Surf Forecasts:
Fishermans (Rhiw) surf forecast from 8 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 7PM (local time) - 7ft (2.1m), 7s period, SW swell with 404 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 2.1m 7s and forecast to arrive on Thursday (Sep 10) 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 Wednesday (Sep 09) at 1AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Thu 10th Sep) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight up – it’s been a while since we’ve had anything to smile about, and looking at the full picture for Fishermans (Rhiw), this run isn’t going to break that streak. The whole 16-day window is a write-off – literally every session is marked as poor, so there are no good surf options on offer. Best you leave the boards in the car for a fortnight.
The week kicks off with a bit of energy on Tuesday the 8th with a 5ft swell from the west, but it’s got a short period of only 5 seconds, a strong 19 mph cross wind, and the combined swell energy is a moderate 106. Doesn’t matter though – it’s messy and lumpy. Wednesday the 9th and Thursday the 10th offer nothing but onshore junk; Thursday afternoon has a bump to 6ft swell and combined energy jumping to 293, but with a 28 mph southerly slamming straight onshore and that same short period, it’s all chop and no shape – more for kite surfing than a proper paddle session.
From Friday the 11th through the second week, it’s tiny surf with heights dropping below 3ft. Periods hang around the 4 to 8 second mark, meaning no real push. A few mornings show clean conditions with a cross-off wind, but with swell heights at 2ft or less, there’s simply nothing to ride. Even the long period around 11-16 seconds that pops up on the 19th and 20th of September only generates tiny 0.3ft waves – enough for a sea breeze, not a surf. The blank run continues right through to the end on Wednesday the 23rd.
Unless the forecasts change, and they can, don’t hold your breath. When the water temp is sitting at 63° – a touch warmer than normal for the time of year – you know summer’s hanging on without any groundswell to show for it. Sometimes it’s just like that around here.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu afternoon. Very mild (max 18°C on Thu night, min 13°C on Tue night). Winds increasing (light winds from the WNW on Wed afternoon, strong winds from the SSW by Thu morning). | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Sat morning. Very mild (max 17°C on Sat afternoon, min 13°C on Fri night). Winds increasing (light winds from the SSW on Fri night, strong winds from the SW by Sat morning). | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 5 | WSW 6 | WSW 8 | NW 5 | SW 8 | SW 5 | SW 6 | SW 8 | SW 8 | SW 8 | SW 8 | SW 6 | SW 6 | SW 7 | SW 6 | SW 6 | SW 6 | SW 4 | SW 4 | SW 5 |
Wave Graph  | ||||||||||||||||||||
 kJ | 106 | 31 | 43 | 25 | 15 | 51 | 293 | 164 | 69 | 53 | 31 | 175 | 240 | 158 | 56 | 18 | 13 | 17 | 14 | 77 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | on | on | on | cross | cross-off | cross-off | on | on | on | cross-on | cross-off | cross-on | on | on | on | on |
High Tide | 7:03PM3.65m | 7:36AM3.52m | 7:53PM4.02m | 8:20AM3.78m | 8:36PM4.30m | 9:01AM3.98m | 9:16PM4.46m | 9:39AM4.09m | 9:55PM4.48m | 10:15AM4.11m | 10:32PM4.37m | 10:51AM4.02m | 11:09PM4.13m | |||||||
Low Tide | 2:16AM0.35m | 2:31PM0.47m | 3:02AM0.05m | 3:14PM0.23m | 3:43AM-0.12m | 3:53PM0.09m | 4:21AM-0.15m | 4:29PM0.06m | 4:55AM-0.05m | 5:03PM0.13m | 5:27AM0.15m | 5:36PM0.29m | ||||||||
 |  |  |  |  |  | |  | | |  |  | | | | | | | | | |
 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:46 | — | — | 6:48 | — | — | 6:48 | — | — |
 | 7:51 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — |
mm | 1 | — | — | — | — | — | 3 | — | — | — | 1 | 3 | — | — | — | — | — | — | — | — |
Temp °C | 16 | 15 | 13 | 14 | 15 | 16 | 17 | 18 | 13 | 14 | 14 | 16 | 17 | 17 | 15 | 15 | 17 | 17 | 17 | 18 |
Feels °C | 10 | 7 | 7 | 11 | 9 | 9 | 13 | 13 | 8 | 11 | 13 | 9 | 12 | 13 | 14 | 14 | 16 | 16 | 15 | 17 |
Swell 1 Height (m) Direction Period (s) | — | WSW 6 | WSW 8 | NW 5 | SW 8 | SW 8 | — | SW 8 | SW 8 | SW 8 | NNW 4 | — | — | — | SW 6 | SW 6 | — | WSW 6 | W 12 | W 8 |
| kJ | — | 31 | 43 | 25 | 15 | 2 | — | 164 | 69 | 53 | 1 | — | — | — | 56 | 18 | — | 4 | 3 | 1 |
Swell 2 Height (m) Direction Period (s) | — | WSW 10 | WSW 8 | SW 8 | NNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 9 | 7 | 22 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 8 | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | NW 6 | NW 6 | WNW 4 | SW 3 | SW 5 | SW 6 | — | NW 4 | NW 4 | SW 8 | SW 6 | SW 6 | SW 7 | — | — | SW 6 | SW 4 | SW 4 | SW 5 |
| kJ | 106 | 175 | 83 | 11 | 7 | 51 | 293 | — | 9 | 8 | 31 | 175 | 240 | 158 | — | — | 13 | 17 | 14 | 77 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 498 | 296 | 137 | 7 | 188 | 325 | 464 | 123 | 129 | 2 | 129 | 255 | 338 | 139 | 2 | 107 | 188 | 136 | 296 | 142 |
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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