Surf Forecasts:
Rhos-On-Sea surf forecast from 7 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 4PM (local time) - 3.5ft (1.1m), 5s period, NW swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 1AM (local time) - 8ft (2.4m), 7s period, NW swell with 526 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 4PM (local time) - 3.5ft (1.1m), 5s period with NW swell.
Best Forecast Surf Conditions for Rhos-On-Sea this week:
The surf forecast for Rhos-On-Sea over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 4PM. The primary swell is predicted to be 1.1m and 5s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Rhos-On-Sea in the next 16 days are 2.4m 7s and forecast to arrive on Wednesday (Sep 09) at 1AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 6s period and expected on Tuesday (Sep 08) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Wed 9th Sep) | 3.5ft (1.1m) 5s |
| Best Surf | 4PM (Wed 9th Sep) | 3.5ft (1.1m) 5s |
| Most Powerful | 1AM (Wed 9th Sep) | 8ft (2.4m) 7s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what North Wales has in store for us.
Right now, the pickings are slim. We’ve got a long, quiet stretch ahead. From Monday the 7th through to the 8th of September, there’s absolutely nothing doing – flat, poor conditions with a clean surface but zero swell. You can stay on the couch. The same dead spell carries on right through to the morning of Wednesday the 9th, when we finally see a bit of life.
That Wednesday morning, the 9th, a NW swell pushes in at 6 ft with a short 6-second period. The wind is cross-offshore from the NW and the combined energy is moderate (219). The waves are there, but it’s messy and called poor. By the afternoon, it drops to 4 ft from the NW, period down to 5 seconds, and energy is weak (71). It’s surfable but ordinary.
Thursday the 10th and Friday the 11th are back to flat and clean again – offshore winds but no swell. Saturday and Sunday the 12th and 13th are much the same: tiny, weak leftovers in the 0.7 ft to 1.0 ft range with next to no energy (2 and 1). The afternoon of Sunday the 13th goes glassy, but with that tiny 0.7 ft NW swell, there’s nothing to ride. The following week, Monday the 14th through Thursday the 17th, is just more of the same – flat or unusable, with most days reading zero swell.
Now, there is a glimmer. The afternoon of Sunday the 20th of September: a solid 8 ft swell from the WNW with a 7-second period and strong energy (621). The wind is cross-offshore from the WNW. Expect good surf conditions. That is the standout of the whole outlook, but it’s a long way off and with a short period, so it could be a bit lumpy. It’s a decent size – likely too much for beginners, but for anyone with a bit of experience on a point break like Rhos-On-Sea (point break, inconsistent, intermediate level), it could be worth a look if the wind gods deliver.
For the morning of Monday the 21st, we’ve got 6 ft NW swell with moderate energy (240) and cross-offshore wind, but it’s called poor. By the 22nd, it’s flat again.
Honestly, for the next week and a half, don’t expect much. Wait for that Sunday the 20th – it’s the only one on the calendar that even looks like a proper session. Keep the board waxed.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Mon night. Very mild (max 18°C on Mon morning, min 12°C on Mon night). Winds increasing (light winds from the SSW on Sun night, fresh winds from the WNW by Tue night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed night. Very mild (max 19°C on Sat morning, min 10°C on Wed night). Winds increasing (calm on Fri afternoon, fresh winds from the SW by Sat morning). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 4 | WSW 4 | W 4 | W 5 | W 6 | NW 7 | NW 6 | NW 5 | NW 5 | WSW 4 | SW 4 | WSW 5 | WNW 4 | NW 4 | NNW 4 | SW 4 | WSW 5 | NNW 3 | NNW 3 | NNW 3 | — |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 526 | 219 | 71 | 5 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 2 | 1 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross | cross-off | off | off | off | cross-off | glassy | off |
High Tide | 8:07AM5.78m | 8:40PM6.16m | 9:19AM6.19m | 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 | |||||||
Low Tide | 2:40PM1.92m | 3:21AM1.40m | 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 | ||||||||
 | |  |  |  |  |  | |  |  | | | | | | | | | | | | |
 | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — |
 | — | 7:51 | — | — | 7:49 | — | — | 7:45 | — | — | 7:44 | — | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — |
mm | — | — | 3 | — | 1 | — | 1 | — | 1 | — | — | — | — | — | — | — | 1 | — | 1 | 1 | — |
Temp °C | 18 | 17 | 16 | 15 | 15 | 14 | 14 | 15 | 12 | 16 | 17 | 17 | 17 | 16 | 13 | 19 | 18 | 18 | 18 | 19 | 16 |
Feels °C | 14 | 12 | 11 | 9 | 9 | 7 | 11 | 12 | 10 | 13 | 14 | 15 | 16 | 15 | 10 | 15 | 17 | 17 | 19 | 21 | 14 |
Swell 1 Height (m) Direction Period (s) | — | W 13 | WSW 6 | — | — | — | — | — | NW 5 | — | — | — | — | — | NNW 4 | WSW 4 | — | W 4 | NNW 3 | NNW 3 | — |
| kJ | — | 4 | 4 | — | — | — | — | — | 5 | — | — | — | — | — | 1 | 5 | — | 2 | 2 | 1 | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 7 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 4 | WSW 4 | W 4 | W 5 | W 6 | NW 7 | NW 6 | NW 5 | SW 4 | WSW 4 | SW 4 | WSW 5 | WNW 4 | NW 4 | WSW 3 | SW 4 | WSW 5 | NNW 3 | — | — | — |
| kJ | 21 | 25 | 11 | 87 | 258 | 526 | 219 | 71 | 3 | 15 | 20 | 87 | 15 | 14 | 1 | 20 | 69 | 2 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 75 | 334 | 271 | 198 | 556 | 345 | 194 | 0 | 191 | 325 | 275 | 333 | 194 | 75 | 183 | 275 | 406 | 255 | 275 | 275 | 275 |
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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