Surf Forecasts:
Rhos-On-Sea surf forecast from 14 Sep 2026:
- Most powerful swell: Wednesday 16 Sep, 10PM (local time) - 1.5ft (0.4m), 5s period, NNW swell with 9 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 0.4m 5s and forecast to arrive on Wednesday (Sep 16) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Thursday (Sep 17) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Wed 16th Sep) | 1.5ft (0.4m) 5s |
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 what Rhos-On-Sea has in store for us. I've got to be straight with you – this forecast is a tough one. We're looking at a long, dry spell to start.
For the first week and a half, it's pretty much flat. From Monday the 14th right through to the morning of Saturday the 26th of September, there’s simply nothing worth paddling out for. The sea is just flat calm or showing tiny, unrideable bumps. It’s a real bummer, with the water sitting at a much warmer than normal 63°F for this time of year, but that's no consolation when there are no waves.
Finally, on Saturday the 26th, we get a tiny whisper of life. We’re talking about a little 1ft swell from the ENE with a period of just 3 seconds, building to 2ft later in the day. The combined wave energy is weak, barely hitting 11 (eleven). The wind is glassy in the morning, which is nice, but the swell is just too small and weak to do anything with.
Sunday the 27th afternoon brings the biggest bump in the whole forecast, but even then it’s a mixed bag. We get a 5ft NW groundswell with a 6-second period, giving moderate wave energy of 122 (one hundred and twenty-two). But here’s the kicker – the wind is howling onshore out of the NE at 9 mph, which will turn that point into a messy, blown-out mess. It’s a real shame because the swell has some size, but the conditions will ruin it.
The final days from Monday the 28th through Tuesday the 29th see some small swell sticking around, around 3ft to 4ft from the ESE, but with short 4-second periods and light to moderate cross-shore winds. It’s just poor surf conditions across the board, no way around it.
So, to sum it up: we’re in for a long period of flatness followed by a few days of small, poorly-conditioned waves. There isn't a single standout session in this 16-day window. The best advice I can give is to save your energy, check back later, and hope the forecasts change for the better. It can't stay this poor forever.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Mon night. Warm (max 20°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sat morning. Very mild (max 19°C on Sat morning, min 11°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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) | SW 3 | WSW 4 | SW 5 | W 5 | W 6 | NW 5 | NW 5 | NW 5 | W 4 | W 5 | W 5 | WNW 6 | WNW 5 | W 4 | WSW 5 | WSW 4 | WSW 5 | WNW 4 | WNW 3 | — | SW 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | off | off | off | off | off | off | off | cross-off |
High Tide | 1:32PM7.34m | 1:48AM7.48m | 2:06PM7.04m | 2:24AM7.00m | 2:42PM6.62m | 3:02AM6.44m | 3:19PM6.14m | 3:44AM5.86m | 4:05PM5.65m | 4:38AM5.32m | 5:08PM5.23m | 5:58AM4.95m | 6:43PM5.07m | ||||||||
Low Tide | 7:52PM0.46m | 8:14AM0.58m | 8:27PM0.82m | 8:48AM1.09m | 9:03PM1.27m | 9:24AM1.64m | 9:44PM1.77m | 10:06AM2.16m | 10:35PM2.26m | 11:02AM2.59m | 11:45PM2.63m | 12:21PM2.83m | 1:16AM2.70m | ||||||||
 |  |  |  | | | | | | |  |  | | |  | |  | | | |  | |
 | 6:45 | — | — | 6:47 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — |
 | — | 7:34 | — | — | 7:31 | — | — | 7:29 | — | — | 7:27 | — | — | 7:23 | — | — | 7:22 | — | — | 7:19 | — |
mm | — | — | 8 | 1 | 2 | 4 | 1 | — | 2 | — | — | — | — | — | — | 1 | 1 | — | — | — | — |
Temp °C | 19 | 20 | 19 | 16 | 15 | 14 | 13 | 13 | 14 | 14 | 14 | 13 | 17 | 16 | 16 | 19 | 19 | 17 | 20 | 21 | 18 |
Feels °C | 19 | 18 | 17 | 10 | 11 | 11 | 9 | 9 | 10 | 9 | 9 | 8 | 14 | 12 | 14 | 18 | 18 | 17 | 19 | 20 | 16 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 6 | WNW 3 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 3 | WSW 4 | SW 5 | W 5 | W 6 | NW 5 | NW 5 | NW 5 | W 4 | W 5 | W 5 | WNW 6 | WNW 5 | W 4 | WSW 5 | WSW 4 | WSW 5 | WNW 4 | — | — | SW 3 |
| kJ | 3 | 9 | 57 | 71 | 103 | 98 | 115 | 79 | 28 | 92 | 92 | 110 | 51 | 21 | 69 | 21 | 48 | 5 | — | — | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 275 | 275 | 320 | 442 | 556 | 194 | 198 | 230 | 230 | 240 | 556 | 194 | 194 | 433 | 283 | 283 | 320 | 97 | 268 | 275 | 186 |
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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