Surf Forecasts:
Rhos-On-Sea surf forecast from 12 Aug 2026:
- Most powerful swell: Sunday 16 Aug, 4AM (local time) - 3.5ft (1.1m), 5s period, NNW swell with 64 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 5s and forecast to arrive on Sunday (Aug 16) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Wednesday (Aug 19) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4AM (Sun 16th Aug) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Rhos-On-Sea over the next 16 days.
The Lowdown
Alright, let’s cut to it. Looking at the full 16-day picture for Rhos-On-Sea, and this is a lean stretch. Right off the bat, we’re looking at a solid block of nothing – flat, crumbly, and cross-shore. The first several days are a write-off. No real swell, just weak slop with poor winds.
The first proper sign of life pops up on Wednesday, August 20th. A bump of swell rolls in – about 6 ft from the northwest, period around 7 seconds. That’s some push, but it’s coming with a cross-onshore wind, so expect lumpy, harder-to-surf conditions. Not a clean day, but it’s the biggest we’ll see for a while. Energy on that one reads around 296 – moderate, enough to get a bit of a work-out.
After that, it fades fast. Back down to 2 ft or less through the weekend, just short-period junk with cross-shore breezes chopping things up. Not worth suiting up unless you just want to float around.
Monday the 24th brings a tiny clean-up – 1 ft from the southeast with a light cross-off breeze. That’s a glassy little knee-slapper, but barely a wave.
The one bright spot in all this looks like Tuesday the 25th. We get a similar height – around 3 ft from the northwest – but with lighter winds, cross-off in the morning and still clean in the afternoon. That’s your best bet for something semi-decent. Still small, but at least ridable.
Look, this is a grim outlook for Rhos-On-Sea. It’s an inconsistent break even when things are good, and this stretch ain’t good. No real groundswell, no periods over 8 seconds. Just short-period, wind-driven slop. Maybe the tiniest of windows on the 25th for a few clean ones, but that’s it. Water temp is about 66°, which is a few degrees warmer than normal – feels nice, but it won’t save the surf.
So keep your expectations low. If you’re desperate, check the 25th. Otherwise, give it a miss and wait for the next system. Forecasts can change, but as it stands, this one’s a skunk.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed afternoon, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Mon morning. Very mild (max 18°C on Mon afternoon, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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) | SE 3 | — | — | — | — | SW 3 | W 4 | NW 4 | NNW 4 | NNW 5 | NNW 4 | NNW 5 | NW 5 | NW 5 | NW 4 | NNW 4 | — | ESE 3 | — | WSW 3 | W 4 |
Wave Graph | |||||||||||||||||||||
2 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 29 | 35 | 22 | 61 | 49 | 25 | 15 | 1 | 0 | 2 | 0 | 0 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | off | glassy | cross | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 11:15AM7.14m | 11:32PM7.74m | 12:01PM7.40m | 00:17AM8.03m | 12:44PM7.50m | 00:59AM8.11m | 1:25PM7.44m | 1:39AM7.95m | 2:04PM7.23m | 2:19AM7.60m | 2:43PM6.91m | 2:59AM7.10m | 3:22PM6.49m | 3:41AM6.52m | |||||||
Low Tide | 5:40PM0.54m | 6:10AM-0.07m | 6:24PM0.28m | 6:54AM-0.28m | 7:06PM0.18m | 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 | ||||||||
5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | |
— | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | — | 2 | — | — | 14 |
Temp °C | 28 | 29 | 23 | 27 | 25 | 19 | 19 | 17 | 15 | 15 | 16 | 14 | 15 | 16 | 14 | 16 | 18 | 17 | 19 | 19 | 18 |
Feels °C | 28 | 28 | 22 | 26 | 24 | 20 | 18 | 16 | 13 | 11 | 11 | 11 | 12 | 13 | 12 | 13 | 18 | 15 | 15 | 15 | 17 |
Swell 1 Height (m) Direction Period (s) | ESE 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 4 | — | W 6 | — | — | — |
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | — | — | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 3 | — | — | — | — | SW 3 | W 4 | NW 4 | NNW 4 | NNW 5 | NNW 4 | NNW 5 | NW 5 | NW 5 | NW 4 | — | — | ESE 3 | — | WSW 3 | W 4 |
2 | — | — | — | — | 2 | 6 | 16 | 29 | 35 | 22 | 61 | 49 | 25 | 15 | — | — | 2 | — | 2 | 27 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 239 | 188 | 186 | 194 | 268 | 195 | 196 | 570 | 375 | 620 | 607 | 312 | 312 | 327 | 246 | 327 | 254 | 194 | 245 | 345 | 117 |
Best forecast wave conditions in North Wales | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.











