Surf Forecasts:
Fishermans (Rhiw) surf forecast from 24 Aug 2026:
- Most powerful swell: Monday 31 Aug, 10AM (local time) - 4ft (1.2m), 11s period, SW swell with 328 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 1.2m 11s and forecast to arrive on Monday (Aug 31) at 10AM. Winds are predicted to be cross-shore 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 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Mon 31st Aug) | 4ft (1.2m) 11s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright, grab a coffee, this is a tough one. Fishermans (Rhiw) is sitting there, but the whole 16-day window is a tale of frustration. This reef break is usually "fairly consistent," but for this stretch, the swell is just not cooperating. The water's running a touch warmer than normal for this time of year at 63°F, which is nice for the swim, not so much for the surf.
We start off right now with a pretty dire run. From Monday the 24th right through to Friday the 28th of August, it's tiny. We're talking ankle-snappers at 0.6ft or even 0.3ft. The wind is all over the shop – cross-shore, offshore – but there’s just no energy in the water to work with. The combined swell energy is barely registering, like 10 to 19 (weak). You’d be floating around for nothing.
Saturday the 29th and Sunday the 30th see a slight lift, but it’s onshore wind messing it up. Sunday afternoon looks like it could push 5ft, but that's coming with a fresh 22 mph onshore wind, making it lumpy, and a short 6-second period. The energy is still pitifully low, only hitting 164 (moderate) but the conditions are poor. Not worth a paddle.
Now, there’s a bit of a tease at the very end of the run. Around the 6th of September, the swell really starts to kick. By Sunday the 6th, we’re looking at 12ft of swell, but the period is only 9 seconds and the wind is cross-onshore at 12 mph. Then on Monday the 7th, the swell drops to 8ft but the period jumps to 17 seconds – that's a proper groundswell. The combined energy is off the charts at 1440 (strong) on the Monday afternoon. But the wind is howling onshore at 19 mph from the WSW. That long period (over 15 seconds) and onshore wind at a beach-and-reef setup like this is going to be a mess. It’ll be big, closed out, and just about impossible to paddle out. This is the kind of setup that’s more for kite surfing than paddle surfing right now. At 6ft and bigger on Sunday the 6th, that's getting too big for beginners.
Honestly, there isn’t a standout in this entire outlook. The best shot might be the early morning of the 8th of September, when the wind is cross-shore and the swell is a more manageable 3ft, but by then the energy is fading again (180, moderate). For now, put the board away and watch from the cliff. It's a long, blank run.
Rusty
Short Range ForecastMostly dry. Warm (max 21°C on Mon afternoon, min 15°C on Mon morning). Winds decreasing (fresh winds from the E on Tue night, calm by Wed afternoon). | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Sat afternoon. Very mild (max 17°C on Thu morning, min 15°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 10 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 8 | SSW 8 | W 12 | SW 12 | SW 12 | SW 8 | SW 8 | SW 7 | SW 7 | SW 5 | SW 6 | SW 5 | SW 6 | SW 6 | SW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 9 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 3 | 6 | 6 | 57 | 86 | 27 | 11 | 23 | 11 | 28 | 36 | 164 | 134 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | cross-off | cross-off | off | cross-off | cross | glassy | off | cross-on | cross-on | on | cross-on | cross-on | cross-off | on | cross-on | cross-off | on | cross-on | on |
High Tide | 7:16PM3.08m | 7:39AM3.02m | 7:55PM3.37m | 8:14AM3.26m | 8:28PM3.66m | 8:46AM3.48m | 8:59PM3.92m | 9:16AM3.67m | 9:29PM4.12m | 9:47AM3.83m | 10:01PM4.26m | 10:18AM3.93m | 10:34PM4.30m | ||||||||
Low Tide | 1:36PM1.24m | 2:08AM1.03m | 2:17PM0.97m | 2:46AM0.75m | 2:53PM0.72m | 3:20AM0.50m | 3:26PM0.50m | 3:53AM0.30m | 3:59PM0.35m | 4:26AM0.17m | 4:32PM0.27m | 4:59AM0.12m | 5:04PM0.26m | ||||||||
 | |  |  | | | | | |  |  |  | | |  | |  |  | |  |  | |
 | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — |
 | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:19 | — | — | 8:16 | — | — | 8:15 | — | — | 8:12 | — |
mm | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | 8 | 1 | 1 | 6 | 3 |
Temp °C | 18 | 21 | 19 | 17 | 19 | 21 | 19 | 20 | 20 | 17 | 17 | 17 | 16 | 17 | 17 | 16 | 16 | 16 | 17 | 18 | 17 |
Feels °C | 16 | 17 | 13 | 13 | 16 | 16 | 19 | 20 | 20 | 16 | 16 | 16 | 15 | 15 | 16 | 13 | 14 | 14 | 13 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 10 | — | SW 13 | SW 13 | SW 8 | SW 8 | SSW 8 | SSW 8 | SW 7 | S 3 | S 7 | WSW 8 | — | SW 7 | SW 7 | NW 5 | SW 6 | SW 5 | SW 6 | — | SW 7 |
| kJ | 9 | — | 7 | 7 | 3 | 3 | 6 | 6 | 2 | 1 | 1 | 6 | — | 27 | 11 | 20 | 11 | 28 | 36 | — | 118 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 9 | SW 9 | SW 8 | SW 13 | SW 13 | W 13 | — | — | SW 7 | SW 12 | — | — | SW 5 | — | W 8 | NW 5 | NW 4 | — | — | — |
| kJ | 8 | 3 | 3 | 3 | 7 | 7 | 3 | — | — | 2 | 6 | — | — | 11 | — | 1 | 5 | 1 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | SW 13 | — | — | — | — | — | W 12 | W 12 | SW 12 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | — | — | — | — | — | 3 | 3 | 6 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | — | ESE 4 | E 3 | E 3 | E 3 | ESE 3 | — | — | — | — | SW 8 | SW 8 | WNW 4 | NW 5 | SW 5 | — | — | SSE 3 | SW 6 | WSW 7 |
| kJ | 2 | — | 10 | 3 | 1 | 7 | 2 | — | — | — | — | 57 | 86 | 21 | 51 | 23 | — | — | 3 | 164 | 134 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 292 | 295 | 268 | 256 | 216 | 139 | 265 | 216 | 305 | 256 | 129 | 7 | 7 | 195 | 143 | 136 | 298 | 319 | 296 | 305 | 292 |
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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