Surf Forecasts:
Fishermans (Rhiw) surf forecast from 14 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 10AM (local time) - 5ft (1.5m), 6s period, W swell with 139 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 1.5m 6s and forecast to arrive on Wednesday (Aug 19) at 10AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 15) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Wed 19th Aug) | 5ft (1.5m) 6s |
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 the table for Fishermans (Rhiw). I’ll be straight with you – it’s a tough stretch ahead. The next two weeks are looking pretty bleak for any proper surfing. The water temp is sitting about average for the time of year, so at least you won’t freeze while you’re waiting.
We’ve got a long gap right from the start. There’s nothing worth paddling out for over the first week and a half. From Friday the 14th all the way through to Tuesday the 25th, the swell is tiny, mostly under 2 ft, and the energy is weak as weak can be (single-digit energy readings). The only real highlight in that period is Tuesday the 18th morning, when it goes glassy and the swell bumps up to 3 ft, but even then the conditions are labelled poor and the energy is only 48 – not enough to get excited about. You’d be better off staying on the beach.
Now, after that long dry spell, things start to look a little more promising around Wednesday the 26th. The morning is clean with offshore wind, and we get a 3 ft swell from the SW with a period of 5 seconds – short period, so it’ll be a bit choppy and won’t have much push. The energy is moderate at 41. Not a standout, but at least it’s rideable.
The real standout of the whole 16-day window lands on Wednesday the 26th afternoon. We’ve got 5 ft of SW swell with a 5-second period, and the energy climbs to 114 – moderate wave energy. The wind is cross-off from the NNW, so the wave faces should be clean. For a reef break that’s fairly consistent, this is the one to aim for. It’s not huge, but it’s the best we’ve got.
After that, the surf drops off again. Thursday the 27th and Friday the 28th are back to small, weak, and messy with onshore winds and choppy conditions.
So, to sum it up: don’t bother for the first 11 days. Mark your calendar for Wednesday the 26th afternoon. That’s your only real shot at a decent session.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Fri morning, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon night. Very mild (max 18°C on Mon night, min 13°C on Wed night). Winds increasing (calm on Mon morning, fresh winds from the W by Tue night). | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 5 | SW 5 | WSW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | W 7 | WSW 3 | SW 4 | SW 5 | SW 6 | WSW 6 | SW 6 | W 4 | W 6 | W 5 | SW 6 | SW 15 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 10 | 5 | 5 | 5 | 5 | 2 | 2 | 1 | 2 | 4 | 6 | 92 | 80 | 37 | 48 | 139 | 69 | 15 | 8 | 8 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross-off | cross-off | off | glassy | on | on | glassy | on | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross-off | off |
High Tide | 10:02AM4.03m | 10:19PM4.55m | 10:42AM4.01m | 11:00PM4.46m | 11:22AM3.91m | 11:40PM4.24m | 12:01PM3.72m | 00:20AM3.91m | 12:40PM3.48m | 1:01AM3.53m | 1:22PM3.21m | 1:46AM3.14m | 2:11PM2.93m | 2:45AM2.80m | |||||||
Low Tide | 4:54PM0.07m | 5:26AM-0.15m | 5:32PM0.14m | 6:03AM0.03m | 6:09PM0.29m | 6:39AM0.30m | 6:44PM0.52m | 7:13AM0.62m | 7:20PM0.79m | 7:48AM0.95m | 7:59PM1.07m | 8:27AM1.25m | 8:50PM1.34m | ||||||||
 |  |  |  | | | | |  | | |  | | | | | | | | | | |
 | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | 8:47 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 17 | 14 | 16 | 16 | 15 | 16 | 17 | 16 | 17 | 18 | 16 | 18 | 17 | 15 | 17 | 16 | 13 | 14 | 14 |
Feels °C | 19 | 14 | 14 | 10 | 13 | 13 | 13 | 14 | 17 | 17 | 15 | 16 | 13 | 16 | 12 | 9 | 14 | 13 | 10 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 5 | SW 5 | WSW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | SW 5 | W 7 | SW 4 | — | — | W 16 | NW 5 | — | W 16 | W 15 | SW 6 | WSW 5 | SW 5 | SW 14 |
| kJ | 10 | 5 | 5 | 5 | 5 | 2 | 2 | 1 | 1 | 4 | — | — | 5 | 14 | — | 5 | 5 | 15 | 3 | 1 | 8 |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 8 | — | W 10 | — | SW 7 | — | W 7 | — | W 7 | — | — | — | W 17 | — | — | W 16 | SW 16 | SW 15 | SW 14 | — |
| kJ | 2 | 2 | — | 2 | — | 2 | — | 1 | — | 1 | — | — | — | 5 | — | — | 5 | 10 | 8 | 8 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | W 7 | — | — | — | — | — | — | — | — | W 16 | — | W 8 | — |
| kJ | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 5 | — | 1 | — |
Wind waves Height (m) Direction Period (s) | — | NNW 2 | N 3 | NNW 4 | NNW 4 | NNW 3 | — | — | WSW 3 | — | SW 5 | SW 6 | WSW 6 | SW 6 | W 4 | W 6 | W 5 | NNW 4 | NNW 4 | NW 4 | NNW 4 |
| kJ | — | 1 | 3 | 10 | 22 | 1 | — | — | 2 | — | 6 | 92 | 80 | 37 | 48 | 139 | 69 | 7 | 24 | 18 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 142 | 142 | 114 | 308 | 346 | 515 | 158 | 292 | 295 | 303 | 302 | 310 | 296 | 2 | 292 | 297 | 281 | 464 | 438 | 631 | 464 |
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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