Surf Forecasts:
Fishermans (Rhiw) surf forecast from 26 Aug 2026:
- Most powerful swell: Saturday 29 Aug, 10PM (local time) - 6ft (1.8m), 9s period, SW swell with 454 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 1.8m 9s and forecast to arrive on Saturday (Aug 29) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Monday (Aug 31) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Sat 29th Aug) | 6ft (1.8m) 9s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright, Rusty here with a look at what's on offer for the next couple of weeks, and I gotta be straight with you – it’s a rough patch. We’re gonna see a heap of days with nothing doing.
Right off the bat, things are flat. From the 25th of August right through to the morning of the 28th, there’s just no surf worth mentioning. A total write-off.
The first sign of life comes on the morning of Friday the 28th. Fishermans (Rhiw) is the only spot in the frame, showing a little pulse of 3 ft swell from the WSW. The period is a short 6 seconds, so not much push, and the combined energy is a weak 106. The wind is light offshore from the NW, so it’ll be clean. It's surfable, but it’s ordinary. That’s the best of a bad bunch for the first week. The water's sitting at 64°, which is a touch warmer than normal for this time of year.
After that, it’s back to the doldrums. From Friday afternoon all the way through the end of the month and into September, it’s a string of days with tiny, weak swell and onshore winds. There's a little bump on Sunday the 30th, but the wind is onshore and the conditions are poor.
We get another whisper of hope on the morning of Saturday the 6th of September. The swell picks up to 4 ft again from the SW, with just a 5-second period. The energy is weak (78), but the wind goes glassy. It’s clean, but still only very ordinary conditions.
Then things get interesting, but not in a good way for paddle surfing. On Monday the 7th of September, a solid 8 ft to 10 ft SW swell rolls in, with energy readings up in the high hundreds (890 and 1159). That’s proper strong. But the wind is absolutely howling onshore – near gale and cross-onshore. The joint will be a churned-up mess. For a reef setup like Fishermans, the swell direction is perfect, but with that wind, this is looking more like a kite-surfing show than a paddling session.
The rest of the second week is more of the same: decent swell energy (136-151) blowing itself out with strong cross-onshore winds and messy conditions. Not one for the logs or shortboards, fellas.
So, to sum it up: the only real chance to get wet is the morning of Friday the 28th and the glassy morning of Saturday the 6th, and even then, it's nothing to write home about. The big end of the run is for the crew with kites, not paddles.
Rusty.
Short Range ForecastHeavy rain (total 39mm), heaviest during Thu afternoon. Warm (max 22°C on Wed afternoon, min 16°C on Thu afternoon). Winds increasing (light winds from the NNE on Wed afternoon, fresh winds from the SSW by Thu night). | Days 4-6 Weather SummaryHeavy rain (total 20mm), heaviest during Fri night. Very mild (max 18°C on Sat morning, min 14°C on Sun night). Winds decreasing (strong winds from the SSW on Sat morning, light winds from the W by Sun night). | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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) | SSW 8 | SSW 8 | SW 7 | SW 12 | W 12 | SSW 4 | SW 6 | SW 7 | SW 5 | SW 6 | SW 7 | SW 9 | SW 9 | SW 9 | SW 7 | SW 7 | SW 5 | SW 6 | WSW 7 | SW 7 | SW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 6 | 6 | 2 | 6 | 3 | 21 | 106 | 73 | 92 | 138 | 347 | 446 | 162 | 61 | 34 | 56 | 65 | 247 | 229 | 104 | 42 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross | on | on | cross-on | on | on | on | cross-on | cross-on | cross-on | on | cross-off | cross | cross-on | cross-on | on | on | on |
High Tide | 8:14AM3.26m | 8:28PM3.66m | 8:46AM3.48m | 8:59PM3.92m | 9:16AM3.67m | 9:29PM4.12m | 9:47AM3.83m | 10:01PM4.26m | 10:18AM3.93m | 10:34PM4.30m | 10:52AM3.97m | 11:09PM4.25m | 11:28AM3.91m | 11:47PM4.09m | |||||||
Low Tide | 2:53PM0.72m | 3:20AM0.50m | 3:26PM0.50m | 3:53AM0.30m | 3:59PM0.35m | 4:26AM0.17m | 4:32PM0.27m | 4:59AM0.12m | 5:04PM0.26m | 5:32AM0.17m | 5:38PM0.34m | 6:05AM0.31m | 6:13PM0.48m | ||||||||
 |  |  |  |  |  |  | |  | | |  | | | | | | | | | | |
 | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 8:22 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — |
mm | — | — | — | 5 | 23 | 9 | 2 | — | 6 | 3 | 1 | — | 5 | 2 | 2 | — | 1 | — | — | — | — |
Temp °C | 20 | 22 | 22 | 17 | 17 | 16 | 17 | 17 | 17 | 18 | 18 | 16 | 16 | 16 | 16 | 14 | 17 | 17 | 16 | 17 | 17 |
Feels °C | 19 | 21 | 21 | 17 | 17 | 13 | 17 | 17 | 14 | 13 | 12 | 11 | 13 | 12 | 14 | 8 | 12 | 13 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SSW 8 | SW 7 | SW 7 | S 6 | SW 8 | SW 6 | NNW 4 | — | — | — | SW 9 | SW 9 | SW 9 | SW 7 | SW 7 | NW 4 | — | — | SW 7 | SW 7 |
| kJ | 6 | 6 | 2 | 2 | 1 | 9 | 106 | 4 | — | — | — | 446 | 162 | 61 | 34 | 56 | 3 | — | — | 104 | 42 |
Swell 2 Height (m) Direction Period (s) | W 13 | — | — | SW 12 | W 12 | — | — | — | — | — | — | — | NW 4 | NNW 4 | — | — | — | — | — | NW 4 | NNW 4 |
| kJ | 3 | — | — | 6 | 3 | — | — | — | — | — | — | — | 4 | 2 | — | — | — | — | — | 6 | 1 |
Swell 3 Height (m) Direction Period (s) | — | W 12 | — | — | S 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 5 | W 16 |
| kJ | — | 3 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 |
Wind waves Height (m) Direction Period (s) | ESE 3 | — | — | E 3 | — | SSW 4 | NW 4 | SW 7 | SW 5 | SW 6 | SW 7 | NW 3 | — | — | NNW 3 | NW 5 | SW 5 | SW 6 | WSW 7 | — | — |
| kJ | 4 | — | — | 1 | — | 21 | 4 | 73 | 92 | 138 | 347 | 6 | — | — | 4 | 29 | 65 | 247 | 229 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 202 | 336 | 305 | 297 | 297 | 68 | 186 | 7 | 319 | 319 | 96 | 96 | 33 | 257 | 129 | 436 | 306 | 7 | 240 | 255 | 317 |
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.
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