Surf Forecasts:
Fishermans (Rhiw) surf forecast from 19 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 10PM (local time) - 4.5ft (1.3m), 7s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 1AM (local time) - 4.5ft (1.3m), 9s period, SW swell with 262 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 10PM (local time) - 4.5ft (1.3m), 7s period with SW swell.
Best Forecast Surf Conditions for Fishermans (Rhiw) this week:
The surf forecast for Fishermans (Rhiw) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 25) at 10PM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 0.1m and 13s. Another secondary swell of 0.1m and 13s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Fishermans (Rhiw) in the next 16 days are 1.3m 9s and forecast to arrive on Wednesday (Aug 26) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Thursday (Aug 20) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Tue 25th Aug) | 4.5ft (1.3m) 7s |
| Best Surf | 10PM (Tue 25th Aug) | 4.5ft (1.3m) 7s |
| Most Powerful | 1AM (Wed 26th Aug) | 4.5ft (1.3m) 9s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what we’ve got coming up for Fishermans (Rhiw).
To be straight with you, this is a tough outlook. For the first week or so, there’s basically nothing worth paddling out for. We’re looking at a long, quiet run with hardly any energy in the water. It’s not until we start moving into the end of August and the opening of September that the ocean remembers it’s supposed to have some pulse. But even then, the wind and conditions make it a tricky call.
None of the surf in this 16-day window really stands out as a classic day. The one moment that might get you out of bed is the late shift around the 29th of August. On Saturday afternoon we see a pulse of 3ft swell from the SW, with a period of 8 seconds. The combined wave energy hits 84 (84), so it’s not massive but there’s a little bit of grunt. The wind swings offshore from the NNE at 16 mph. Fishermans is a reef setup that prefers a NNE offshore, and that’s exactly what we get – moderate offshore and clean conditions. It’s a beginner-friendly wave, so if the tide lines up, this is your window of the whole outlook. Just keep in mind crowds are just “sometimes,” so you could have it reasonably quiet.
The rest is mostly frustrating. The swell that builds around the 30th and 31st of August grows – 5ft to 7ft and then near 6ft from the WSW – but the wind is all wrong. Strong breezes up to 25 mph, cross-off or cross-on, and the wave energy jumps to 549 (549) on the 31st morning, making it powerful, but it’s messy and lumpy. The period is short at 7-9 seconds, so it won’t have that clean groundswell shape. This is one of those situations where the setup looks more interesting for kite surfing than paddle surfing, given the strong wind and poor quality.
Through the first week of September, it stays poor. The wind stays onshore or cross, coming strong from the SW or W, and the swell never gets clean enough to recommend. Energy is moderate at best, but the conditions just aren’t there.
So, realistically, you’ve got a long wait, a small window on the 29th for a clean, small session, and then a lot of blown-out or messy swell after that. Keep your eye on the forecasts, but for now, that Saturday afternoon is the one to pencil in.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Wed night. Very mild (max 17°C on Wed night, min 13°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Mon afternoon, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 4 | SW 4 | WSW 6 | SW 7 | SW 7 | SW 6 | SW 13 | W 16 | W 16 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 4 | SW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 16 | 90 | 46 | 22 | 10 | 7 | 7 | 7 | 9 | 9 | 8 | 8 | 7 | 8 | 8 | 7 | 7 | 7 | 12 | 262 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on |
High Tide | 1:22PM3.21m | 1:46AM3.14m | 2:11PM2.93m | 2:45AM2.80m | 3:22PM2.70m | 4:14AM2.59m | 5:01PM2.65m | 5:49AM2.62m | 6:22PM2.82m | 6:54AM2.80m | 7:16PM3.08m | 7:39AM3.02m | 7:55PM3.37m | ||||||||
Low Tide | 7:48AM0.95m | 7:59PM1.07m | 8:27AM1.25m | 8:50PM1.34m | 9:23AM1.49m | 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 | |||||||
 | |  | |  |  |  | |  |  | | | | | | | | | | | | |
 | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — |
 | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:28 | — | — | 8:25 | — | — | 8:23 | — |
mm | 1 | 1 | 6 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 17 | 15 | 15 | 14 | 14 | 15 | 14 | 14 | 15 | 14 | 14 | 16 | 16 | 17 | 19 | 18 | 16 | 17 | 16 |
Feels °C | 11 | 11 | 14 | 10 | 8 | 10 | 9 | 10 | 9 | 10 | 11 | 10 | 11 | 12 | 12 | 15 | 15 | 14 | 14 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | W 16 | NW 4 | SW 16 | SW 7 | SW 7 | SW 6 | WSW 6 | WSW 6 | SW 6 | SW 15 | SW 15 | SW 15 | NNW 5 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | WSW 3 | SW 13 | SW 9 |
| kJ | 5 | 2 | 10 | 46 | 22 | 10 | 3 | 3 | 1 | 9 | 9 | 8 | 4 | 7 | 8 | 8 | 7 | 7 | 1 | 7 | 262 |
Swell 2 Height (m) Direction Period (s) | W 16 | — | — | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | W 6 | W 12 | W 12 | SW 14 | W 9 | — | — | — | — | SW 13 | — | — |
| kJ | 5 | — | — | 8 | 8 | 8 | 7 | 7 | 7 | 1 | 3 | 3 | 8 | 2 | — | — | — | — | 7 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 14 | — | W 16 | W 16 | W 10 | — | W 12 | — | — | W 8 | — | — | W 8 | — | — | — |
| kJ | — | — | — | — | — | 4 | — | 5 | 5 | 2 | — | 3 | — | — | 1 | — | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | SW 4 | WSW 6 | NW 4 | NNW 5 | NNW 4 | NW 5 | NW 4 | NNW 4 | NNW 5 | NNW 4 | NNW 3 | — | NW 4 | — | — | — | — | S 3 | SSW 4 | SSE 4 |
| kJ | 17 | 16 | 90 | 27 | 57 | 14 | 17 | 13 | 10 | 17 | 20 | 4 | — | 4 | — | — | — | — | 2 | 12 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 292 | 292 | 123 | 129 | 142 | 129 | 129 | 129 | 303 | 137 | 137 | 184 | 216 | 308 | 256 | 292 | 292 | 292 | 134 | 107 | 33 |
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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