Surf Forecasts:
Fishermans (Rhiw) surf forecast from 5 Sep 2026:
- Most powerful swell: Monday 7 Sep, 7PM (local time) - 7ft (2.2m), 7s period, SW swell with 447 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 2.2m 7s and forecast to arrive on Monday (Sep 07) 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 1.3m 5s period and expected on Friday (Sep 11) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Mon 7th Sep) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be real about this stretch – we’re looking at a pretty grim run of surf for Fishermans (Rhiw). The next week and a half is basically a write-off, with no good waves on offer for paddle surfing. The first proper swell we see kicks up around Monday the 7th, but it's a total mess – strong, messy cross-onshore winds right through to the 8th, with wave heights hitting 6ft to 6ft and combined energy reading 216 to 281, but the wind is absolutely ruining it. That’s more of a kite session than a surf session. From the 9th through the 12th, we get a mix of lumpy, choppy, and weak conditions, with wave heights dropping from 5ft down to 1ft. The energy is weak to moderate, and the wind is all over the place.
There’s a brief glimmer on Friday the 11th morning – a clean, cross-offshore breeze from the NW, but the swell is only 4ft from the W with a short period of 5 seconds and weak energy (66), so it’s small and weak. Not a standout. After that, we get a very flat spell from the 12th afternoon through to the 19th, with wave heights barely hitting 2ft and combined energy dropping to single digits. The water temperature is about average for the time of year.
The only real promise in this whole 16-day window is on the very last day, Sunday the 20th. That morning we’ve got a tiny 0.3ft swell from the west, but get this – a 14-second period. That’s a very long-period groundswell, and with a clean, gentle offshore breeze from the NNE, the conditions will be glassy. The energy is super weak (5), but the combination of that long period and offshore wind at a reef break like Fishermans (Rhiw) could produce a rare, clean little wave. It’s a long-range call, so don’t bank on it, but it’s the only thing that looks remotely interesting for a patient surfer.
Rusty out.
Short Range ForecastLight rain (total 5mm), mostly falling on Sat night. Very mild (max 19°C on Sun morning, min 14°C on Fri night). Winds increasing (light winds from the WSW on Sat morning, strong winds from the SW by Mon afternoon). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Wed night. Very mild (max 17°C on Thu morning, min 13°C on Mon night). Winds decreasing (strong winds from the WSW on Tue morning, light winds from the WSW by Wed night). | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 6 | SW 6 | SSW 4 | SW 5 | SW 6 | SW 6 | WSW 5 | SW 6 | WSW 7 | WSW 6 | WSW 6 | W 6 | WSW 6 | SW 6 | WSW 5 | SW 7 | SW 7 | WSW 5 | W 5 | W 5 | WSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 49 | 17 | 13 | 25 | 50 | 96 | 61 | 216 | 241 | 281 | 271 | 178 | 43 | 38 | 48 | 192 | 93 | 33 | 66 | 55 | 20 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | on | cross-on | cross-on | cross-on | cross-off | cross | cross |
High Tide | 3:02PM3.03m | 3:52AM2.93m | 4:36PM3.02m | 5:28AM2.98m | 6:01PM3.28m | 6:41AM3.22m | 7:03PM3.65m | 7:36AM3.52m | 7:53PM4.02m | 8:20AM3.78m | 8:36PM4.30m | 9:01AM3.98m | 9:16PM4.46m | ||||||||
Low Tide | 9:38AM1.30m | 10:31PM1.24m | 11:19AM1.31m | 00:09AM1.06m | 12:42PM1.09m | 1:21AM0.71m | 1:43PM0.77m | 2:16AM0.35m | 2:31PM0.47m | 3:02AM0.05m | 3:14PM0.23m | 3:43AM-0.12m | 3:53PM0.09m | ||||||||
 |  |  | |  |  | |  |  | | |  | | | | | | | | | | |
 | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — |
 | — | 7:59 | — | — | 7:55 | — | — | 7:53 | — | — | 7:51 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — |
mm | — | — | 2 | — | — | — | — | 3 | 1 | — | — | — | — | — | 4 | — | — | — | — | — | — |
Temp °C | 14 | 15 | 15 | 19 | 19 | 17 | 15 | 15 | 16 | 15 | 16 | 14 | 15 | 15 | 16 | 17 | 17 | 17 | 14 | 15 | 15 |
Feels °C | 12 | 12 | 11 | 13 | 14 | 13 | 10 | 7 | 10 | 7 | 9 | 6 | 9 | 9 | 12 | 13 | 12 | 13 | 6 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | NW 5 | NW 4 | WSW 6 | SW 5 | W 13 | W 16 | — | — | — | — | — | — | WSW 6 | NW 5 | NNW 4 | — | WSW 7 | WSW 7 | — | WSW 8 | WSW 6 |
| kJ | 19 | 7 | 4 | 25 | 3 | 5 | — | — | — | — | — | — | 43 | 22 | 2 | — | 79 | 33 | — | 7 | 20 |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | SW 13 | — | W 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 8 |
| kJ | 7 | 7 | 7 | 7 | — | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 |
Swell 3 Height (m) Direction Period (s) | — | SW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | SW 6 | SSW 4 | SSE 3 | SW 6 | SW 6 | WSW 5 | SW 6 | WSW 7 | WSW 6 | WSW 6 | W 6 | NW 5 | SW 6 | WSW 5 | SW 7 | SW 7 | WSW 5 | W 5 | W 5 | NW 5 |
| kJ | 49 | 17 | 13 | 4 | 50 | 96 | 61 | 216 | 241 | 281 | 271 | 178 | 65 | 38 | 48 | 192 | 93 | 30 | 66 | 55 | 66 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 240 | 136 | 188 | 398 | 195 | 356 | 276 | 123 | 276 | 464 | 553 | 346 | 319 | 292 | 7 | 464 | 236 | 296 | 366 | 130 |
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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