Surf Forecasts:
Rhos-On-Sea surf forecast from 15 Aug 2026:
- Best quality surf: Friday 21 Aug, 4AM (local time) - 4.5ft (1.4m), 6s period, NW swell with cross-offshore winds.
- Most powerful swell: Friday 21 Aug, 4AM (local time) - 4.5ft (1.4m), 6s period, NW swell with 127 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 4AM (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 Friday (Aug 21) at 4AM. 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 1.4m 6s and forecast to arrive on Friday (Aug 21) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Thursday (Aug 20) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 21st Aug) | 4.5ft (1.4m) 6s |
| Best Surf | 4AM (Fri 21st Aug) | 4.5ft (1.4m) 6s |
| Most Powerful | 4AM (Fri 21st Aug) | 4.5ft (1.4m) 6s |
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's on the menu for Rhos-On-Sea.
Right off the bat, I gotta be straight with you – the next couple of weeks are looking pretty flat and bleak for this part of the coast. We're staring down a long, dry spell with barely a ripple worth paddling for. The first real sniff of anything rideable doesn't come until Friday the 21st of August.
So the story is: you can pretty much write off the whole first week. Saturday 15th through to Thursday the 20th is a total washout. We're talking no swell to speak of, just a little wind chop on the first weekend that's not worth your time. It's not going to be a fun time staring at a flat ocean.
The only faint glimmer of hope shows up on Friday morning the 21st. The swell finally makes an appearance, but don't get too excited. We're looking at a weak, short-period swell pushing in from the NW at about 4 ft. The energy is low (86), and the period is a snappy 6 seconds, which means the waves will be a bit on the soft, lumpy side. The wind is a clean cross-offshore, which is a positive, just enough to keep the surface tidy. This is a very ordinary, slight step up from flat, and honestly, it's still a tough sell. This is for the intermediate surfers who are desperate. Beginners might find it too small and weak to be any fun.
After that brief hiccup on Friday, it’s a ghost town again. From Saturday the 22nd morning right through to the end of the forecast on Sunday the 30th of August, there's literally *no* surfable swell on the cards. That's over a week of zero wave energy.
The setup here is just not on at all. The main break, Rhos-On-Sea, is a point break that's only inconsistent and rarely gets a decent push. This long stretch of nothing is more normal for the area than a classic run of swell. There's no standout session, no hidden gem, nothing to get the heart racing. It’s a blank, disappointing run.
Stay patient, keep an eye on the charts, things can change.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Sun afternoon, min 12°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Mon night. Very mild (max 18°C on Tue morning, min 13°C on Tue night). Winds increasing (light winds from the WSW on Tue night, fresh winds from the W by Thu morning). | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | NNW 4 | NNW 4 | NNW 4 | NNW 3 | N 3 | WSW 3 | WNW 3 | W 4 | SW 4 | W 4 | WNW 4 | W 3 | W 5 | WSW 5 | W 6 | W 6 | W 5 | NW 5 | NW 6 | NW 5 | NNW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 29 | 22 | 13 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 86 | 42 | 56 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | glassy | cross | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross |
High Tide | 1:25PM7.44m | 1:39AM7.95m | 2:04PM7.23m | 2:19AM7.60m | 2:43PM6.91m | 2:59AM7.10m | 3:22PM6.49m | 3:41AM6.52m | 4:04PM6.03m | 4:27AM5.92m | 4:54PM5.59m | 5:26AM5.41m | 6:02PM5.25m | ||||||||
Low Tide | 7:34AM-0.26m | 7:45PM0.26m | 8:13AM-0.02m | 8:24PM0.50m | 8:51AM0.40m | 9:02PM0.87m | 9:29AM0.94m | 9:42PM1.32m | 10:08AM1.51m | 10:25PM1.81m | 10:52AM2.05m | 11:17PM2.27m | 11:49AM2.49m | 00:27AM2.59m | |||||||
 | |  | |  |  | | |  | | | | | |  |  | |  | |  | | |
 | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — |
 | — | 8:44 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — |
mm | — | — | — | — | — | — | — | — | 10 | — | — | 8 | — | — | 1 | 3 | 2 | 3 | — | — | — |
Temp °C | 15 | 16 | 14 | 16 | 17 | 16 | 17 | 17 | 17 | 18 | 18 | 16 | 17 | 17 | 16 | 15 | 16 | 13 | 16 | 16 | 12 |
Feels °C | 12 | 13 | 14 | 15 | 15 | 16 | 16 | 16 | 17 | 15 | 15 | 15 | 12 | 12 | 11 | 10 | 13 | 11 | 13 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | — | — | — | NNW 3 | N 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 4 | NNW 4 | NNW 4 | — | NNW 3 | WSW 3 | WNW 3 | W 4 | SW 4 | W 4 | WNW 4 | W 3 | W 5 | WSW 5 | W 6 | W 6 | W 5 | NW 5 | NW 6 | NW 5 | NNW 5 |
| kJ | 29 | 22 | 13 | — | 1 | 4 | 2 | 6 | 14 | 10 | 11 | 8 | 42 | 75 | 134 | 205 | 97 | 100 | 86 | 42 | 56 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 377 | 432 | 283 | 275 | 323 | 262 | 268 | 273 | 446 | 379 | 434 | 238 | 243 | 498 | 283 | 254 | 514 | 186 | 0 | 268 | 245 |
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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