Surf Forecasts:
Rhos-On-Sea surf forecast from 10 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 10PM (local time) - 3.5ft (1.1m), 5s period, NW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 7AM (local time) - 7ft (2.2m), 7s period, NW swell with 421 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 10PM (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 16) at 10PM. 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 2.2m 7s and forecast to arrive on Wednesday (Sep 16) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Saturday (Sep 12) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 16th Sep) | 3.5ft (1.1m) 5s |
| Best Surf | 10PM (Wed 16th Sep) | 3.5ft (1.1m) 5s |
| Most Powerful | 7AM (Wed 16th Sep) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be honest right off the bat – looking at the 16-day window for the North Wales coast, it’s a grim picture. There’s a massive flat spell to start, and the only real blip of swell we get is a messy, short-period pulse that’s not going to give us anything decent. The first recommendation we get isn't until way later, so we’re looking at a long, dry gap.
The only spot on the radar is Rhos-On-Sea (point break). It’s inconsistent and only fairly exposed to the NW, and the water is currently sitting at 64°, which is a whopping 4° warmer than usual for this time of year – that’s a very notable anomaly, feels like we’re still in a warm spell.
For the first several days, there’s absolutely nothing. We’re looking at a wall of zeros and “poor surf conditions” from Thursday the 10th all the way through to Tuesday the 15th. Some days look clean, like the Friday morning with some clouds and a WNW cross-off, but there’s no swell to ride. It’s a total write-off.
Then, on Wednesday the 16th of September, we finally see a pulse. The morning brings a 7ft NW swell, but it’s a short-period 7 seconds, which is basically windswell, and the combined energy is moderate at 381. The wind is a cross-shore from the NW at 16 mph, which is going to chop it up. The morning session is a no-go. By the afternoon, the swell drops to 5ft with a 6-second period (energy down to 172) and the wind turns to a cross-off from the WNW at 12 mph, cleaning it up a bit. But honestly, with that period, the waves will be weak and crumbly, not the kind of power you want for a point break. It’s a poor surf conditions call all day.
After that, it goes flat again. From Thursday the 17th all the way through to the end of the forecast on Friday the 25th, it’s a desert. Plenty of offshores and clean conditions, like the glassy morning on Monday the 21st with a 3 mph wind, but zero swell. It’s heartbreaking.
So, the standout? There isn’t one. The only period with any swell (Wednesday the 16th) is disappointing. If you’re desperate, the afternoon session on Wednesday the 16th at Rhos-On-Sea is the only thing on the cards, but the waves will be small and weak. For the rest of the 16 days, the board stays in the van.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat morning. Very mild (max 18°C on Sat afternoon, min 10°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon night. Very mild (max 19°C on Mon morning, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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) | WSW 5 | SW 6 | W 4 | WNW 4 | NW 4 | NW 4 | SW 6 | SW 5 | WSW 4 | WNW 4 | NW 4 | NNW 4 | SW 4 | SW 5 | WSW 5 | W 4 | WNW 5 | NW 5 | NW 7 | NW 6 | NW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 16 | 1 | 0 | 0 | 0 | 0 | 0 | 126 | 381 | 172 | 51 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | cross | cross-off | off | off | off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | off |
High Tide | 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 | 2:06PM7.04m | 2:24AM7.00m | 2:42PM6.62m | 3:02AM6.44m | |||||||
Low Tide | 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 | 8:14AM0.58m | 8:27PM0.82m | 8:48AM1.09m | 9:03PM1.27m | ||||||||
 |  |  | | |  |  | |  | | | | | | |  | | |  | |  | |
 | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:47 | — | — | 6:48 | — | — |
 | — | 7:44 | — | — | 7:40 | — | — | 7:38 | — | — | 7:36 | — | — | 7:34 | — | — | 7:31 | — | — | 7:29 | — |
mm | — | — | — | — | — | — | 3 | — | 1 | — | — | — | — | — | 1 | — | — | 3 | 2 | — | — |
Temp °C | 17 | 17 | 15 | 15 | 15 | 16 | 16 | 18 | 17 | 16 | 16 | 15 | 19 | 19 | 18 | 17 | 16 | 14 | 14 | 15 | 12 |
Feels °C | 14 | 14 | 13 | 13 | 13 | 11 | 13 | 17 | 17 | 16 | 15 | 13 | 19 | 18 | 17 | 14 | 12 | 10 | 10 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 5 | — | — | — | — | NW 4 | — | — | — | — | — | NNW 4 | WSW 5 | — | WSW 5 | — | — | — | — | — | — |
| kJ | 8 | — | — | — | — | 1 | — | — | — | — | — | 1 | 4 | — | 23 | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 3 | SW 6 | W 4 | WNW 4 | NW 4 | SW 3 | SW 6 | SW 5 | WSW 4 | WNW 4 | NW 4 | — | SW 4 | SW 5 | — | W 4 | WNW 5 | NW 5 | NW 7 | NW 6 | NW 5 |
| kJ | 3 | 77 | 28 | 22 | 14 | 2 | 123 | 76 | 16 | 24 | 16 | — | 8 | 32 | — | 36 | 40 | 126 | 381 | 172 | 51 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 254 | 158 | 75 | 186 | 75 | 312 | 283 | 327 | 75 | 271 | 254 | 193 | 238 | 254 | 200 | 325 | 624 | 194 | 196 | 194 | 195 |
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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