Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 23 Aug 2026:
- Best quality surf: Thursday 27 Aug, 1PM (local time) - 3.5ft (1.1m), 8s period, SSW swell with cross-offshore winds.
- Most powerful swell: Sunday 30 Aug, 10AM (local time) - 6.5ft (2.0m), 6s period, W swell with 265 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 1PM (local time) - 3.5ft (1.1m), 8s period with SSW swell.
Best Forecast Surf Conditions for Whistling Sands (Porth Oer) this week:
The surf forecast for Whistling Sands (Porth Oer) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 1PM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.1m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 2.0m 6s and forecast to arrive on Sunday (Aug 30) at 10AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Aug 25) at 10PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Thu 27th Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 1PM (Thu 27th Aug) | 3.5ft (1.1m) 8s |
| Most Powerful | 10AM (Sun 30th Aug) | 6.5ft (2.0m) 6s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright, Rusty here, and this stretch of coast is having a tough time. There’s a long, quiet run ahead before we get anything with a pulse.
For the first week, from now through the 26th, it’s flat. Swell heights are barely 1 foot, and the combined energy readings are down in the weak range – single digits and low teens. The best of it is Monday morning the 24th, with an offshore breeze making it clean, but there's absolutely no swell to ride. You’re basically looking at a pond.
The first proper chance comes on Thursday the 27th afternoon. We finally see the swell push to 4ft from the SSW, with moderate energy (150). There's a light, clean cross-off wind, so the surface will be tidy. It’s a short-period swell though, around 8 seconds, so the waves will be fat and a bit soft. It’s surfable, but just barely.
We get a glass-off on the morning of the 28th, but with the swell dropping back to around 2ft, it’s a longboard morning before it fades.
Heading into September, the swell tries to show up but gets ruined by the wind. On Friday the 4th, we get a solid 6ft from the SW with a big energy jump to 553, but it’s short period and cross-shore wind makes it lumpy. Then Saturday the 5th and Sunday the 6th have strong SW winds that will rip the face apart. Whistling Sands is an inconsistent, sheltered spot to begin with, so it needs everything to line up.
The biggest swell of the window hits on Monday the 7th of September – 10ft from the SW with extreme energy (1318) – but a near-gale cross-onshore wind will turn it into a total whiteout. That’s a kite-surfing day, if anything. No quality paddle waves there.
Overall, there’s nothing to get excited about. The best we get is a so-so Thursday afternoon with 4ft fat swell. The water temp here is 62°F, right where it should be. It’s one of those stretches where the ocean is taking a nap, and we just have to wait it out.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue night. Warm (max 25°C on Tue afternoon, min 13°C on Sun morning). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Fri night. Very mild (max 19°C on Wed afternoon, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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 | N 4 | SW 11 | SW 10 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 8 | SW 8 | SSW 4 | SSW 7 | SSW 7 | SSW 8 | SW 8 | SW 7 | SW 7 | SW 7 | SW 7 | SW 5 | WSW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 7 | 18 | 14 | 7 | 7 | 7 | 7 | 7 | 10 | 6 | 6 | 29 | 150 | 129 | 53 | 41 | 54 | 34 | 56 | 239 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | off | cross-on | cross-off | cross-off | cross-on | cross-off | off | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross-on | cross-off | cross | cross |
High Tide | 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 | 9:47AM3.83m | 10:01PM4.26m | ||||||||
Low Tide | 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 | 4:26AM0.17m | 4:32PM0.27m | ||||||||
 | |  | |  |  | |  |  | | | |  | | | | | |  | | | |
 | 6:11 | — | — | 6:13 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — |
 | — | 8:29 | — | — | 8:27 | — | — | 8:23 | — | — | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | 1 | 1 | — | — | — | — | 3 | 2 | 5 | 6 |
Temp °C | 14 | 15 | 16 | 18 | 20 | 20 | 18 | 25 | 19 | 18 | 19 | 19 | 17 | 17 | 17 | 17 | 17 | 18 | 16 | 16 | 16 |
Feels °C | 12 | 12 | 12 | 16 | 15 | 14 | 16 | 21 | 17 | 16 | 19 | 19 | 16 | 16 | 17 | 15 | 15 | 16 | 12 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | N 4 | SW 13 | N 3 | SW 10 | — | SW 13 | SW 13 | ESE 3 | NE 4 | SW 8 | SSW 4 | SSW 7 | SSW 7 | — | SW 8 | SW 7 | SW 7 | SW 7 | SW 7 | NW 4 | — |
| kJ | 3 | 7 | 2 | 14 | — | 7 | 7 | 1 | 4 | 10 | 5 | 5 | 29 | — | 129 | 53 | 41 | 54 | 34 | 2 | — |
Swell 2 Height (m) Direction Period (s) | SW 14 | W 9 | SW 11 | SW 14 | SW 9 | SW 9 | SW 8 | SW 8 | SSW 8 | SW 12 | SSW 8 | — | SW 9 | — | — | — | W 12 | WSW 11 | — | — | — |
| kJ | 8 | 2 | 18 | 8 | 3 | 3 | 3 | 3 | 7 | 6 | 6 | — | 12 | — | — | — | 3 | 23 | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 9 | — | SW 14 | — | SW 13 | — | — | SW 13 | SW 13 | — | SW 12 | SW 12 | SW 12 | — | — | — | — | — | — | — | — |
| kJ | 2 | — | 8 | — | 7 | — | — | 7 | 7 | — | 6 | 6 | 6 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | N 4 | — | SE 3 | — | E 4 | E 3 | NNE 2 | ESE 4 | SSE 4 | — | S 4 | SE 3 | SSW 8 | — | — | — | — | W 4 | SW 5 | WSW 6 |
| kJ | — | 5 | — | 3 | — | 12 | 5 | 1 | 16 | 11 | — | 3 | 3 | 150 | — | — | — | — | 10 | 56 | 239 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 134 | 252 | 113 | 288 | 291 | 291 | 257 | 295 | 275 | 258 | 134 | 282 | 251 | 15 | 4 | 88 | 229 | 15 | 314 | 301 | 299 |
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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