Surf Forecasts:
Fishermans (Rhiw) surf forecast from 31 Jul 2026:
- Most powerful swell: Friday 31 Jul, 10PM (local time) - 3.5ft (1.0m), 5s period, WSW swell with 48 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 5s and forecast to arrive on Friday (Jul 31) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Sunday (Aug 02) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Fri 31st Jul) | 3.5ft (1.0m) 5s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s get straight into it.
To be honest, the 16-day window is mostly a flat spell for Fishermans (Rhiw) – a real quiet patch. For the first week and beyond, the swell is tiny, barely mustering up anything rideable. There are a few scattered moments where the conditions look clean, but the heights are just too small to get excited about.
On Monday morning, August 3rd, there’s a slight pulse – combined energy of all swells directed here hits 24 (weak), with a 1ft southwest swell and a 9-second period. It’s not much, but the wind is light and cross-shore, so if you’re desperate for a splash on a longboard, you could scratch out a few knee-high wobbles. By the afternoon, the energy picks up a little to 29 (still weak) and the wind shifts light cross-offshore, keeping it clean. Still, calling this "surf" is a stretch.
Tuesday morning, August 4th, offers a rare moment – glassy conditions with 1ft from the southwest, but the combined energy is only 16 (weak). It’s flat, but it’s pretty flat. A beginner might enjoy the calm water, but there’s no real wave to speak of.
From there, it’s more of the same: a few clean afternoons with cross-offshore winds, but the swell rarely cracks 1ft. By August 7th, we get a 0.3ft, 12-second groundswell – that’s a long-period pulse, but it’s too small to break properly at this reef. The wind is offshore and clean, but with no height, it’s a skunk session.
After August 10th, the swell essentially disappears – combined energy drops to single digits and zeros. There’s nothing on offer for a solid stretch from mid-August onward. If you’re after proper waves, this isn’t the time or place.
No standout options here – just a long, flat run. It’s one of those rare blank periods that makes you wish you’d checked the forecast before loading the boards.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri night. Very mild (max 18°C on Fri night, min 13°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon morning, min 16°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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 | WSW 3 | SW 5 | SW 5 | SW 5 | SW 9 | WSW 4 | SW 8 | WSW 9 | SW 9 | WSW 9 | SW 8 | SW 8 | SW 7 | SW 7 | SW 7 | SSW 7 | SW 6 | SW 6 | SW 6 | SW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 5 | 24 | 7 | 6 | 3 | 3 | 3 | 7 | 20 | 29 | 34 | 16 | 14 | 8 | 15 | 38 | 18 | 9 | 5 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross | on | cross-on | cross-off | cross-off | off | cross | cross-off | cross-off | glassy | cross-on | off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 10:12AM3.60m | 10:28PM4.05m | 10:45AM3.65m | 11:01PM4.09m | 11:19AM3.67m | 11:35PM4.06m | 11:55AM3.63m | 00:13AM3.95m | 12:35PM3.54m | 00:55AM3.78m | 1:21PM3.39m | 1:44AM3.54m | 2:16PM3.21m | 2:46AM3.30m | |||||||
Low Tide | 4:56AM0.36m | 5:00PM0.43m | 5:30AM0.33m | 5:33PM0.45m | 6:04AM0.36m | 6:06PM0.52m | 6:38AM0.44m | 6:40PM0.64m | 7:14AM0.58m | 7:17PM0.80m | 7:54AM0.76m | 8:01PM0.97m | 8:43AM0.96m | 9:00PM1.14m | |||||||
 | |  | | |  |  |  |  | | | | | | | | | | | |  | |
 | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:43 | — | — |
 | — | — | 9:14 | — | — | 9:12 | — | — | 9:09 | — | — | 9:08 | — | — | 9:07 | — | — | 9:05 | — | — | 9:02 |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 18 | 14 | 15 | 15 | 17 | 18 | 18 | 20 | 20 | 19 | 17 | 17 | 17 | 17 | 16 | 17 | 16 | 16 | 16 |
Feels °C | 11 | 11 | 13 | 12 | 13 | 14 | 16 | 14 | 13 | 19 | 17 | 17 | 17 | 16 | 16 | 16 | 14 | 15 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 5 | NW 4 | SW 5 | SW 5 | SW 5 | WSW 4 | WSW 4 | SW 8 | N 3 | SW 9 | WSW 9 | SW 8 | SW 8 | SW 7 | SW 7 | SW 7 | W 13 | SW 6 | SW 6 | SW 6 | SW 6 |
| kJ | 5 | 2 | 24 | 7 | 6 | 1 | 1 | 3 | 2 | 20 | 29 | 34 | 16 | 14 | 8 | 15 | 3 | 18 | 9 | 5 | 5 |
Swell 2 Height (m) Direction Period (s) | — | — | W 12 | W 10 | NW 4 | SW 9 | SW 8 | — | WSW 9 | — | — | NNW 3 | — | — | — | — | — | NW 4 | NW 4 | — | — |
| kJ | — | — | 3 | 2 | 2 | 3 | 3 | — | 7 | — | — | 1 | — | — | — | — | — | 1 | 2 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | W 9 | — | — | — | SW 10 | — | — | — | — | — | — | — | — | W 13 | W 13 | W 12 | SW 12 |
| kJ | — | — | — | — | 2 | — | — | — | 4 | — | — | — | — | — | — | — | — | 3 | 3 | 3 | 6 |
Wind waves Height (m) Direction Period (s) | NW 4 | WSW 3 | NW 3 | NW 4 | — | — | — | NNW 2 | ENE 3 | ESE 3 | — | — | — | — | — | ESE 2 | SSW 7 | — | — | NW 4 | — |
| kJ | 3 | 5 | 1 | 5 | — | — | — | 1 | 1 | 4 | — | — | — | — | — | 1 | 38 | — | — | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 319 | 535 | 321 | 308 | 319 | 292 | 292 | 295 | 134 | 107 | 297 | 114 | 190 | 137 | 114 | 114 | 130 | 114 | 344 | 627 | 313 |
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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