Surf Forecasts:
Fishermans (Rhiw) surf forecast from 16 Aug 2026:
- Most powerful swell: Wednesday 19 Aug, 7PM (local time) - 5.5ft (1.7m), 6s period, WSW swell with 204 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 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Thursday (Aug 20) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 19th Aug) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
G'day, Rusty here, and I've got to be straight with you – the next couple of weeks are looking pretty flat and disappointing for us. We're not seeing much in the way of decent surf, and it's gonna be a long wait for anything that's even worth a mention.
Let's start with the good news, such as it is. The only spot that's got any life in this whole 16-day window is Fishermans (Rhiw). It's a reef break, so it needs a bit of size and direction to get going, and it's fairly consistent. The water's sitting at 65°F, which is a good 4°F warmer than usual for this time of year – that's a nice little bonus if you're in the water.
But the problem is, for the first week and a half, we're looking at a total drought. From Sunday the 16th right through to the 27th of August, the swell is tiny, mostly around 0.3 ft to 2 ft, and even when there's a bit of energy mid-week, the wind is howling and ruining any chance of a clean wave. On Wednesday the 19th, we get a jump in combined energy up to 117 (moderate energy), but the swell is a weak 5 ft from the WSW with a short period of 5 seconds, and it's getting smashed by 25 mph onshore winds. That's not surf, that's a washing machine. It's a better setup for kite surfing than paddle surfing.
The first real glimmer of hope doesn't come until Friday the 28th of August. The morning shows a 4 ft SW swell with a period of 6 seconds, and the combined energy climbs to 126 (moderate). The wind is light and cross-offshore, so the conditions are clean. The wave comment says "surfable waves but very ordinary conditions," and it scores a 1 out of 10, so it's not a standout, but it's the only thing on the whole forecast that's even surfable. The afternoon on the 28th gets a bit bigger at 5 ft (161 combined energy), but the wind picks up and the conditions drop off.
After that, it's back to nothing. The 29th and 30th of August have offshore winds but the swell is only 2 ft to 2 ft.
So, to be honest, there's not a single day I'd call a standout. The best on offer is the morning of Friday the 28th of August at Fishermans (Rhiw) – it's your only chance, and it's not going to be epic. The rest of the time, you're better off checking the forecast again in a few days. It's a long, blank run for this area, but it happens.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Very mild (max 18°C on Mon night, min 14°C on Sun morning). Winds increasing (calm on Sun morning, fresh winds from the WNW by Tue night). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Wed afternoon. Very mild (max 17°C on Wed afternoon, min 13°C on Thu night). Winds decreasing (strong winds from the WSW on Wed night, light winds from the NW by Fri morning). | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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 7 | SW 7 | SW 3 | WSW 5 | SW 5 | SW 4 | SW 6 | WSW 6 | W 4 | WSW 5 | WSW 6 | WSW 6 | WSW 6 | SW 7 | SW 6 | SW 14 | W 16 | W 16 | SW 15 | SW 15 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 2 | 2 | 3 | 9 | 6 | 22 | 33 | 22 | 16 | 117 | 171 | 185 | 71 | 44 | 9 | 7 | 7 | 7 | 9 | 9 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | on | cross-off | cross-on | cross-on | cross-off | on | cross | cross-on | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off |
High Tide | 11:22AM3.91m | 11:40PM4.24m | 12:01PM3.72m | 00:20AM3.91m | 12:40PM3.48m | 1:01AM3.53m | 1:22PM3.21m | 1:46AM3.14m | 2:11PM2.93m | 2:45AM2.80m | 3:22PM2.70m | 4:14AM2.59m | 5:01PM2.65m | ||||||||
Low Tide | 6:09PM0.29m | 6:39AM0.30m | 6:44PM0.52m | 7:13AM0.62m | 7:20PM0.79m | 7:48AM0.95m | 7:59PM1.07m | 8:27AM1.25m | 8:50PM1.34m | 9:23AM1.49m | 10:11PM1.52m | 10:58AM1.60m | 00:02AM1.51m | ||||||||
 |  |  | | |  | | |  | |  |  |  |  | | | | | | |  | |
 | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — |
mm | — | — | — | — | — | 2 | — | — | — | — | 1 | 2 | 1 | — | 1 | — | — | — | — | — | — |
Temp °C | 15 | 16 | 17 | 16 | 16 | 18 | 16 | 17 | 18 | 15 | 17 | 16 | 15 | 16 | 14 | 13 | 15 | 14 | 14 | 15 | 15 |
Feels °C | 14 | 14 | 18 | 15 | 16 | 16 | 14 | 14 | 16 | 7 | 11 | 9 | 9 | 11 | 9 | 9 | 10 | 9 | 9 | 9 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 7 | SW 7 | W 7 | WSW 5 | SW 5 | — | SW 6 | WSW 6 | — | — | — | — | WSW 6 | SW 7 | SW 6 | WSW 6 | WSW 5 | SW 5 | SW 15 | SW 15 | NNW 4 |
| kJ | 2 | 2 | 1 | 9 | 6 | — | 33 | 22 | — | — | — | — | 71 | 44 | 9 | 3 | 3 | 1 | 9 | 9 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | W 16 | NW 4 | — | — | — | — | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | W 5 | SW 12 | SW 15 |
| kJ | — | — | — | — | — | — | 5 | 2 | — | — | — | — | 8 | 8 | 8 | 7 | 7 | 7 | 1 | 6 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 17 | — | — | — | — | — | — | — | — | W 16 | W 16 | W 5 | — | SW 12 |
| kJ | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | 5 | 5 | 1 | — | 6 |
Wind waves Height (m) Direction Period (s) | — | — | SW 3 | — | — | SW 4 | NW 3 | WNW 4 | W 4 | WSW 5 | WSW 6 | WSW 6 | NW 5 | NW 6 | NNW 5 | NW 5 | NW 5 | NNW 4 | NNW 4 | NW 4 | NE 2 |
| kJ | — | — | 3 | — | — | 22 | 1 | 1 | 16 | 117 | 171 | 185 | 74 | 149 | 40 | 42 | 34 | 27 | 10 | 4 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 292 | 310 | 186 | 298 | 329 | 464 | 129 | 1171 | 297 | 320 | 356 | 297 | 285 | 285 | 142 | 142 | 319 | 137 | 303 | 184 | 184 |
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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