Surf Forecasts:
Fishermans (Rhiw) surf forecast from 8 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 10PM (local time) - 1.5ft (0.4m), 9s period, SW swell with 21 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 0.4m 9s and forecast to arrive on Wednesday (Aug 12) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Friday (Aug 14) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Wed 12th Aug) | 1.5ft (0.4m) 9s |
Table - best surf conditions forecast for Fishermans (Rhiw) over the next 16 days.
The Lowdown
Alright, let’s get real about this stretch. Rusty here, peering at the charts for Fishermans (Rhiw), and I’ll be honest—this is a tough one. The whole 16-day outlook is one long, quiet spell. There’s no good surf on the cards. Day after day, the call is for poor surf conditions. The waves are barely a ripple, with the combined swell energy staying weak—under 100 (like 6, 11, 3, 14, 17, all tiny numbers). The swell is mostly a pathetic 0.3 ft to 1 ft, maybe a hiccup up to 1 ft, but nothing that’ll get you out of bed.
We kick off from Saturday, 8th August, with a messy 0.3 ft swell from the SW, cross-on wind, and it’s all just a frustrating flat spell. A few mornings, like Sunday 9th, it’s glassy, but still only 1 ft of weak, short-period swell—not enough to wrap a reef. The wind flips from glassy to cross-off to onshore, but the waves stay tiny. The only real pulse comes much later, around Tuesday 18th August, where the swell jumps to 6 ft from the WSW, with a period of 6 seconds and moderate energy (247). That’s a steep, short-period beasty, and with a NNW cross-off wind, it’ll be clean but fat. Still, the guidance rates it as poor surf, and for a reef break, that short period is sloppy. After that, it drops back down to nothing.
Then on Friday 21st August, we get another little spike: 6 ft from the SW, but with a strong onshore wind, so it’s just bumpy and messy. Not worth paddling out. The very end of the outlook, Sunday 23rd August, is back to 0.3 ft with a long-period 14-second groundswell, but it’s clean and cross-off—still, no power.
The water temperature is about average for the time of year, so no drama there. But honestly, this is a stretch with no standouts, no good options. If you’re a surfer around here, take the longboard for a sunrise paddle, but don’t expect to catch anything. The forecasts can change, but right now, it’s a blank run. For the kite surfers, maybe there’s a window when the wind is up and the swell is flat, but for the rest of us, it’s a waiting game.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 14°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Wed afternoon, min 17°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 11 | SW 8 | WSW 7 | SW 6 | SW 12 | WSW 3 | WSW 4 | WSW 6 | SW 7 | SW 6 | SW 6 | W 12 | WSW 10 | WSW 10 | SW 9 | SW 8 | WSW 9 | WSW 8 | SW 5 | SW 5 | WSW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 5 | 3 | 5 | 7 | 6 | 1 | 2 | 3 | 2 | 2 | 2 | 3 | 10 | 10 | 21 | 17 | 7 | 7 | 6 | 4 | 6 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | glassy | on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | glassy | cross-on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:04AM3.13m | 4:48PM3.08m | 5:29AM3.15m | 6:06PM3.28m | 6:42AM3.33m | 7:10PM3.62m | 7:42AM3.57m | 8:04PM3.98m | 8:33AM3.80m | 8:52PM4.29m | 9:19AM3.95m | 9:37PM4.49m | 10:02AM4.03m | 10:19PM4.55m | |||||||
Low Tide | 11:20AM1.18m | 00:06AM1.13m | 12:46PM1.04m | 1:25AM0.83m | 1:53PM0.78m | 2:27AM0.46m | 2:46PM0.49m | 3:18AM0.13m | 3:32PM0.26m | 4:04AM-0.10m | 4:15PM0.11m | 4:46AM-0.19m | 4:54PM0.07m | ||||||||
 | |  |  | | | |  |  | | | | | | | | | | | | | |
 | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — |
 | — | 8:59 | — | — | 8:57 | — | — | 8:55 | — | — | 8:53 | — | — | 8:52 | — | — | 8:50 | — | — | 8:47 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 17 | 17 | 17 | 18 | 18 | 15 | 17 | 18 | 22 | 24 | 24 | 23 | 27 | 22 | 19 | 21 | 21 | 15 | 17 | 17 |
Feels °C | 13 | 15 | 15 | 17 | 17 | 17 | 12 | 13 | 14 | 20 | 22 | 22 | 19 | 25 | 21 | 20 | 20 | 20 | 11 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 3 | WSW 3 | WSW 7 | WSW 3 | SW 6 | WSW 3 | WSW 4 | WSW 6 | N 3 | SW 6 | SW 6 | SW 6 | WSW 10 | WSW 10 | SW 9 | SW 8 | WSW 7 | WSW 8 | SW 5 | SW 5 | WSW 8 |
| kJ | 1 | 1 | 5 | 1 | 2 | 1 | 2 | 3 | 1 | 2 | 2 | 1 | 10 | 10 | 21 | 17 | 5 | 7 | 6 | 4 | 6 |
Swell 2 Height (m) Direction Period (s) | SW 11 | SW 8 | — | SW 6 | — | SW 6 | SW 6 | SW 5 | SW 7 | — | — | W 12 | — | SW 5 | — | — | WSW 9 | WSW 6 | SW 8 | SW 8 | — |
| kJ | 5 | 3 | — | 7 | — | 1 | 1 | 1 | 2 | — | — | 3 | — | 1 | — | — | 7 | 4 | 3 | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 12 | SW 12 | — | — | — | — | — | — | — | SW 6 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 3 | 6 | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WSW 3 | — | — | — | NNW 3 | NNW 3 | — | ESE 2 | — | — | SE 3 | — | — | — | NNW 3 | NNW 3 | NW 4 | NW 4 | — |
| kJ | — | — | 2 | — | — | — | 1 | 3 | — | 1 | — | — | 3 | — | — | — | 3 | 1 | 6 | 4 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 292 | 297 | 292 | 297 | 346 | 297 | 256 | 307 | 292 | 309 | 322 | 114 | 185 | 136 | 107 | 129 | 277 | 129 | 142 | 554 | 134 |
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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