Surf Forecasts:
Rhos-On-Sea surf forecast from 20 Aug 2026:
- Most powerful swell: Tuesday 25 Aug, 10PM (local time) - 3.5ft (1.1m), 4s period, E swell with 50 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 1.1m 4s and forecast to arrive on Tuesday (Aug 25) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Aug 26) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Tue 25th Aug) | 3.5ft (1.1m) 4s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright, let’s talk about it in feet and degrees for the imperial crew.
Honestly, this is a tough one for Rhos-On-Sea. We’ve got a 16-day window staring at us, and for the first chunk, it’s pretty much a write-off for proper waves. The surf is just tiny, wonky, or blown out. There’s a real gap here.
The first few days, from the 20th of August right through the end of the month, are all about "poor surf conditions." The swell is tiny – mostly below 2ft – with short periods and weak energy. The combined swell energy is in the single digits or low tens (31 being the highest early on), which is barely enough to get excited about. The water temp is 67°, which is a massive 7° warmer than usual for this time of year – that’s very unusual, almost like a warm bath, but it doesn’t help the surf.
We finally see a tiny flicker of life on the 2nd of September. A little NW swell shows up. The morning of the 2nd, we’ve got about 3ft from the NW with a period of 5 seconds, and the combined energy is a meager 26. The wind is clean, cross-off from the WNW, so the surface will look tidy. But the swell is short-period and small. It’s not a standout, just the best of a bad bunch.
Then it looks like it fades out again into the 3rd and 4th of September with zero swell.
So, if you’re desperate, the morning of the 2nd of September is your only real shot. The wind is clean, which is a major positive, so it won’t be a total mess. The point break here (Rhos-On-Sea) is described as inconsistent, so that checks out. Don’t expect much, but if you’ve got a longboard, you might find a few knee-high crumbly ones. For most of the rest of the forecast, it’s flat. This kind of blank run is more normal for the area during these quiet spells.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Thu afternoon. Very mild (max 16°C on Fri morning, min 11°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Wed morning. Warm (max 23°C on Mon afternoon, min 12°C on Sun night). Winds increasing (calm on Sun night, fresh winds from the E by Tue afternoon). | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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) | N 5 | NW 5 | NW 5 | NW 4 | NW 4 | NW 5 | NW 5 | NW 4 | NW 4 | NNW 4 | — | ESE 2 | ENE 3 | ESE 4 | E 4 | ENE 4 | E 5 | SE 3 | WSW 4 | WSW 3 |
Wave Graph  | ||||||||||||||||||||
 kJ | 31 | 23 | 16 | 5 | 5 | 14 | 0 | 13 | 8 | 2 | 0 | 1 | 3 | 38 | 28 | 22 | 42 | 2 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | glassy | cross-on | cross-off | cross-off | cross | cross-off | cross | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | cross | cross-off | glassy | cross |
High Tide | 4:54PM5.59m | 5:26AM5.41m | 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 | |||||||
Low Tide | 11:17PM2.27m | 11:49AM2.49m | 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 | ||||||||
 |  |  |  |  | |  |  | | | | | | |  | | |  | | | |
 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 8:32 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:21 | — | — | 8:19 | — |
mm | 3 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 4 | 4 | — |
Temp °C | 14 | 13 | 16 | 16 | 13 | 15 | 15 | 13 | 16 | 16 | 13 | 22 | 23 | 17 | 19 | 22 | 18 | 19 | 19 | 14 |
Feels °C | 12 | 11 | 14 | 13 | 11 | 12 | 12 | 12 | 14 | 14 | 12 | 17 | 19 | 12 | 15 | 17 | 13 | 19 | 20 | 13 |
Swell 1 Height (m) Direction Period (s) | ENE 4 | NW 5 | NW 5 | NW 4 | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 4 | WSW 3 |
| kJ | 3 | 23 | 16 | 5 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 5 | — | — | — | — | NW 5 | NW 5 | NW 4 | NW 4 | NNW 4 | — | ESE 2 | ENE 3 | ESE 4 | E 4 | ENE 4 | E 5 | SE 3 | — | — |
| kJ | 31 | — | — | — | — | 14 | 11 | 13 | 8 | 2 | — | 1 | 3 | 38 | 28 | 22 | 42 | 2 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 514 | 191 | 196 | 242 | 240 | 186 | 242 | 194 | 206 | 310 | 188 | 268 | 279 | 268 | 339 | 349 | 322 | 238 | 193 | 78 |
Best forecast wave conditions in North Wales | ||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rhos-On-Sea surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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