Surf Forecasts:
Fishermans (Rhiw) surf forecast from 21 Aug 2026:
- Most powerful swell: Friday 28 Aug, 7AM (local time) - 3.5ft (1.0m), 7s period, SW swell with 88 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 1.0m 7s and forecast to arrive on Friday (Aug 28) at 7AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 6s period and expected on Thursday (Aug 27) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7AM (Fri 28th Aug) | 3.5ft (1.0m) 7s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the table for the next 16 days. It's a pretty grim outlook, I gotta be honest. The whole stretch is a flat spell with no real surf to speak of. We're looking at a long gap of tiny, weak waves and poor conditions, so don't get your hopes up for any decent rides.
The only break on the radar is Fishermans (Rhiw), a reef setup. The water is running at 65°, which is 4° warmer than usual for this time of year – that's much warmer than normal, so at least a dip won't be a shock to the system.
We start off on Friday the 21st of August with a tiny 0.3ft swell from the SW. The combined energy is a weak 14, and we've got a moderate cross-off breeze. It's clean, but there's nothing to ride. This pattern repeats all through the weekend and into the start of the week – tiny, weak swells, barely any energy registering in the low teens or single digits. The wind flips around, but it doesn't matter because there's no wave height.
Midweek, from Wednesday the 26th, we see a bit of a pulse, but it's still pathetic. Swell bumps up to 1.0ft, then 2ft, and the energy climbs to 38, but the period is short (5–8 seconds) and the wind is cross-on or onshore, making it choppy and messy. Not worth paddling out. By the end of the week and into the next, we get a bit more energy – on Sunday the 30th of August, swell hits 4ft with an energy of 171, but it's still cross-on with a short period. The water is still warm, but the surf quality is poor.
The first few days of September are more of the same. On the 31st of August and into September, there's a bit of size, up to 5ft, but it's onshore and short-period, making it a messy, blown-out wash. Even the cleaner days with offshore winds have virtually no swell. The whole 16-day window is a dud.
Fishermans (Rhiw) is a fairly consistent reef, so this blank run is a bit of a bummer, but it happens. Forecasts can change, so keep an eye on it, but for now, there's nothing to get excited about.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Very mild (max 19°C on Mon morning, min 13°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 21°C on Mon afternoon, min 15°C on Mon night). Winds increasing (light winds from the ENE on Tue afternoon, near gales from the SSE by Wed night). | |||||||||||||||||||
Fri 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | ||||||||||||||
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) | W 16 | W 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | WSW 11 | WSW 10 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 8 | S 5 | SW 5 | SW 7 | SW 7 | SW 12 | WSW 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 7 | 7 | 9 | 9 | 8 | 8 | 7 | 11 | 9 | 7 | 7 | 7 | 7 | 7 | 20 | 31 | 43 | 7 | 6 | 53 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | off | cross-off | cross-off | cross | off | cross-off | cross-off | cross-on | cross | cross | cross-on | cross-on | on | cross-off | cross |
High Tide | 4:14AM2.59m | 5:01PM2.65m | 5:49AM2.62m | 6:22PM2.82m | 6:54AM2.80m | 7:16PM3.08m | 7:39AM3.02m | 7:55PM3.37m | 8:14AM3.26m | 8:28PM3.66m | 8:46AM3.48m | 8:59PM3.92m | ||||||||
Low Tide | 10:11PM1.52m | 10:58AM1.60m | 00:02AM1.51m | 12:37PM1.49m | 1:19AM1.30m | 1:36PM1.24m | 2:08AM1.03m | 2:17PM0.97m | 2:46AM0.75m | 2:53PM0.72m | 3:20AM0.50m | 3:26PM0.50m | 3:53AM0.30m | |||||||
 |  |  | |  | | | |  |  | | | | | | |  | | |  | |
 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — |
 | 8:32 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — | — | 8:22 | — | — | 8:19 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | 2 |
Temp °C | 17 | 15 | 13 | 14 | 14 | 15 | 17 | 16 | 19 | 21 | 19 | 19 | 20 | 20 | 19 | 20 | 17 | 16 | 16 | 16 |
Feels °C | 12 | 11 | 9 | 9 | 10 | 13 | 13 | 12 | 17 | 18 | 12 | 16 | 18 | 15 | 16 | 18 | 9 | 15 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 6 | SW 13 | SW 15 | SW 15 | SW 15 | NNW 5 | SW 14 | NNW 3 | WSW 10 | SW 9 | SW 13 | SW 8 | SW 8 | SSW 8 | SSW 8 | SW 8 | SW 7 | SW 7 | SW 7 | WSW 6 |
| kJ | 3 | 7 | 9 | 9 | 8 | 2 | 7 | 2 | 9 | 3 | 7 | 3 | 3 | 7 | 7 | 2 | 43 | 7 | 2 | 53 |
Swell 2 Height (m) Direction Period (s) | SW 13 | W 6 | W 6 | SW 12 | SW 12 | SW 14 | W 9 | WSW 11 | SW 14 | — | SW 9 | SW 13 | SW 13 | SW 13 | W 12 | W 12 | WSW 8 | SW 12 | SW 12 | NNW 5 |
| kJ | 7 | 1 | 1 | 6 | 6 | 8 | 2 | 11 | 8 | — | 3 | 7 | 7 | 7 | 3 | 3 | 6 | 6 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | W 16 | W 16 | W 6 | W 5 | W 12 | — | — | SW 14 | — | SW 13 | — | — | — | — | — | — | SW 12 | — | — | — |
| kJ | 5 | 5 | 1 | 1 | 3 | — | — | 8 | — | 7 | — | — | — | — | — | — | 6 | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 5 | NNW 4 | NNW 5 | NNW 3 | NNW 5 | — | NNW 2 | — | SE 3 | — | E 3 | E 3 | ESE 3 | ESE 3 | S 5 | SW 5 | — | WNW 6 | WNW 6 | — |
| kJ | 19 | 10 | 14 | 7 | 8 | — | 1 | — | 2 | — | 8 | 6 | 4 | 4 | 20 | 31 | — | 280 | 84 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 303 | 145 | 130 | 309 | 137 | 256 | 184 | 114 | 292 | 295 | 292 | 302 | 293 | 265 | 296 | 321 | 228 | 38 | 255 | 7 |
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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