Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 22 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 10PM (local time) - 7ft (2.2m), 8s period, SW swell with 698 kJ wave energy.
Best Forecast Surf Conditions for Whistling Sands (Porth Oer) this week:
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 2.2m 8s and forecast to arrive on Thursday (Aug 27) at 10PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Aug 25) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Thu 27th Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s in store for the next couple of weeks.
Well, I’ll be straight with you – this is a tough stretch. We’re looking at a long, dry period with very little to get excited about. For the next several days, it’s a whole lot of nothing. From this Saturday right through to the end of the month, we’ve got a run of tiny, weak swells and onshore or cross-onshore winds that are just going to make a mess of things. The first few days are a total write-off, and it stays pretty grim for a solid week.
Then, on Thursday the 27th of August, there’s a sudden flash in the pan. The afternoon shows a 7ft swell from the WSW. The wind goes glassy, which is a rare treat. The combined energy of all swells directed here is strong (412). That’s a proper, clean wave. The swell period is short at 7 seconds though, so it’s going to be a bit crumbly and won’t have that long-distance punch. Also, at 7ft, this is getting into the size that’s best left for the experienced crew. The rest of the week after that drops back into tiny, weak surf.
The following week, around the 2nd and 3rd of September, we see a bigger pulse of energy. The combined energy of all swells directed here hits over 1000, which is very strong. The swell is peaking on the 3rd of September, Thursday morning, with a 8ft swell from the SW. The wind is offshore, which is a major positive. The trade-off? The guidance says it’s hard to paddle into, and the period is 10 seconds, which is decent but not a classic long-period groundswell. At 8ft, this is solid and only for competent surfers. The crowds at Whistling Sands (Porth Oer) can be an issue sometimes, so expect a few locals out for that one.
Honestly, the only standout here is that Thursday the 27th of August. If you’re keen and have the skills, the glassy clean conditions on a 7ft wave is your best bet. The big swell on the 3rd of September is a close second, but it’s a long way off and the forecast confidence is lower. For the rest of us, it’s a lot of flat spells and choppy days.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Mon afternoon, min 13°C on Sat morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 44mm), heaviest during Thu morning. Very mild (max 19°C on Tue night, min 15°C on Tue morning). Winds increasing (calm on Wed afternoon, near gales from the SSE by Thu afternoon). | ||||||||||||||||||||
Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | |||||||||||||||
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) | NNW 5 | NNW 5 | N 4 | SW 14 | NNW 4 | SW 11 | SW 10 | SW 13 | SW 13 | SW 13 | SW 13 | SW 8 | SW 8 | SW 8 | SSW 7 | SSW 7 | SSW 8 | SW 8 | SW 7 | SW 7 | NW 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 20 | 17 | 12 | 8 | 7 | 18 | 14 | 7 | 7 | 7 | 7 | 11 | 16 | 15 | 11 | 32 | 240 | 467 | 126 | 75 | 60 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | off | cross | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross | cross-off | off | cross | on | on |
High Tide | 5:01PM2.65m | 5:49AM2.62m | 6:22PM2.82m | 6:54AM2.80m | 7:16PM3.08m | 7:39AM3.02m | 7:55PM3.37m | 8:14AM3.26m | 8:28PM3.66m | 8:46AM3.48m | 8:59PM3.92m | 9:16AM3.67m | 9:29PM4.12m | ||||||||
Low Tide | 10:58AM1.60m | 00:02AM1.51m | 12:37PM1.49m | 1:19AM1.30m | 1:36PM1.24m | 2:08AM1.03m | 2:17PM0.97m | 2:46AM0.75m | 2:53PM0.72m | 3:20AM0.50m | 3:26PM0.50m | 3:53AM0.30m | 3:59PM0.35m | ||||||||
 |  |  | | | |  | |  |  |  |  | | | |  | |  | | | | |
 | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — |
 | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — |
mm | — | — | — | — | — | — | — | — | — | 3 | 1 | 1 | — | — | 4 | 16 | 12 | 7 | — | — | 1 |
Temp °C | 13 | 14 | 14 | 14 | 15 | 17 | 19 | 21 | 20 | 16 | 18 | 19 | 18 | 19 | 19 | 17 | 16 | 16 | 17 | 17 | 16 |
Feels °C | 10 | 10 | 9 | 12 | 12 | 13 | 16 | 16 | 14 | 12 | 15 | 15 | 15 | 19 | 18 | 16 | 7 | 9 | 14 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | N 5 | SW 13 | N 3 | SW 10 | SE 3 | SW 13 | SW 13 | SW 8 | SW 8 | SW 8 | SW 8 | SSW 7 | SSW 7 | — | SW 8 | SW 7 | SW 7 | SW 6 |
| kJ | 8 | 8 | 8 | 7 | 7 | 2 | 14 | 2 | 7 | 7 | 3 | 11 | 16 | 15 | 11 | 32 | — | 335 | 126 | 75 | 34 |
Swell 2 Height (m) Direction Period (s) | W 6 | SW 12 | SW 12 | SW 14 | W 9 | SW 11 | SW 14 | SW 9 | SW 9 | SW 8 | SW 13 | — | — | SSW 4 | SW 12 | SW 12 | — | — | S 3 | — | SW 7 |
| kJ | 1 | 6 | 6 | 8 | 2 | 18 | 8 | 3 | 3 | 3 | 7 | — | — | 1 | 6 | 6 | — | — | 1 | — | 27 |
Swell 3 Height (m) Direction Period (s) | W 6 | W 5 | W 9 | W 9 | — | SW 13 | — | SW 13 | — | — | N 6 | SW 13 | SW 12 | — | W 12 | W 12 | — | — | — | — | — |
| kJ | 1 | 1 | 2 | 2 | — | 7 | — | 7 | — | — | 1 | 7 | 6 | — | 3 | 3 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | NNW 5 | N 4 | — | NNW 4 | — | SE 3 | ESE 3 | E 3 | E 4 | ENE 3 | ESE 4 | SE 3 | — | SSE 3 | S 4 | SSW 8 | SW 8 | ESE 3 | — | NW 5 |
| kJ | 20 | 17 | 12 | — | 6 | — | 5 | 1 | 5 | 6 | 3 | 20 | 5 | — | 4 | 13 | 240 | 467 | 2 | — | 60 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 148 | 140 | 270 | 140 | 257 | 252 | 113 | 288 | 291 | 178 | 301 | 272 | 218 | 218 | 324 | 179 | 139 | 4 | 4 | 15 | 377 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Whistling Sands (Porth Oer) Surf forecast
The above surf forecast table for Whistling Sands (Porth Oer) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Whistling Sands (Porth Oer) can be found by selecting the local surf guide option on the grey menu. Our Whistling Sands (Porth Oer) 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 (Whistling Sands (Porth Oer)) 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 Whistling Sands (Porth Oer) 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 Whistling Sands (Porth Oer), camping, hotels and holiday cottages in Lleyn Peninsula, consider staying in Porthmadog which is 41 km (25 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, Bangor and Aberystwyth.
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