Surf Forecasts:
Rhos-On-Sea surf forecast from 8 Sep 2026:
- Most powerful swell: Wednesday 9 Sep, 4AM (local time) - 7ft (2.1m), 7s period, NW swell with 360 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 2.1m 7s and forecast to arrive on Wednesday (Sep 09) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Tuesday (Sep 08) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Wed 9th Sep) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – the next couple of weeks are looking pretty grim for Rhos-On-Sea. We’ve got a long stretch of very little to nothing on the cards, so don’t be in a rush to get the wetsuit on.
The water is sitting at a warm 64°, which is more than four degrees warmer than usual for this time of year – that’s pretty notable and feels almost subtropical.
The first hint of anything rideable is a tiny pulse on Wednesday the 9th. Early morning we might see a 5ft swell from the northwest, but it’s a weak, short-period windswell with a period of just 6 seconds, and the combined energy is a meagre 138. The wind is a cross-offshore breeze, so it’ll be clean, but the waves will be small and a bit gutless. That afternoon it drops to 3ft, and the wind goes cross-shore, bringing in a slight chop. Not exactly a standout.
After that, it’s a desert. From Thursday the 10th all the way through to Monday the 14th, there's basically nothing – zero swell. We get a few small bumps here and there, like a 3ft northwest swell on Sunday the 13th afternoon, but with a period of 5 seconds and energy of just 32, it’s hardly worth paddling out for. The wind stays mostly cross-off or even offshore, keeping the surface clean, but there’s no wave power to back it up.
Then another long break from the 15th through to the end of the period. We see a tiny 1ft northwest swell on Tuesday the 15th afternoon, but with a 3-second period and 3 energy, that’s barely a ripple. A few more 0.7ft and 1.0ft spikes pop up mid-week, but again, the period is too short and the energy is virtually non-existent. Even the glassy conditions on Friday the 18th and Saturday the 19th mornings won’t help if there’s no swell.
Honestly, if you’re looking for a true highlight, there isn’t one. The best chance to get wet is probably the Wednesday morning of the 9th, with that 5ft NW swell. It’s small, it’s weak, but with the cross-offshore wind, it’ll be the cleanest of a messy bunch. For the rest of the time, you’re better off doing something else.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu night. Very mild (max 18°C on Thu morning, min 10°C on Wed night). Winds decreasing (fresh winds from the NW on Tue night, light winds from the WSW by Wed afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat night. Very mild (max 17°C on Sat morning, min 10°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 5 | WNW 6 | NW 6 | NW 6 | NW 5 | NNW 4 | SSW 3 | SW 5 | W 4 | WNW 5 | NW 4 | NNW 4 | SW 4 | SW 6 | WSW 5 | WNW 4 | NW 5 | NW 4 | SW 4 | WSW 4 | SW 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 328 | 138 | 35 | 2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 25 | 4 | 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 | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | off | off |
High Tide | 9:41PM6.73m | 10:15AM6.67m | 10:31PM7.29m | 11:01AM7.09m | 11:15PM7.72m | 11:42AM7.39m | 11:56PM7.97m | 12:20PM7.53m | 00:34AM8.00m | 12:56PM7.52m | 1:11AM7.83m | 1:32PM7.34m | 1:48AM7.48m | ||||||||
Low Tide | 3:46PM1.46m | 4:20AM0.81m | 4:38PM0.96m | 5:08AM0.28m | 5:23PM0.55m | 5:51AM-0.07m | 6:03PM0.28m | 6:29AM-0.20m | 6:41PM0.17m | 7:06AM-0.12m | 7:17PM0.24m | 7:40AM0.16m | 7:52PM0.46m | ||||||||
 |  |  | | | | |  |  |  | | | | |  | | |  |  | | | |
 | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — |
 | — | 7:49 | — | — | 7:45 | — | — | 7:44 | — | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — | — | 7:34 | — |
mm | — | 2 | — | 1 | — | — | — | 1 | 2 | — | — | — | — | — | 1 | 1 | — | — | — | — | — |
Temp °C | 15 | 14 | 13 | 14 | 15 | 11 | 18 | 16 | 15 | 14 | 15 | 12 | 17 | 17 | 17 | 16 | 17 | 15 | 20 | 19 | 19 |
Feels °C | 9 | 8 | 6 | 9 | 12 | 8 | 15 | 12 | 13 | 10 | 11 | 10 | 13 | 12 | 16 | 16 | 17 | 15 | 20 | 18 | 15 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | NW 5 | NNW 4 | — | — | — | — | — | NNW 4 | — | — | — | — | NNW 5 | NW 4 | — | WSW 4 | — |
| kJ | — | — | — | — | 35 | 2 | — | — | — | — | — | 1 | — | — | — | — | 7 | 4 | — | 3 | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | WNW 6 | NW 6 | NW 6 | — | SW 3 | SSW 3 | SW 5 | W 4 | WNW 5 | NW 4 | WSW 3 | SW 4 | SW 6 | WSW 5 | WNW 4 | NW 5 | WSW 3 | SW 4 | — | SW 3 |
| kJ | 92 | 179 | 328 | 138 | — | 7 | 5 | 26 | 31 | 39 | 16 | 2 | 10 | 120 | 42 | 21 | 25 | 1 | 4 | — | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 198 | 1094 | 345 | 196 | 75 | 243 | 386 | 333 | 189 | 194 | 194 | 186 | 243 | 275 | 333 | 75 | 254 | 238 | 193 | 283 | 293 |
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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