Surf Forecasts:
Rhos-On-Sea surf forecast from 13 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 10AM (local time) - 4ft (1.2m), 5s period, NNW swell with 74 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 1.2m 5s and forecast to arrive on Saturday (Aug 15) at 10AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Tuesday (Aug 18) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Sat 15th Aug) | 4ft (1.2m) 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 brewing for Rhos-On-Sea. I gotta be straight with you—this 16-day window is not kind to us. The long-range models are showing a pretty bleak run of surf. The good news is, this sort of flat spell isn't unusual for the area, so don't bin your boards just yet. We're looking at over a week of nothing worth paddling out for before we even get a sniff of a wave.
Okay, so from Thursday the 13th through to Wednesday the 19th, it’s a total write-off. The swell is completely absent with the combined wave energy sitting at a pathetic 0. You've got a couple of days of glassy mornings, like Thursday the 13th and Monday the 17th, but there’s simply nothing to surf. It’s a flat calm, mirror-like ocean with zero energy. The water temp on that first Thursday sits at 66°, which is a massive 6° warmer than normal for this time of year—very unusual, almost like bathwater, but still no waves.
We finally get a pulse on Thursday the 20th. The morning shows a little bump of 4ft from the NW, with a period of just 5 seconds. That's a weak, short-period windswell. The combined energy is 94, which is still very weak. Winds will be a clean cross-off from the WNW, but honestly, it’s just "surfable waves but very ordinary conditions". It’s the best we’ve got, but that’s not saying much. The break is an inconsistent point, and with that short period and small size, it's going to be pretty gutless.
From Friday the 21st, it’s back to tiny, poor quality slop and then more flatness. We get a few days of 1ft to 3ft from the east, but it’s plagued by cross-onshore winds from the 24th onwards, making it choppy and lumpy. The combined energy never gets above 75. The window closes with more onshore wind and clean, tiny 2ft leftovers.
Honestly, there's no single standout session here. If you’re desperate for a paddle, Thursday the 20th morning is the only time with any swell and clean-ish wind, but expect weak, crumbly waves. Don't get your hopes up.
- Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 12°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Tue morning. Very mild (max 18°C on Wed morning, min 12°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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) | — | WSW 2 | WSW 3 | NW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 4 | NNW 4 | NNW 3 | SSW 2 | WSW 3 | WSW 4 | W 4 | W 4 | WNW 4 | W 4 | W 5 | W 4 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 30 | 74 | 39 | 22 | 9 | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross-off | cross-off | off | glassy | cross-on | off | cross-off | cross-off | off | off | cross-off | off |
High Tide | 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 | 4:04PM6.03m | ||||||||
Low Tide | 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 | 10:08AM1.51m | 10:25PM1.81m | |||||||
 |  | | |  |  |  | | |  | | | |  |  | | | | |  | |
 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — |
 | 8:47 | — | — | 8:45 | — | — | 8:44 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 7 | 7 | — | — | — | — | — |
Temp °C | 26 | 20 | 21 | 17 | 16 | 15 | 15 | 13 | 15 | 14 | 13 | 16 | 17 | 15 | 17 | 17 | 16 | 18 | 19 | 15 |
Feels °C | 25 | 22 | 21 | 17 | 14 | 11 | 11 | 12 | 13 | 14 | 12 | 17 | 17 | 15 | 17 | 17 | 14 | 14 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NNW 3 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | WSW 2 | WSW 3 | NW 4 | NNW 5 | NNW 5 | NNW 5 | NNW 5 | NNW 4 | NNW 4 | — | SSW 2 | WSW 3 | WSW 4 | W 4 | W 4 | WNW 4 | W 4 | W 5 | W 4 |
| kJ | — | 1 | 4 | 12 | 30 | 74 | 39 | 22 | 9 | 5 | — | 1 | 4 | 46 | 16 | 28 | 20 | 37 | 34 | 9 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 311 | 186 | 196 | 592 | 254 | 781 | 592 | 283 | 275 | 279 | 323 | 268 | 271 | 97 | 75 | 75 | 75 | 196 | 555 | 362 |
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.
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