Surf Forecasts:
Fishermans (Rhiw) surf forecast from 10 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 4PM (local time) - 6.5ft (2.0m), 7s period, SW swell with 347 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 2.0m 7s and forecast to arrive on Saturday (Sep 12) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Wednesday (Sep 16) at 4AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Sat 12th Sep) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Right, folks, Rusty here. Let me tell you, the next couple of weeks are looking pretty grim for a paddle. We’ve got a massive 11-day gap with no surf worth mentioning, so don't even bother waxing the board until the very end of the outlook.
The water temperature is sitting at 63°F, which is a touch warmer than normal for this time of year, but that's about the only thing that's been kind to us.
The first real glimmer of hope doesn't come until Monday, the 21st of September. Real early, we get a bit of a reprieve at Fishermans (Rhiw). The swell is a modest 5ft from the WSW, but the wind is dead calm, glassy. It's a reef break, so it'll handle the small swell okay, but the energy is weak (106). It’s surfable, but just barely. It's a beginner spot, and with the glassy conditions, it’s the only time in the whole window that looks even remotely user-friendly. The best part of that day is the morning; by the afternoon, the wind swings onshore and it’s junk again.
The rest of the run is a write-off. We've got a few moments where the swell tries to pump, like the 10th and 18th, but the wind is either howling onshore or cross-onshore, making it a total mess. That 7ft of swell on the afternoon of the 10th is nothing but a washing machine. Also, on the 24th of September, we see a 7ft swell from the WSW with good energy (415), but it’s hammered by a moderate cross-onshore wind, so it’s a choppy, lumpy mess. That setup looks more interesting for the kite surfers than for anyone with a paddle.
So, if you're desperate, you've got a tiny window on the morning of the 21st for a clean, small wave. Otherwise, the forecast is a long, barren stretch of wind and frustration. Forecasts can change, but right now, it’s a tough go.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Thu afternoon. Very mild (max 18°C on Thu night, min 13°C on Fri morning). Winds decreasing (strong winds from the SSW on Thu morning, light winds from the WNW by Fri afternoon). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Mon morning. Very mild (max 18°C on Mon morning, min 14°C on Tue night). Winds increasing (light winds from the SW on Sun afternoon, strong winds from the NNW by Tue night). | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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 5 | SW 7 | WSW 7 | SW 7 | SW 8 | SW 3 | SW 6 | SW 7 | SW 7 | SW 6 | WSW 6 | SW 6 | SW 5 | SW 5 | SW 6 | WSW 6 | WSW 6 | SW 6 | WSW 7 | WSW 6 | WSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 88 | 371 | 127 | 47 | 33 | 11 | 193 | 347 | 158 | 51 | 26 | 29 | 58 | 93 | 101 | 68 | 39 | 19 | 18 | 4 | 4 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross | cross-off | cross | on | on | cross-on | cross-on | cross-off | cross-on | on | on | on | on | cross | cross | cross-off | cross-off | cross-off | cross-off |
High Tide | 8:36PM4.30m | 9:01AM3.98m | 9:16PM4.46m | 9:39AM4.09m | 9:55PM4.48m | 10:15AM4.11m | 10:32PM4.37m | 10:51AM4.02m | 11:09PM4.13m | 11:26AM3.85m | 11:45PM3.81m | 12:01PM3.59m | 00:22AM3.44m | ||||||||
Low Tide | 3:14PM0.23m | 3:43AM-0.12m | 3:53PM0.09m | 4:21AM-0.15m | 4:29PM0.06m | 4:55AM-0.05m | 5:03PM0.13m | 5:27AM0.15m | 5:36PM0.29m | 5:57AM0.42m | 6:07PM0.51m | 6:26AM0.72m | 6:39PM0.77m | ||||||||
 | |  |  |  | | |  |  | | | | | | | | | | | |  | |
 | 6:41 | — | — | 6:43 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — | 6:50 | — | — | 6:52 | — | — |
 | — | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — | — | 7:35 | — | — | 7:31 | — |
mm | 1 | 2 | 1 | — | — | 1 | 4 | — | — | — | — | — | 1 | — | 2 | — | — | 1 | — | — | — |
Temp °C | 16 | 17 | 18 | 14 | 14 | 16 | 16 | 17 | 18 | 15 | 15 | 17 | 18 | 18 | 18 | 15 | 16 | 16 | 14 | 15 | 15 |
Feels °C | 9 | 11 | 15 | 9 | 13 | 9 | 10 | 12 | 15 | 13 | 15 | 15 | 15 | 14 | 15 | 12 | 13 | 10 | 7 | 11 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 8 | — | — | SW 7 | SW 8 | — | — | — | — | SW 6 | WSW 6 | SW 8 | W 9 | W 9 | W 12 | WSW 6 | WSW 6 | SW 6 | WSW 7 | WSW 6 | WSW 6 |
| kJ | 2 | — | — | 47 | 33 | — | — | — | — | 51 | 26 | 3 | 1 | 1 | 3 | 68 | 39 | 19 | 18 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | NW 4 | — | — | — | — | NW 4 | NW 4 | — | W 12 | W 12 | — | — | W 11 | — | — | SW 9 | — |
| kJ | — | — | — | — | 8 | — | — | — | — | 4 | 4 | — | 3 | 3 | — | — | 2 | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | SW 7 | WSW 7 | NW 4 | — | SW 3 | SW 6 | SW 7 | SW 7 | NW 4 | — | SW 6 | SW 5 | SW 5 | SW 6 | NW 4 | NW 4 | NW 5 | NW 6 | NW 5 | NW 4 |
| kJ | 88 | 371 | 127 | 16 | — | 11 | 193 | 347 | 158 | 11 | — | 29 | 58 | 93 | 101 | 10 | 20 | 94 | 176 | 74 | 24 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 317 | 96 | 7 | 129 | 7 | 249 | 255 | 317 | 7 | 195 | 255 | 136 | 255 | 255 | 157 | 330 | 575 | 129 | 146 | 129 | 144 |
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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