Surf Forecasts:
Fishermans (Rhiw) surf forecast from 5 Sep 2026:
- Most powerful swell: Monday 7 Sep, 1PM (local time) - 3ft (0.9m), 13s period, SW swell with 257 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 13s and forecast to arrive on Monday (Sep 07) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Sep 09) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Mon 7th Sep) | 3ft (0.9m) 13s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what we’ve got coming up.
To be straight with you, it’s looking like a tough stretch. We’re going to have a long, quiet period with hardly a wave worth paddling for. The first real sign of any swell that’s even worth looking at doesn’t show up until Thursday, September 17th. That’s a solid 12-day gap with no proper surf.
The only real chance to get wet comes on Thursday the 17th at Fishermans (Rhiw). The morning shows a 1.4m swell from the W, with a short period of 6 seconds. The wind will be light offshore from the NE, so the surface will be clean. The combined energy will be moderate (116). By the afternoon, the wind goes glassy, and the swell drops to 1.2m from the W, but the period is still short at 5 seconds, and the energy drops to 77. The water is a touch warmer than normal for this time of year, at 63°.
This is a beginner-friendly reef, and the conditions are clean, but the waves are tiny and weak. It’s surfable, but very ordinary. Thursday the 17th is the only standout, and that’s only because everything else is a complete write-off.
After that, the swell disappears again. Friday the 18th and Saturday the 19th are both onshore and messy. The rest of the window into the 20th is flat and clean, but with waves under 2 feet, you’re better off swimming.
So, if you’re a kite surfer, the wind might give you something. For the rest of us, this is a quiet period. The only day to even consider is Thursday the 17th. Keep an eye on the forecasts, because it can’t stay this poor for long.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sat night. Very mild (max 19°C on Sun afternoon, min 13°C on Mon night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Thu night. Very mild (max 17°C on Thu night, min 13°C on Tue night). Winds decreasing (fresh winds from the WNW on Tue night, light winds from the W by Wed night). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 6 | SW 6 | SW 5 | SW 6 | SW 6 | SW 14 | SW 5 | WSW 6 | WSW 5 | WSW 5 | SW 10 | WSW 6 | WSW 5 | WSW 4 | SW 3 | SW 6 | SW 6 | WSW 4 | W 5 | SW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 23 | 7 | 28 | 75 | 96 | 52 | 87 | 123 | 112 | 117 | 4 | 28 | 17 | 12 | 7 | 107 | 147 | 29 | 43 | 43 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross | on | on | on | cross | cross | cross-off |
High Tide | 3:52AM2.93m | 4:36PM3.02m | 5:28AM2.98m | 6:01PM3.28m | 6:41AM3.22m | 7:03PM3.65m | 7:36AM3.52m | 7:53PM4.02m | 8:20AM3.78m | 8:36PM4.30m | 9:01AM3.98m | 9:16PM4.46m | ||||||||
Low Tide | 10:31PM1.24m | 11:19AM1.31m | 00:09AM1.06m | 12:42PM1.09m | 1:21AM0.71m | 1:43PM0.77m | 2:16AM0.35m | 2:31PM0.47m | 3:02AM0.05m | 3:14PM0.23m | 3:43AM-0.12m | 3:53PM0.09m | ||||||||
 |  |  | |  | |  |  | | | | | | | | | | | | | |
 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — |
 | 7:59 | — | — | 7:55 | — | — | 7:53 | — | — | 7:51 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — |
mm | — | 2 | — | — | — | — | — | 7 | — | — | — | — | — | — | — | — | 3 | — | — | — |
Temp °C | 14 | 15 | 18 | 19 | 17 | 15 | 16 | 16 | 15 | 16 | 14 | 14 | 16 | 16 | 16 | 16 | 17 | 15 | 17 | 15 |
Feels °C | 11 | 11 | 13 | 13 | 14 | 12 | 10 | 11 | 7 | 9 | 6 | 8 | 13 | 12 | 12 | 11 | 12 | 8 | 12 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | SW 6 | SW 5 | SW 13 | W 17 | SW 14 | — | WSW 12 | — | — | SW 10 | WSW 6 | NW 5 | NNW 4 | WSW 7 | — | — | SW 7 | SW 8 | SW 7 |
| kJ | 23 | 6 | 28 | 6 | 6 | 52 | — | 79 | — | — | 4 | 28 | 28 | 2 | 5 | — | — | 23 | 16 | 43 |
Swell 2 Height (m) Direction Period (s) | NW 4 | SW 13 | SW 13 | — | W 12 | WSW 10 | — | — | — | — | — | — | W 8 | WSW 7 | NW 4 | — | — | — | — | — |
| kJ | 7 | 7 | 7 | — | 3 | 9 | — | — | — | — | — | — | 1 | 5 | 1 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 13 | NW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 7 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | S 3 | SW 6 | SW 6 | WSW 6 | SW 5 | WSW 6 | WSW 5 | WSW 5 | WNW 6 | NW 6 | WSW 5 | WSW 4 | SW 3 | SW 6 | SW 6 | WSW 4 | W 5 | NW 4 |
| kJ | — | 5 | 5 | 75 | 96 | 41 | 87 | 123 | 112 | 117 | 168 | 96 | 17 | 12 | 7 | 107 | 147 | 29 | 43 | 26 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 255 | 136 | 188 | 398 | 186 | 7 | 461 | 257 | 498 | 498 | 296 | 296 | 301 | 129 | 188 | 305 | 346 | 498 | 497 | 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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