Surf Forecasts:
Rhos-On-Sea surf forecast from 28 Aug 2026:
- Most powerful swell: Monday 31 Aug, 7PM (local time) - 1.5ft (0.5m), 5s period, NNW swell with 12 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 0.5m 5s and forecast to arrive on Monday (Aug 31) at 7PM. 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 Sunday (Aug 30) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Mon 31st Aug) | 1.5ft (0.5m) 5s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Right then, let's have a look at what’s on offer for Rhos-On-Sea over the next sixteen days. I gotta be straight with you, it’s a bit of a flat spell for the most part. The swell energy is just not there, with combined energy readings mostly sitting at single-digit, weak values. There are a couple of windows where something might show, but you’ll need to be patient.
The water temperature is sitting at 66°, which is about 6° warmer than what’s normal for this time of year – that’s well above average, very unusual for August. The whole setup is a bit off.
Now, looking through the period, the first real glimmer of something rideable doesn’t appear until Monday the 7th of September. Even then, it’s hardly a classic. The swell comes in from the NW at 6 ft, with a period of 6 seconds – that’s short period, windswell stuff, not the kind of groundswell that wraps around nicely. The combined wave energy hits 191 (moderate). The wind is light and cross-off from the WNW, so it will be clean, but the waves will be a bit fat and without much punch. It’s surfable for an intermediate, but it’s very ordinary. This is the only notable window in the whole outlook, and it’s over a week away.
For the rest of the days, there’s barely a ripple. From now until Sunday the 6th of September, you’re looking at a long, barren run with no surf to speak of. A few days show glassy or clean conditions, like the 29th of August afternoon, but with zero swell, it’s flat as a pancake. Later, around Wednesday the 2nd of September, you get a tiny 1 ft bump, but with a period of 4 seconds and a cross-shore wind, it’s just a mess. The same goes for the week after the 7th – very little energy, mostly flat.
So, if you’re desperate, keep an eye on Monday the 7th of September. The break is Rhos-On-Sea itself, a point break that is inconsistent and fairly exposed to that NW swell. It’s not going to be pumping, but it’ll be the best of a very quiet period. For the rest of it, save your energy and wait for the next system.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Sat morning. Warm (max 20°C on Sat afternoon, min 13°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Tue afternoon. Very mild (max 18°C on Tue morning, min 12°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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) | W 3 | NW 4 | SW 4 | WSW 3 | ESE 3 | WNW 6 | NNW 4 | W 4 | WSW 6 | WNW 4 | WNW 5 | W 4 | W 4 | W 4 | NW 4 | NNW 4 | NNW 4 | WSW 6 | W 5 | WSW 4 | WSW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | 3 | 1 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-on | glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off |
High Tide | 11:55AM6.86m | 00:07AM7.46m | 12:27PM7.11m | 00:39AM7.65m | 1:00PM7.25m | 1:13AM7.70m | 1:34PM7.27m | 1:49AM7.60m | 2:10PM7.16m | 2:27AM7.34m | 2:50PM6.90m | 3:10AM6.94m | 3:36PM6.52m | ||||||||
Low Tide | 6:04AM0.58m | 6:12PM0.69m | 6:37AM0.31m | 6:46PM0.51m | 7:10AM0.18m | 7:20PM0.45m | 7:44AM0.20m | 7:55PM0.52m | 8:20AM0.38m | 8:33PM0.72m | 8:58AM0.71m | 9:14PM1.04m | 9:42AM1.15m | 10:03PM1.44m | |||||||
 |  |  |  |  |  |  | | | | | | | | | | | | | |  | |
 | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — |
 | — | 8:15 | — | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — |
mm | 1 | 1 | — | 9 | — | 1 | — | 1 | 4 | 1 | — | — | 1 | 6 | — | — | — | — | — | — | 2 |
Temp °C | 17 | 18 | 17 | 18 | 20 | 15 | 19 | 17 | 14 | 16 | 17 | 15 | 18 | 17 | 13 | 15 | 15 | 16 | 19 | 20 | 19 |
Feels °C | 15 | 17 | 16 | 17 | 20 | 11 | 18 | 16 | 12 | 11 | 13 | 12 | 14 | 13 | 10 | 12 | 12 | 15 | 18 | 16 | 15 |
Swell 1 Height (m) Direction Period (s) | — | — | — | WSW 3 | ESE 3 | — | WSW 4 | W 4 | WSW 6 | W 8 | — | — | — | — | — | NNW 4 | NNW 4 | — | — | — | — |
| kJ | — | — | — | 1 | 2 | — | 6 | 2 | 4 | 1 | — | — | — | — | — | 3 | 1 | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | W 6 | — | — | NNW 4 | — | — | W 11 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 1 | — | — | 3 | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 6 | — | W 9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 1 | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 3 | NW 4 | SW 4 | — | — | WNW 6 | — | — | SW 3 | WNW 4 | WNW 5 | W 4 | W 4 | W 4 | NW 4 | — | — | WSW 6 | W 5 | WSW 4 | WSW 4 |
| kJ | 8 | 12 | 8 | — | — | 153 | — | — | 1 | 28 | 70 | 10 | 21 | 30 | 9 | — | — | 114 | 42 | 22 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 230 | 240 | 230 | 53 | 359 | 75 | 230 | 238 | 241 | 283 | 293 | 262 | 320 | 514 | 186 | 186 | 283 | 94 | 238 | 254 | 283 |
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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