursday afternoon, it’s even better – the swell bumps up to 8ft from the NW, still glassy with a light NE breeze, and the energy jumps to 777 (strong). This is the standout window, but heads up – with waves over 8ft, this is strictly for experienced surfers. The period is short though, so it’ll be a bit crumbly and won’t have that punchy groundswell shape.
After that, Friday the 21st drops back into the small stuff, and the following days look mostly flat or tiny again. There’s a brief, ordinary little bump on Saturday the 22nd with 4ft from the NW and 103 energy (moderate), but it’s not worth getting excited about.
Overall, the only real call here is the Thursday, August 20th window. If you’re a solid intermediate or expert, the afternoon glass-off could give you a few fun ones at Rhos-On-Sea, but don’t expect a classic.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Wed afternoon, min 17°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Fri morning. Very mild (max 18°C on Fri morning, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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) | ESE 2 | — | — | SSE 3 | — | — | — | — | SW 3 | W 3 | NW 4 | NW 3 | NW 5 | NW 4 | NNW 4 | NNW 4 | NW 4 | NNW 3 | — | SW 5 | WSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 57 | 24 | 7 | 12 | 8 | 1 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | glassy | cross-on | cross-off | glassy | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | cross | cross-off | off | glassy | glassy |
High Tide | 10:23AM6.75m | 10:44PM7.27m | 11:15AM7.14m | 11:32PM7.74m | 12:01PM7.40m | 00:17AM8.03m | 12:44PM7.50m | 00:59AM8.11m | 1:25PM7.44m | 1:39AM7.95m | 2:04PM7.23m | 2:19AM7.60m | 2:43PM6.91m | 2:59AM7.10m | |||||||
Low Tide | 4:51PM0.93m | 5:22AM0.36m | 5:40PM0.54m | 6:10AM-0.07m | 6:24PM0.28m | 6:54AM-0.28m | 7:06PM0.18m | 7:34AM-0.26m | 7:45PM0.26m | 8:13AM-0.02m | 8:24PM0.50m | 8:51AM0.40m | 9:02PM0.87m | ||||||||
 | |  |  | | | | | |  | |  | | | | |  |  | |  | | |
 | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — |
 | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:40 | — | — | 8:38 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 2 | 1 | 6 | — |
Temp °C | 25 | 25 | 18 | 27 | 28 | 21 | 26 | 24 | 20 | 18 | 17 | 16 | 16 | 16 | 14 | 18 | 17 | 14 | 16 | 16 | 16 |
Feels °C | 24 | 22 | 17 | 26 | 26 | 20 | 25 | 23 | 21 | 18 | 15 | 15 | 14 | 13 | 12 | 16 | 15 | 13 | 17 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 3 | — | SW 5 | WSW 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 6 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 2 | — | — | SSE 3 | — | — | — | — | SW 3 | W 3 | NW 4 | NW 3 | NW 5 | NW 4 | NNW 4 | NNW 4 | NW 4 | — | — | — | — |
| kJ | 1 | — | — | 1 | — | — | — | — | 2 | 5 | 23 | 7 | 57 | 24 | 7 | 12 | 8 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 241 | 347 | 188 | 186 | 193 | 183 | 194 | 268 | 186 | 320 | 190 | 195 | 376 | 376 | 202 | 275 | 275 | 312 | 230 | 246 | 75 |
Best forecast wave conditions in North Wales | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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