
Surf Forecasts:
Fishermans (Rhiw) surf forecast from 7 Sep 2026:
- Most powerful swell: Monday 7 Sep, 10PM (local time) - 7ft (2.2m), 7s period, WSW swell with 444 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 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 1.7m 6s period and expected on Tuesday (Sep 08) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Mon 7th Sep) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Right, pull up a seat. Rusty here. It’s been a tough stretch for surf around here, and this outlook is no different. I’m looking at the next sixteen days, and the honest truth is there’s barely a ripple worth paddling for. We’re looking at a long, dry spell with almost nothing on the table. Let’s get into it.
The First Week: September 7th to September 13th
From Monday the 7th right through to Sunday the 13th, it’s a write-off. The wind is howling from the wrong directions – a lot of onshore and cross-onshore junk – and the swell is either tiny or mangled. We get a few pulses of energy, like on Monday afternoon when the combined energy hits 144 (moderate), but with a 5ft onshore slop and a period of only 6 seconds, it’s just a washing machine. Thursday morning the 10th has a 5ft swell from the SW, but the onshore wind is 22 mph, making it a complete mess. There’s no way you’d want to be out there.
The only glimmer comes on Wednesday morning the 9th. The wind swings to a cross-offshore NW breeze at 16 mph, and there’s a clean 2ft swell from the WSW with a period of 8 seconds. It’s clean, but the combined energy is only 52 (weak). It’s surfable if you are absolutely desperate and have a longboard, but it’s far from good.
The Second Week: September 14th to September 22nd
This next week is only marginally better, but still nothing to write home about. The real standout, if you can call it that, comes on the morning of Tuesday the 15th. For a brief window, we get a clean 4ft swell from the W with a period of 5 seconds, and the wind is a light, cross-offshore NW breeze at 9 mph. The combined energy is 74 (weak), but it’s the most surfable looking wave in the whole forecast. It’s small, but it’s clean.
Then, on the morning of Thursday the 17th, we see a bigger bump. A 6ft swell from the SSW rolls in, with a period of 6 seconds and strong moderate cross-shore energy of 170 (moderate). The wind is cross-shore from the ESE at 12 mph, which will create some chop. This is for the more experienced crew – anything over 5ft gets a bit much for beginners with this kind of period. The afternoon cleans up slightly with a 5ft swell and a gentle cross-shore.
Towards the very end, on Monday the 21st, we get a bizarre little pulse. A 0.3ft swell from the W with a very long period of 13 seconds, and a strong offshore wind from the North at 25 mph. The water will be glassy, but with that tiny size, you’ll be scratching for anything. A long period groundswell like that would be magic at a point break, but here it’s just not enough push.
Honestly, the whole sixteen days is a flat, windy mess. Fishermans (Rhiw) is a reef that likes a solid SW groundswell, and we’re just not getting it. The water temp is sitting at 63°F, which is a touch warmer than normal for the time of year. For most of this, the setup looks more interesting for a kite than a paddle. Keep the board in the van, lads.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Very mild (max 16°C on Mon morning, min 13°C on Tue morning). Winds decreasing (strong winds from the SW on Mon afternoon, light winds from the SW by Wed afternoon). | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Sat afternoon. Very mild (max 18°C on Sat night, min 14°C on Thu night). Winds increasing (calm on Fri afternoon, strong winds from the SW by Sat afternoon). | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 14 | SW 5 | WSW 7 | W 5 | W 5 | WSW 6 | WSW 8 | SW 8 | SW 8 | SW 4 | SW 6 | SW 6 | SW 7 | SW 7 | SW 8 | SW 5 | SW 6 | SW 7 | SW 7 | SW 7 | SW 4 |
Wave Graph | |||||||||||||||||||||
52 | 94 | 373 | 75 | 71 | 23 | 52 | 31 | 15 | 25 | 144 | 139 | 46 | 24 | 28 | 47 | 228 | 163 | 50 | 29 | 18 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross | cross | cross-off | cross-off | cross-on | on | on | on | cross-on | cross-off | cross-off | on | on | on | cross-on | cross | cross | on |
High Tide | 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 | 9:39AM4.09m | 9:55PM4.48m | 10:15AM4.11m | 10:32PM4.37m | ||||||||
Low Tide | 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 | 4:21AM-0.15m | 4:29PM0.06m | 4:55AM-0.05m | 5:03PM0.13m | ||||||||
6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:46 | — | — | 6:48 | — | — | |
— | 7:53 | — | — | 7:51 | — | — | 7:49 | — | — | 7:46 | — | — | 7:44 | — | — | 7:42 | — | — | 7:39 | — | |
mm | — | — | 4 | — | — | — | — | — | — | — | — | 3 | — | — | — | 1 | 6 | 2 | — | — | — |
Temp °C | 16 | 16 | 15 | 14 | 16 | 15 | 13 | 14 | 15 | 16 | 16 | 17 | 14 | 15 | 14 | 15 | 15 | 18 | 16 | 16 | 16 |
Feels °C | 11 | 10 | 8 | 7 | 8 | 7 | 8 | 10 | 11 | 11 | 10 | 13 | 9 | 14 | 11 | 9 | 8 | 14 | 13 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 14 | NW 4 | — | WSW 11 | — | WSW 6 | WSW 8 | NNW 5 | SW 8 | — | — | — | SW 7 | SW 7 | SW 8 | — | — | — | SW 7 | SW 7 | — |
52 | 3 | — | 22 | — | 23 | 52 | 15 | 15 | — | — | — | 46 | 24 | 28 | — | — | — | 50 | 29 | — | |
Swell 2 Height (m) Direction Period (s) | WSW 10 | — | — | — | — | SW 10 | — | SW 8 | NNW 4 | — | — | — | — | NNW 4 | NW 4 | — | — | — | NW 4 | NNW 4 | — |
9 | — | — | — | — | 4 | — | 31 | 2 | — | — | — | — | 13 | 1 | — | — | — | 7 | 1 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 6 | SW 5 | WSW 7 | W 5 | W 5 | NW 6 | NNW 5 | — | SW 4 | SW 4 | SW 6 | SW 6 | NW 4 | — | — | SW 5 | SW 6 | SW 7 | — | — | SW 4 |
47 | 94 | 373 | 75 | 71 | 154 | 47 | — | 6 | 25 | 144 | 139 | 21 | — | — | 47 | 228 | 163 | — | — | 18 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 276 | 195 | 129 | 1043 | 296 | 137 | 296 | 146 | 297 | 309 | 137 | 129 | 146 | 129 | 188 | 255 | 257 | 303 | 305 | 136 |
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.










