
Surf Forecasts:
Fishermans (Rhiw) surf forecast from 14 Sep 2026:
- Most powerful swell: Saturday 19 Sep, 4PM (local time) - 7ft (2.2m), 7s period, SW swell with 501 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 2.2m 7s and forecast to arrive on Saturday (Sep 19) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Wednesday (Sep 16) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sat 19th Sep) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer for Fishermans (Rhiw). It’s a reef setup, fairly exposed to the swell, and it’s a beginner-friendly wave. Water temp is sitting at 63°, which is a touch warmer than normal for this time of year – you’ll be fine in a spring suit.
Straight up, I gotta be honest with you – the next couple of weeks are looking pretty grim. There’s a long, dry spell here. From now, Sunday the 13th, right through until Tuesday the 22nd of September, there’s basically nothing worth paddling out for. The energy is weak, the wind is messy, and every session is marked as poor surf conditions. It’s a real bummer. We’re looking at a gap of about nine days with no recommendations at all.
There is a small glimmer late on Tuesday the 22nd. The morning shows a clean 4ft swell from the WSW with a light to moderate cross-offshore breeze from the north. The combined energy is still only moderate (115), but it’s clean. The period is a short 6 seconds, so it’ll be a bit weak and crumbly, but it’s the best we’ve seen in over a week.
Wednesday the 23rd morning looks similar – clean, 4ft from the SW, cross-offshore north wind, energy at 112. Still short period. But the afternoon on the 23rd is the only real standout in the whole forecast. Swell jumps to 6ft from the NW, period still 6 seconds, but the energy is moderate to strong at 277. The wind stays fresh and cross-offshore from the north, so the waves should be clean and have a bit more push. It’s a NW direction, which is not the optimum SW for this spot, so it might be a little raw, but for Fishermans, this is the best on offer. It’s still a short-period swell, so expect it to be a bit lumpy and less organised than a proper groundswell.
After that, it all fizzles out again into tiny, clean but powerless waves through to the end of the month. Thursday the 24th and Friday the 25th are ankle-biters at 0.3ft to 0.7ft. The weekend of the 26th and 27th has a weird 14-second period on a tiny 0.3ft swell – that’s a very long period for no height, so it’s not doing anything. Monday the 28th shows zero swell.
So, to sum it up: there’s one window that’s worth looking at – Wednesday the 23rd of September, especially the afternoon. It’s not perfect, but it’s the only time you’ll get a clean wave with some size. The rest of the period is a write-off.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Very mild (max 17°C on Sun afternoon, min 13°C on Tue night). Winds decreasing (strong winds from the SSW on Mon night, light winds from the W by Tue afternoon). | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Fri night. Very mild (max 16°C on Thu afternoon, min 14°C on Wed afternoon). Mainly strong winds. | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 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) | SW 6 | SW 4 | SW 5 | SW 5 | SW 6 | WSW 5 | W 5 | SW 6 | WSW 6 | WSW 7 | SW 5 | W 6 | W 5 | W 6 | W 6 | SW 5 | SW 6 | SW 7 | SW 7 | SW 7 |
Wave Graph | ||||||||||||||||||||
25 | 16 | 28 | 77 | 219 | 117 | 77 | 27 | 15 | 10 | 59 | 182 | 110 | 190 | 166 | 57 | 111 | 393 | 501 | 114 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | cross | cross | cross-off | cross-off | cross-on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross | cross-off |
High Tide | 10:32PM4.37m | 10:51AM4.02m | 11:09PM4.13m | 11:26AM3.85m | 11:45PM3.81m | 12:01PM3.59m | 00:22AM3.44m | 12:37PM3.29m | 1:02AM3.07m | 1:20PM2.97m | 1:52AM2.71m | 2:21PM2.69m | 3:20AM2.46m | |||||||
Low Tide | 5:03PM0.13m | 5:27AM0.15m | 5:36PM0.29m | 5:57AM0.42m | 6:07PM0.51m | 6:26AM0.72m | 6:39PM0.77m | 6:56AM1.02m | 7:16PM1.06m | 7:33AM1.31m | 8:07PM1.34m | 8:31AM1.56m | 9:31PM1.55m | |||||||
— | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | |
7:39 | — | — | 7:37 | — | — | 7:35 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | — | 7:24 | — | |
mm | — | — | — | — | 2 | — | — | — | — | — | 2 | — | — | — | — | — | 5 | 2 | 2 | — |
Temp °C | 17 | 17 | 17 | 17 | 17 | 15 | 17 | 16 | 14 | 15 | 15 | 14 | 16 | 14 | 14 | 15 | 16 | 16 | 16 | 16 |
Feels °C | 17 | 16 | 16 | 12 | 11 | 8 | 15 | 11 | 9 | 8 | 9 | 8 | 10 | 6 | 9 | 9 | 12 | 13 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 6 | — | W 12 | W 12 | — | — | NW 5 | SW 6 | WSW 6 | NNW 6 | NNW 5 | — | — | — | — | NW 5 | N 5 | — | — | SW 7 |
25 | — | 3 | 3 | — | — | 25 | 27 | 15 | 39 | 2 | — | — | — | — | 21 | 1 | — | — | 114 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | WSW 7 | WSW 8 | WSW 7 | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | 19 | 6 | 10 | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | W 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 4 | SW 5 | SW 5 | SW 6 | WSW 5 | W 5 | NW 5 | NW 6 | WNW 5 | SW 5 | W 6 | W 5 | W 6 | W 6 | SW 5 | SW 6 | SW 7 | SW 7 | NW 4 |
— | 16 | 28 | 77 | 219 | 117 | 77 | 66 | 107 | 42 | 59 | 182 | 110 | 190 | 166 | 57 | 111 | 393 | 501 | 18 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 255 | 249 | 255 | 255 | 255 | 498 | 464 | 146 | 129 | 305 | 309 | 319 | 322 | 498 | 366 | 297 | 297 | 325 | 7 | 7 |
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.











