
Surf Forecasts:
Fishermans (Rhiw) surf forecast from 11 Aug 2026:
- Most powerful swell: Friday 14 Aug, 1AM (local time) - 3ft (0.9m), 5s period, WSW swell with 47 kJ wave energy.
Best Forecast Surf Conditions for Fishermans (Rhiw) this week:
The most powerful waves expected at Fishermans (Rhiw) in the next 16 days are 0.9m 5s and forecast to arrive on Friday (Aug 14) at 1AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Aug 15) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Fri 14th Aug) | 3ft (0.9m) 5s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s on the cards for Fishermans (Rhiw). I’m not gonna sugarcoat it – this is one of those stretches where you might be better off checking your wax collection than paddling out. The whole 16-day window is looking pretty bleak, with no surf worth getting the car wet for.
Kicking off from Tuesday, 11th August, it’s flat. Swell’s only 0.3ft with a short 6-second period and the combined energy is a measly 3. Wind’s cross-on from the SSE at 9 mph, making it a choppy mess. That sets the tone for the next week. Wednesday the 12th sees a tiny bump to 0.7ft from the WSW with a 10-second period, but the energy is still only 11 and the surf is poor. Thursday the 13th is a bit bigger at 1ft from the SW with an 8-second period and 17 energy, but it’s onshore and messy again. Friday the 14th has 2ft with a ridiculous 5-second period – that’s just whitewash. Saturday the 15th and Sunday the 16th are back down to tiny 1ft and 0.3ft. The wind turns offshore on Sunday the 16th and Monday the 17th, but there’s no swell to work with. The combined energy is dropping as low as 1. It’s a total bust for a solid week.
Then things get weird. Tuesday the 18th and Wednesday the 19th have some activity, but it’s still poor. The highlight – and I use that word loosely – is Friday the 21st of August. Swell jumps to 5ft from the W with a 5-second period. The combined energy is a moderate 131. That’s a whole lot of water moving, but with a period that short, it’s just lumpy and weak. By the afternoon it’s 6ft from the WSW, and the energy hits 206, so there is power there. But the wind is cross-on, 6 mph from the WSW. For a reef break, that short-period stuff just walls up and closes out. It’s not beginner-friendly either – anything over 5ft starts to push the limits. This would be more of a kite surfing day, honestly.
After that, it drops off again. Saturday the 22nd has 4ft with onshore winds, and by Sunday the 23rd we’re back to 0.3ft with long-period 15-second groundswell, but the wind is a choppy cross-on at 16 mph. The energy is only 12. That long-period swell would be great at a point break or reef, but the wind just ruins it.
The last few days, through to Wednesday the 26th, are a dead zone. Tiny 0.3ft, with even a glassy morning on the 26th offering nothing. The water temperature is about average for the time of year, nothing unusual there.
So, there’s no standout. The only day that even remotely raises an eyebrow is Friday the 21st of August, with that 5ft to 6ft of swell from the west. The combined energy (131 to 206) shows it has some push, but the short period and the onshore tendencies will make it a messy, frustrating session for anyone but the most desperate. The break is fairly consistent, but the quality just isn’t there. Don’t hold your breath for this one.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Wed afternoon, min 16°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sun afternoon. Very mild (max 18°C on Thu night, min 13°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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) | SW 6 | SW 6 | W 11 | WSW 10 | WSW 10 | WSW 9 | SW 8 | SW 8 | WSW 5 | WSW 5 | SW 5 | SW 5 | SW 7 | SW 6 | WSW 7 | SW 7 | SW 7 | SW 7 | W 7 | W 7 | W 6 |
Wave Graph | |||||||||||||||||||||
2 | 2 | 3 | 10 | 9 | 16 | 17 | 14 | 47 | 17 | 14 | 7 | 14 | 5 | 5 | 2 | 2 | 2 | 1 | 1 | 1 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-off | on | on | on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | off | off | off |
High Tide | 7:42AM3.57m | 8:04PM3.98m | 8:33AM3.80m | 8:52PM4.29m | 9:19AM3.95m | 9:37PM4.49m | 10:02AM4.03m | 10:19PM4.55m | 10:42AM4.01m | 11:00PM4.46m | 11:22AM3.91m | 11:40PM4.24m | 12:01PM3.72m | 00:20AM3.91m | |||||||
Low Tide | 2:46PM0.49m | 3:18AM0.13m | 3:32PM0.26m | 4:04AM-0.10m | 4:15PM0.11m | 4:46AM-0.19m | 4:54PM0.07m | 5:26AM-0.15m | 5:32PM0.14m | 6:03AM0.03m | 6:09PM0.29m | 6:39AM0.30m | 6:44PM0.52m | ||||||||
5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | |
— | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 3 | — | — | — | — |
Temp °C | 20 | 21 | 21 | 22 | 24 | 23 | 20 | 21 | 18 | 16 | 18 | 17 | 16 | 16 | 16 | 14 | 13 | 15 | 18 | 19 | 16 |
Feels °C | 18 | 21 | 21 | 20 | 21 | 22 | 21 | 21 | 17 | 14 | 16 | 14 | 12 | 13 | 14 | 12 | 9 | 12 | 14 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 6 | — | WSW 10 | WSW 10 | WSW 9 | SW 8 | SW 8 | SW 9 | WSW 5 | SW 5 | SW 5 | SW 7 | SW 6 | WSW 7 | SW 7 | SW 7 | SW 7 | W 7 | W 7 | — |
2 | 2 | — | 10 | 9 | 16 | 17 | 14 | 3 | 17 | 14 | 7 | 14 | 5 | 5 | 2 | 2 | 2 | 1 | 1 | — | |
Swell 2 Height (m) Direction Period (s) | — | — | SW 6 | SW 6 | SW 6 | — | — | WSW 9 | — | SW 8 | NW 4 | WSW 8 | SW 7 | SW 7 | — | — | W 7 | — | — | — | W 6 |
— | — | 1 | 1 | 1 | — | — | 9 | — | 3 | 4 | 6 | 2 | 2 | — | — | 1 | — | — | — | 1 | |
Swell 3 Height (m) Direction Period (s) | — | — | W 11 | — | — | — | — | — | — | — | W 8 | — | — | — | — | — | — | W 7 | — | — | — |
— | — | 3 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 1 | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 2 | — | — | — | — | — | — | WSW 3 | WSW 5 | NW 4 | — | NNW 3 | NW 4 | NW 4 | NW 4 | N 3 | NNW 3 | N 3 | — | — | — |
1 | — | — | — | — | — | — | 1 | 47 | 9 | — | 1 | 14 | 7 | 2 | 1 | 3 | 1 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 309 | 331 | 114 | 114 | 129 | 129 | 129 | 313 | 142 | 142 | 303 | 114 | 129 | 308 | 305 | 297 | 328 | 319 | 302 | 308 | 216 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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Information about the Fishermans (Rhiw) Surf forecast
The above surf forecast table for Fishermans (Rhiw) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Fishermans (Rhiw) can be found by selecting the local surf guide option on the grey menu. Our Fishermans (Rhiw) 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 (Fishermans (Rhiw)) 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 Fishermans (Rhiw) 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.
Are you planning a holiday in Lleyn Peninsula? If you are looking for accommodation near Fishermans (Rhiw), camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 34 km (21 miles) away. Other places in and around Lleyn Peninsula where you can find information about places to rent, and car hire include Anglesey which is 48 km (30 miles) away, Holyhead, Aberystwyth and Bangor.











