Surf Forecasts:
Fishermans (Rhiw) surf forecast from 13 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 10AM (local time) - 5.5ft (1.7m), 6s period, WSW swell with 199 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 1.7m 6s and forecast to arrive on Wednesday (Aug 19) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Thursday (Aug 20) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (Wed 19th Aug) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Hey crew, Rusty here. Let's take a look at what's shaking for us at Fishermans (Rhiw).
I won't sugarcoat it: the next couple of weeks look pretty quiet. We're looking at a long, flat spell from Thursday the 13th of August through most of the second week, with hardly a ripple worth paddling for.
Water temp is running about two degrees warmer than average for the calendar, sitting at 64°F, which is a touch warmer than normal but doesn't change the fact there's no surf.
Going through it. Thursday the 13th is flat out. Friday the 14th sees a 2ft SW swell, but with a pathetic 4-second period, it's got no push. Combined energy is a weak 19. Saturday and Sunday are even smaller. From the 17th through the 25th, the swell barely nudges above 0.3ft, with a couple of pulses to about 1ft. On Tuesday the 18th of August, we get a 3ft WSW pulse with a 6-second period and combined energy hitting 85 (weak). But the wind is cross-shore and then onshore, so it'll be a mess.
The only window of opportunity comes right at the tail end. Thursday the 27th of August morning brings a 2ft SSW swell, and Thursday afternoon bumps up to 3ft from the SW with a 6-second period, combined energy reaching 71 (weak). The wind is screaming offshore – NNE at 18 mph – which will clean it up nicely. Friday the 28th of August holds similar, small but clean conditions with fresh offshore breezes. The period is short, so the waves will be a bit fat and crumbly, but it'll be the cleanest we've got.
So there you have it. A dry spell for a week and a half, but the very end of the period, around the 27th and 28th of August, shapes up as the only real session. Small, clean, offshore – a classic morning or evening paddle for the die-hards. It's a long way out, so keep your fingers crossed.
Rusty, out.
Short Range ForecastMostly dry. Warm (max 21°C on Thu afternoon, min 13°C on Sat night). Winds increasing (calm on Thu night, fresh winds from the NNW by Sat morning). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Tue morning. Very mild (max 19°C on Tue afternoon, min 14°C on Sun morning). Winds increasing (light winds from the NNE on Sun morning, fresh winds from the WSW by Tue morning). | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||
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 8 | SW 8 | WSW 4 | SW 4 | SW 4 | WSW 7 | WSW 7 | WSW 7 | SW 7 | SW 7 | W 7 | W 7 | SW 3 | WSW 4 | SW 4 | WSW 6 | SW 6 | WSW 5 | WSW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 14 | 13 | 9 | 5 | 5 | 5 | 5 | 2 | 2 | 1 | 1 | 2 | 1 | 12 | 96 | 75 | 117 | 199 | 109 | 29 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | glassy | cross-off | off | cross-off | cross-off | off | off | cross-on | on | cross-off | cross-off | on | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 9:37PM4.49m | 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 | ||||||||
Low Tide | 4:15PM0.11m | 4:46AM-0.19m | 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 | ||||||||
 |  |  | |  | | | | | | |  | | |  |  | | | | | | |
 | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — |
 | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 3 | — | — | — | — | 1 |
Temp °C | 20 | 21 | 19 | 18 | 17 | 17 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 17 | 17 | 17 | 19 | 18 | 16 | 17 | 16 |
Feels °C | 20 | 21 | 19 | 20 | 14 | 13 | 9 | 11 | 12 | 14 | 13 | 15 | 15 | 15 | 15 | 13 | 17 | 14 | 11 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 8 | SW 8 | SW 4 | SW 4 | WSW 7 | WSW 7 | WSW 7 | SW 7 | N 4 | — | SW 4 | — | WSW 4 | — | W 16 | — | — | — | NW 5 | SW 6 |
| kJ | 17 | 14 | 2 | 9 | 5 | 5 | 5 | 5 | 2 | 1 | — | 1 | — | 1 | — | 5 | — | — | — | 8 | 29 |
Swell 2 Height (m) Direction Period (s) | — | SW 10 | SW 9 | — | SW 8 | — | W 10 | — | — | SW 7 | W 7 | W 7 | W 7 | W 7 | — | — | — | — | — | W 15 | SW 16 |
| kJ | — | 4 | 3 | — | 2 | — | 2 | — | — | 2 | 1 | 1 | 1 | 1 | — | — | — | — | — | 5 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | W 6 | SW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WSW 4 | — | NNW 3 | N 4 | NNW 4 | NNW 4 | NNW 3 | — | NW 4 | — | SW 3 | — | SW 4 | WSW 6 | SW 6 | WSW 5 | WSW 6 | SW 6 | NW 4 |
| kJ | — | — | 13 | — | 1 | 9 | 17 | 29 | 2 | — | 1 | — | 2 | — | 12 | 96 | 75 | 117 | 199 | 109 | 31 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 129 | 335 | 129 | 142 | 498 | 146 | 373 | 535 | 297 | 256 | 295 | 317 | 298 | 329 | 305 | 317 | 7 | 129 | 498 | 498 | 356 |
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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