Surf Forecasts:
Fishermans (Rhiw) surf forecast from 15 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 4AM (local time) - 6.5ft (2.0m), 7s period, WSW swell with 332 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 Thursday (Sep 17) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s 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 | 4AM (Thu 17th Sep) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming down the line over the next couple of weeks.
To be straight with you, this is a tough stretch for Fishermans (Rhiw). The first proper surf on offer doesn’t kick in until the 28th of September, which is a full ten days away. We’ve got a long stretch of slim to none before that, with only minor, messy, or flat days in between. If you’re desperate for a paddle, you’ll be waiting a while.
The best of the whole run looks like it’ll be Monday the 28th of September. That morning, we’ve got a pulse of swell pushing in around 10ft from the WSW, with a combined energy reading of 1093 – that’s some serious power. It’s a touch cross and a bit messy that morning, though. But by the afternoon, the wind swings NE, turning offshore, and the swell drops back a bit to 8ft, still from the WSW and with energy down slightly to 1037. That afternoon window is your standout: clean conditions, solid but not stupid-big size. That’s big enough to be expert territory at over 8ft, so know your limits. The water temp is sitting at 63°F with a positive anomaly of 3°F, so noticeably warmer than average for this time of year – a nice bonus.
The following morning, Tuesday the 29th, still has some decent leftovers around 6ft from the W, but the wind is more cross-off and the energy has dropped a lot, down to 238. It’s surfable, but not a patch on the day before. Afternoon holds another glassy 6ft spell, but again the punch is gone. After that, it fades right back into small, onshore mush.
Crowds at Fishermans (Rhiw) can show up sometimes, so on that standout Monday afternoon, you might have company. But with good surf so scarce, it’ll be worth the squeeze.
Alright, that’s the tale for this stretch. Better luck next time, maybe.
Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Very mild (max 16°C on Tue afternoon, min 13°C on Tue night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri afternoon. Very mild (max 17°C on Fri night, min 13°C on Sun morning). Winds decreasing (strong winds from the SW on Fri afternoon, light winds from the S by Sun night). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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) | WSW 6 | W 5 | WSW 6 | SW 6 | WNW 5 | SW 6 | W 7 | W 6 | W 6 | WSW 5 | SW 6 | SW 7 | WSW 7 | SW 7 | SW 6 | SW 7 | SW 6 | SW 5 | SW 5 | SW 5 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 126 | 78 | 25 | 15 | 36 | 160 | 226 | 154 | 158 | 91 | 169 | 183 | 211 | 91 | 68 | 35 | 36 | 29 | 11 | 3 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-on | cross-on | cross | cross-on | cross | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross-on | on | cross-on | glassy | glassy |
High Tide | 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 | 4:17PM2.58m | 5:27AM2.49m | 5:57PM2.77m | ||||||||
Low Tide | 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 | 10:10AM1.67m | 11:23PM1.54m | 11:53AM1.55m | 00:44AM1.32m | ||||||||
 |  |  |  | | | | |  | |  |  | | | | | | | | |  | |
 | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:01 | — | — |
 | — | 7:35 | — | — | 7:31 | — | — | 7:30 | — | — | 7:27 | — | — | 7:24 | — | — | 7:22 | — | — | 7:20 | — |
mm | — | 1 | 1 | — | — | 3 | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 15 | 14 | 15 | 16 | 14 | 15 | 14 | 15 | 16 | 17 | 16 | 17 | 17 | 13 | 15 | 17 | 17 | 18 | 18 |
Feels °C | 9 | 11 | 10 | 9 | 9 | 10 | 7 | 8 | 6 | 8 | 12 | 11 | 12 | 13 | 13 | 12 | 13 | 18 | 17 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | — | — | WSW 6 | SW 6 | WSW 7 | — | — | — | — | NNW 5 | NNW 5 | — | W 16 | SW 7 | SW 6 | SW 7 | NW 4 | W 14 | SW 5 | SW 5 | SW 6 |
| kJ | — | — | 25 | 15 | 5 | — | — | — | — | 17 | 2 | — | 5 | 91 | 68 | 35 | 1 | 4 | 11 | 3 | 5 |
Swell 2 Height (m) Direction Period (s) | — | — | — | WSW 10 | WSW 7 | — | — | — | — | — | — | — | — | NW 4 | W 14 | NW 4 | W 14 | — | W 13 | WSW 6 | — |
| kJ | — | — | — | 9 | 5 | — | — | — | — | — | — | — | — | 2 | 4 | 3 | 4 | — | 3 | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 10 | — | — | — | — | — | — | — | — | W 16 | — | W 14 | — | — | — | — | — |
| kJ | — | — | — | — | 8 | — | — | — | — | — | — | — | — | 5 | — | 4 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | W 5 | NW 5 | NW 5 | WNW 5 | SW 6 | W 7 | W 6 | W 6 | WSW 5 | SW 6 | SW 7 | WSW 7 | — | NW 4 | — | SW 6 | SW 5 | — | — | — |
| kJ | 126 | 78 | 64 | 48 | 36 | 160 | 226 | 154 | 158 | 91 | 169 | 183 | 211 | — | 1 | — | 36 | 29 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 498 | 560 | 129 | 129 | 297 | 320 | 320 | 498 | 129 | 297 | 297 | 297 | 7 | 257 | 129 | 7 | 7 | 129 | 114 | 285 | 132 |
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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