Surf Forecasts:
Fishermans (Rhiw) surf forecast from 29 Aug 2026:
- Most powerful swell: Wednesday 2 Sep, 7PM (local time) - 8ft (2.4m), 7s period, SW swell with 629 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 2.4m 7s and forecast to arrive on Wednesday (Sep 02) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s 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 | 7PM (Wed 2nd Sep) | 8ft (2.4m) 7s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's coming our way for Fishermans (Rhiw). I've been staring at the charts, and I gotta be straight with you – this is shaping up to be a tough stretch. The whole sixteen-day window is a real mixed bag, mostly a lot of noise and not much to get excited about. The water is 65°, which is 4° warmer than what we'd normally see this time of year, so that's a little weird, but there it is.
To start, the first few days are a write-off. From Saturday the 29th right through to Sunday the 6th of September, it's just one poor report after another. We've got onshore winds, cross-shore chop, and small, weak, short-period swell. Not worth paddling out for.
Now, there is one tiny glimmer in this otherwise bleak outlook. On Monday the 7th of September, the morning offers a bit of hope. The wind goes glassy, with a light breeze from the NNW and that's a huge positive. The swell is a modest 4 ft coming from the west, with a weak period of just 5 seconds. The combined energy is low at 94, so it's not going to be powerful, but with those clean, glassy conditions, you might just get a few ordinary but rideable waves. Honestly, the afternoon isn't bad either, with clean conditions and a cross-offshore breeze, but the swell drops to 4 ft. It's not a standout, but it's the only game in town. If you're desperate, that Monday morning session is your best bet.
After that, it pretty much goes back to the doldrums. Tuesday the 8th sees the swell drop away completely into tiny, weak waves. From Wednesday the 9th and right through to the end of the forecast period on the 13th, it's either flat or blown out with strong onshore winds. A few days there, particularly the 10th and 11th, see near gale-force winds and less than 0.3 ft of swell. Not even worth looking at.
So, to wrap it up: the only real session to even think about is Monday morning, the 7th of September, at Fishermans. It'll be small and weak, but clean because of that glassy wind. Don't bank on anything else. This is a long, lean period for Rhiw.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Sat morning. Very mild (max 17°C on Sun morning, min 14°C on Sun night). Winds increasing (light winds from the WSW on Sat night, strong winds from the WNW by Sun night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Tue night. Very mild (max 18°C on Wed morning, min 14°C on Thu night). Winds increasing (moderate winds from the SW on Tue night, strong winds from the WSW by Thu night). | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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 | SW 9 | SW 8 | SW 5 | WSW 8 | WSW 9 | WSW 8 | SW 5 | SW 5 | SW 5 | SW 5 | SW 7 | SW 7 | WSW 7 | WSW 6 | SW 6 | W 5 | WSW 6 | WSW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 30 | 18 | 141 | 72 | 73 | 166 | 135 | 92 | 43 | 64 | 74 | 80 | 396 | 574 | 362 | 188 | 159 | 117 | 148 | 178 | 56 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-on | cross-on | on | cross | cross-off | cross-on | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off |
High Tide | 10:01PM4.26m | 10:18AM3.93m | 10:34PM4.30m | 10:52AM3.97m | 11:09PM4.25m | 11:28AM3.91m | 11:47PM4.09m | 12:08PM3.76m | 00:30AM3.83m | 12:53PM3.53m | 1:20AM3.49m | 1:48PM3.26m | 2:25AM3.15m | ||||||||
Low Tide | 4:32PM0.27m | 4:59AM0.12m | 5:04PM0.26m | 5:32AM0.17m | 5:38PM0.34m | 6:05AM0.31m | 6:13PM0.48m | 6:41AM0.53m | 6:51PM0.67m | 7:22AM0.79m | 7:39PM0.91m | 8:16AM1.08m | 8:50PM1.14m | ||||||||
 |  |  |  | | |  | |  | |  |  | | | |  | | | | | | |
 | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:31 | — | — | 6:31 | — | — |
 | — | 8:15 | — | — | 8:12 | — | — | 8:09 | — | — | 8:07 | — | — | 8:05 | — | — | 8:02 | — | — | 8:00 | — |
mm | 7 | 1 | 1 | 3 | 2 | 1 | — | — | — | 1 | — | 5 | — | — | — | — | — | 1 | — | — | — |
Temp °C | 16 | 16 | 16 | 17 | 17 | 16 | 15 | 17 | 17 | 16 | 17 | 17 | 18 | 17 | 17 | 16 | 18 | 16 | 16 | 17 | 16 |
Feels °C | 14 | 14 | 15 | 13 | 11 | 13 | 9 | 13 | 13 | 12 | 12 | 13 | 14 | 12 | 12 | 11 | 11 | 8 | 9 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 6 | SW 6 | SW 9 | SW 8 | SW 8 | — | WSW 9 | NW 5 | WSW 8 | — | — | W 16 | — | — | — | — | — | — | — | — | SW 6 |
| kJ | 30 | 18 | 141 | 72 | 17 | — | 135 | 32 | 6 | — | — | 5 | — | — | — | — | — | — | — | — | 56 |
Swell 2 Height (m) Direction Period (s) | — | ESE 3 | NW 4 | — | — | — | — | — | NNW 5 | — | — | — | — | — | — | — | — | — | — | — | SW 14 |
| kJ | — | 1 | 7 | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | N 2 | WNW 4 | SW 3 | SW 5 | WSW 8 | NW 6 | WSW 8 | SW 5 | SW 5 | SW 5 | SW 5 | SW 7 | SW 7 | WSW 7 | WSW 6 | SW 6 | W 5 | WSW 6 | WSW 6 | NW 4 |
| kJ | 2 | 1 | 6 | 5 | 73 | 166 | 156 | 92 | 43 | 64 | 74 | 80 | 396 | 574 | 362 | 188 | 159 | 117 | 148 | 178 | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 305 | 186 | 7 | 185 | 329 | 436 | 366 | 7 | 129 | 255 | 255 | 285 | 292 | 295 | 257 | 464 | 1033 | 525 | 524 | 498 | 129 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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