Surf Forecasts:
Rhos-On-Sea surf forecast from 4 Sep 2026:
- Most powerful swell: Wednesday 9 Sep, 4AM (local time) - 6.5ft (2.0m), 6s period, WNW swell with 292 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 2.0m 6s and forecast to arrive on Wednesday (Sep 09) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 7s period and expected on Tuesday (Sep 08) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Wed 9th Sep) | 6.5ft (2.0m) 6s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at the outlook for our local patch.
Straight up, it’s a tough stretch ahead for Rhos-On-Sea. We’ve got a long, dry spell with zero surf on the cards for the first week and a half. From Friday the 4th right through to Monday the 14th of September, the forecast is showing nothing but "poor surf conditions" with no swell to speak of. That’s a solid ten-day gap with nothing worth paddling out for. Winds will be all over the place, mostly cross-off or offshore at times, but without any wave energy, it’s just a flat, clean lake.
The first flicker of life shows up on Tuesday the 15th of September. A small NW swell pushes in with wave heights around 4ft, but here’s the kicker – the period is a short and weak 6 seconds, and the combined energy is sitting at just 119 – that’s weak, barely enough to get excited about. The wind will be cross-off from the west, which is alright, but the waves are going to be weak and crumbly, definitely only for the patient. The water temp is about average for this time of year, nothing weird going on there.
Honestly, the only real standout in this entire 16-day window is that Tuesday morning session. Rhos-On-Sea is a point break that’s fairly exposed to the NW, and that’s exactly where this swell is coming from. It’s the biggest push we’ll see, but at 4ft and such a short period, don’t expect anything epic. It’s a small, clean option for a longboard or a foiler, and with light winds forecast, it’ll be rideable. The spot is inconsistent, so catching it on a day it actually has a pulse is something. Crowds are possible here, but with surf this marginal, it’s unlikely to be packed.
After that, it fades again. Wednesday the 16th has a tiny 1ft ripple with a period of just 4 seconds – basically a non-event. Then from the 17th onwards, it’s back to flat, glassy conditions with no swell energy. The end of the run on the 19th shows offshore winds, but again, no swell.
So, if you’re desperate, aim for the morning of Tuesday the 15th of September. It’s the only window with any real wave height. The rest of the time? Leave the board in the van.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Thu night. Warm (max 23°C on Sun afternoon, min 12°C on Fri night). Winds decreasing (fresh winds from the W on Fri morning, light winds from the SSE by Sun morning). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon night. Very mild (max 17°C on Sun night, min 11°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 6 | W 6 | WNW 6 | WNW 6 | WNW 4 | NW 4 | WSW 6 | WSW 6 | SW 4 | W 4 | WSW 5 | W 5 | W 6 | W 7 | WNW 6 | WNW 6 | W 5 | WSW 5 | W 4 | W 4 | W 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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-off | cross-off | cross | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off |
High Tide | 4:02AM6.44m | 4:33PM6.09m | 5:08AM5.95m | 5:48PM5.76m | 6:36AM5.66m | 7:19PM5.77m | 8:07AM5.78m | 8:40PM6.16m | 9:19AM6.19m | 9:41PM6.73m | 10:15AM6.67m | 10:31PM7.29m | 11:01AM7.09m | 11:15PM7.72m | |||||||
Low Tide | 10:36AM1.63m | 11:07PM1.84m | 11:47AM2.04m | 00:31AM2.06m | 1:15PM2.17m | 2:04AM1.90m | 2:40PM1.92m | 3:21AM1.40m | 3:46PM1.46m | 4:20AM0.81m | 4:38PM0.96m | 5:08AM0.28m | 5:23PM0.55m | ||||||||
 |  |  | | |  |  | | | | | | | | | |  |  |  | | | |
 | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — |
 | — | 7:58 | — | — | 7:55 | — | — | 7:52 | — | — | 7:51 | — | — | 7:49 | — | — | 7:45 | — | — | 7:44 | — |
mm | — | — | — | — | — | 1 | 2 | — | 1 | — | — | 3 | — | — | — | — | — | 3 | 1 | 1 | 2 |
Temp °C | 17 | 18 | 15 | 16 | 18 | 13 | 19 | 23 | 17 | 16 | 17 | 15 | 15 | 16 | 13 | 16 | 16 | 15 | 18 | 18 | 15 |
Feels °C | 10 | 12 | 9 | 13 | 15 | 11 | 18 | 21 | 15 | 12 | 13 | 10 | 8 | 10 | 8 | 11 | 12 | 12 | 15 | 16 | 10 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | WSW 4 | WSW 6 | WSW 6 | WSW 7 | — | W 13 | — | — | — | — | — | — | W 4 | — | — | — |
| kJ | — | — | — | — | — | 2 | 6 | 3 | 5 | — | 3 | — | — | — | — | — | — | 15 | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | WSW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 6 | W 6 | WNW 6 | WNW 6 | WNW 4 | S 2 | — | — | SW 4 | W 4 | WSW 5 | W 5 | W 6 | W 7 | WNW 6 | WNW 6 | W 5 | WSW 5 | W 4 | W 4 | W 5 |
| kJ | 171 | 164 | 167 | 74 | 21 | 1 | — | — | 14 | 22 | 35 | 96 | 293 | 384 | 372 | 143 | 53 | 40 | 21 | 30 | 51 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 293 | 514 | 194 | 195 | 238 | 193 | 243 | 365 | 243 | 75 | 283 | 189 | 556 | 556 | 345 | 434 | 241 | 230 | 75 | 556 | 345 |
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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