Surf Forecasts:
Rhos-On-Sea surf forecast from 21 Aug 2026:
- Best quality surf: Thursday 27 Aug, 7PM (local time) - 4.5ft (1.4m), 6s period, NW swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 4PM (local time) - 6.5ft (2.0m), 7s period, WNW swell with 346 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 7PM (local time) - 4.5ft (1.4m), 6s 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 Thursday (Aug 27) at 7PM. The primary swell is predicted to be 1.4m and 6s 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 2.0m 7s and forecast to arrive on Thursday (Aug 27) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 6s period and expected on Thursday (Aug 27) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Thu 27th Aug) | 4.5ft (1.4m) 6s |
| Best Surf | 7PM (Thu 27th Aug) | 4.5ft (1.4m) 6s |
| Most Powerful | 4PM (Thu 27th Aug) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s happening at Rhos-On-Sea over these 16 days. I’ll be honest: it’s grim. The forecast is a long stretch of flatness and weak, short-period junk. Don’t expect much.
We start on Friday, 21 August, with a tiny 2ft swell from the NW, period of 5 seconds. That’s barely a bump, with combined wave energy of just 15—weak stuff. The wind is glassy in the morning, but the surf is marked poor. Not worth it. Saturday and Sunday are flat, no swell height recorded. The wind is clean at times, but there’s nothing to ride.
Monday, 24 August through the end of the month is mostly empty. We get small pulses of 1ft to 3ft from the east and southeast, with periods of 3-4 seconds. Combined energy values are as low as 1 to 28—negligible. Wind is often cross-on or choppy. This is more of a kite-surfing setup than a surfing one.
Into the second week, most days are flat. On Thursday, 3 September, there’s finally a pulse: a 5ft swell from the NNE, period of 6 seconds, and combined energy of 161—moderate energy. But the short period means weak, crumbling waves. The wind is clean cross-offshore, so it’ll be pretty, but the surf quality is still poor. It’s only for the patient on a log.
Friday, 4 September, drops back to 2ft and 1ft. Then it’s flat again through 5 September.
Water temp on that first Friday is 67°F, which is 7° warmer than usual for this time of year. That’s very unusual—feels like a warm bath.
There are no real standouts here. Thursday, 3 September is the best of a bad bunch, but that’s not saying much. Rhos-On-Sea is an inconsistent point break, and this kind of blank run is pretty normal for the area. Forecasts can shift, but for now, leave the board in the car.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri night. Warm (max 21°C on Mon morning, min 11°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Wed night. Warm (max 23°C on Tue afternoon, min 13°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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) | NW 4 | NW 4 | NW 5 | NW 5 | NW 5 | NNW 4 | NNW 4 | — | ESE 3 | E 3 | E 4 | E 4 | ENE 4 | E 4 | ESE 3 | W 6 | SW 4 | ESE 3 | WNW 7 | WNW 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 7 | 8 | 0 | 0 | 35 | 7 | 1 | 0 | 5 | 2 | 17 | 27 | 10 | 21 | 2 | 0 | 0 | 3 | 346 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-off | cross | glassy | cross | cross-off |
High Tide | 6:02PM5.25m | 6:46AM5.11m | 7:28PM5.17m | 8:12AM5.13m | 8:45PM5.41m | 9:18AM5.40m | 9:41PM5.82m | 10:07AM5.77m | 10:24PM6.29m | 10:47AM6.17m | 11:01PM6.75m | 11:22AM6.54m | 11:35PM7.15m | |||||||
Low Tide | 00:27AM2.59m | 1:05PM2.71m | 1:54AM2.64m | 2:29PM2.62m | 3:12AM2.37m | 3:35PM2.27m | 4:08AM1.93m | 4:23PM1.83m | 4:51AM1.44m | 5:02PM1.39m | 5:29AM0.97m | 5:38PM1.00m | ||||||||
 |  | |  |  | | | | | |  |  | | | |  | | | |  | |
 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — |
 | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:21 | — | — | 8:19 | — | — | 8:16 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | 1 | 15 |
Temp °C | 16 | 13 | 15 | 15 | 13 | 16 | 16 | 13 | 21 | 22 | 17 | 21 | 23 | 18 | 22 | 23 | 17 | 18 | 17 | 14 |
Feels °C | 13 | 12 | 11 | 12 | 11 | 14 | 14 | 13 | 17 | 18 | 13 | 17 | 20 | 15 | 20 | 22 | 16 | 16 | 16 | 13 |
Swell 1 Height (m) Direction Period (s) | — | NW 4 | — | — | — | NNW 4 | NNW 4 | — | — | — | — | — | — | — | NE 4 | — | SW 4 | W 4 | — | — |
| kJ | — | 8 | — | — | — | 7 | 1 | — | — | — | — | — | — | — | 1 | — | 3 | 1 | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | SW 7 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 4 | — | NW 5 | NW 5 | NW 5 | — | — | — | ESE 3 | E 3 | E 4 | E 4 | ENE 4 | E 4 | ESE 3 | — | — | ESE 3 | WNW 7 | WNW 5 |
| kJ | 7 | — | 19 | 18 | 35 | — | — | — | 5 | 2 | 17 | 27 | 10 | 21 | 2 | — | — | 3 | 346 | 45 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 242 | 200 | 194 | 242 | 194 | 226 | 260 | 188 | 268 | 278 | 275 | 271 | 268 | 330 | 244 | 242 | 230 | 69 | 268 | 75 |
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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