Surf Forecasts:
Rhos-On-Sea surf forecast from 6 Aug 2026:
- Most powerful swell: Thursday 6 Aug, 7PM (local time) - 2ft (0.6m), 5s period, NNW swell with 15 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 0.6m 5s and forecast to arrive on Thursday (Aug 06) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Thursday (Aug 06) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Thu 6th Aug) | 2ft (0.6m) 5s |
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 cooking for Rhos-On-Sea.
Honestly, it’s a tough start. We’re looking at a long dry spell. From now until the 18th of August, there’s just nothing doing. Flat spells don’t get much more stubborn than this, with a big gap of no surf worth talking about for over a week. The water is sitting at 65.8°, which is a massive 6.1° warmer than usual for this time of year – that’s very unusual, and it’ll feel like a warm bath.
We finally see a bit of life kick in on the morning of Tuesday the 18th. A small NW swell pushes through at 3 ft, with a short period of 5 seconds, and a weak combined energy of 37. The wind is cross-off from the WNW at 22 mph, so it’ll be messy and blown out. Not one for the board.
The only flicker of something rideable happens on the afternoon of Wednesday the 19th. The swell bumps up to 4.3 ft from the NW, with a period of 5 seconds, and the energy reading at 89 is still weak. The wind goes light cross-off from the S at 9 mph, giving us clean conditions. But it’s surfable in a very ordinary, “make the most of it” kind of way. The break itself is a point, which is inconsistent at the best of times, and with the swell direction from the NW, it’s hitting the optimum, so it might just line up.
Then on Friday the 21st of August, we get the best wave of the whole run. The morning sees a 4.9 ft NW swell with a 6-second period, and the combined energy hits 148 – that’s moderate energy, finally something with a bit of push. The wind is cross-off from the WSW at 9 mph, keeping it clean. The afternoon backs off a touch to 3.9 ft. This is the standout. For a spot that’s inconsistent, this is a rare little window of proper surf. The swell direction is bang on the optimum for the point, and with the light wind, it’ll be the cleanest and most lined-up it gets. Still not huge, but for Rhos-On-Sea, this is the one to aim for.
Short Range ForecastMostly dry. Warm (max 23°C on Sat afternoon, min 12°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Tue morning, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | NW 6 | NW 5 | NNW 4 | W 3 | WNW 3 | WNW 3 | WSW 3 | WSW 4 | WSW 3 | WSW 4 | W 3 | — | W 3 | WNW 3 | — | ESE 3 | ENE 2 | ESE 3 | — | — | WSW 2 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 4 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | off | cross-off | off | cross | off | cross-on | cross-on | glassy | cross | cross | cross-off | glassy | glassy | cross-off |
High Tide | 5:00PM6.06m | 5:28AM6.11m | 6:10PM5.85m | 6:46AM5.91m | 7:30PM5.89m | 8:09AM6.00m | 8:47PM6.21m | 9:22AM6.33m | 9:50PM6.72m | 10:23AM6.75m | 10:44PM7.27m | 11:15AM7.14m | 11:32PM7.74m | ||||||||
Low Tide | 11:01AM1.48m | 11:26PM1.85m | 12:05PM1.78m | 00:40AM2.01m | 1:23PM1.91m | 2:06AM1.90m | 2:45PM1.76m | 3:24AM1.49m | 3:54PM1.38m | 4:29AM0.91m | 4:51PM0.93m | 5:22AM0.36m | 5:40PM0.54m | ||||||||
 | |  |  | | | | | | | | |  | |  | | | | | | | |
 | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — | 5:45 | — | — | 5:47 | — | — | 5:48 | — | — |
 | — | — | 9:01 | — | — | 9:00 | — | 8:58 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 17 | 13 | 19 | 19 | 14 | 22 | 23 | 14 | 21 | 22 | 17 | 19 | 19 | 15 | 24 | 24 | 18 | 25 | 26 | 19 |
Feels °C | 11 | 14 | 10 | 16 | 16 | 12 | 21 | 21 | 11 | 19 | 21 | 17 | 18 | 18 | 15 | 25 | 23 | 17 | 25 | 25 | 18 |
Swell 1 Height (m) Direction Period (s) | — | — | NNW 4 | — | — | WNW 3 | WSW 3 | WSW 4 | W 5 | — | — | — | — | — | — | — | — | E 3 | — | — | — |
| kJ | — | — | 2 | — | — | 2 | 1 | 2 | 2 | — | — | — | — | — | — | — | — | 3 | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 6 | NW 5 | WSW 4 | W 3 | WNW 3 | WSW 3 | — | — | WSW 3 | WSW 4 | W 3 | — | W 3 | WNW 3 | — | ESE 3 | ENE 2 | ESE 3 | — | — | WSW 2 |
| kJ | 114 | 38 | 8 | 2 | 2 | 2 | — | — | 8 | 5 | 2 | — | 5 | 2 | — | 1 | 1 | 4 | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 226 | 230 | 226 | 230 | 240 | 244 | 275 | 268 | 254 | 283 | 275 | 283 | 275 | 268 | 321 | 238 | 323 | 188 | 183 | 230 | 186 |
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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