Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 8 Sep 2026:
- Most powerful swell: Saturday 12 Sep, 10PM (local time) - 7ft (2.1m), 7s period, SW swell with 363 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 2.1m 7s and forecast to arrive on Saturday (Sep 12) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Thursday (Sep 10) at 4PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Sat 12th Sep) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Right, folks, Rusty here. Let's have a look at what’s on offer for the next couple of weeks.
Honestly, it’s a grim picture for Whistling Sands (Porth Oer). We’ve got a solid 16-day window, but there is absolutely nothing worth paddling out for. The whole period is a write-off. From Tuesday the 8th of September right through to Wednesday the 23rd of September, every single session is flagged as poor surf conditions. That’s a full two weeks of no-go.
The swell just isn't there. What little energy shows up is weak, with the combined energy readings mostly in the low double digits or single digits. You’ll see a brief lift on Wednesday the 9th with a combined swell energy of 186, but that’s a 4ft swell from the NNW with a nasty onshore wind, making it a total mess. The rest of the time we’re looking at tiny dribbles, with the odd period where there is literally no wave height recorded.
The wind is all over the shop, mostly onshore or cross-onshore, and often strong. It’s fresh breezes or strong breezes for much of it, which will chop up anything that might try to form. There are a few clean patches when the wind goes cross-off, like on Thursday the 10th, but that’s with a tiny 0.7ft swell – you’d be floating.
We do get a couple of long-period swells right at the very end, from the 20th of September onwards, with 13 and 14-second intervals. But don’t get excited. They’re tiny – only 0.3ft – and the wind is either howling or straight onshore. That kind of long-period groundswell would be best for a point or reef, but with zero size, it’s not even a whisper.
Whistling Sands is a sheltered, inconsistent beginner spot as it is, so a blank run like this is pretty normal for the area. It’s not going to stay poor forever, but this forecast window is a total bust. No standouts, no silver linings. Save the petrol.
Rusty
Short Range ForecastLight rain (total 8mm), mostly falling on Thu afternoon. Very mild (max 16°C on Mon night, min 13°C on Mon night). Winds decreasing (strong winds from the SW on Mon night, light winds from the W by Wed morning). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Sat afternoon. Very mild (max 17°C on Sat night, min 13°C on Fri morning). Winds decreasing (strong winds from the SSW on Sat morning, light winds from the WSW by Sun morning). | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 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) | W 5 | W 5 | NNW 6 | NNW 6 | SW 8 | SW 8 | WSW 7 | SW 6 | SW 7 | SW 8 | SW 8 | SW 8 | SW 7 | SW 6 | SW 7 | SW 7 | SW 7 | SW 6 | SW 6 | SW 4 | SW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 93 | 88 | 183 | 82 | 30 | 14 | 5 | 0 | 189 | 97 | 64 | 36 | 54 | 0 | 289 | 105 | 55 | 25 | 0 | 20 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross | cross-off | cross-off | cross-off | cross-on | on | on | cross-off | cross-off | cross-off | cross-on | cross-on | cross-off | cross-off | cross | cross-off | cross-off |
High Tide | 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 | 10:51AM4.02m | 11:09PM4.13m | |||||||
Low Tide | 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 | 5:27AM0.15m | 5:36PM0.29m | ||||||||
 | |  | |  | | |  |  | | |  | | | | | | | | | | |
 | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:50 | — | — |
 | — | 7:52 | — | — | 7:50 | — | — | 7:46 | — | — | 7:45 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — |
mm | — | — | — | — | — | — | — | 5 | 2 | — | — | — | — | 2 | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 15 | 13 | 14 | 15 | 16 | 15 | 16 | 14 | 15 | 14 | 15 | 16 | 17 | 17 | 16 | 18 | 17 | 17 | 17 |
Feels °C | 7 | 8 | 7 | 8 | 11 | 11 | 9 | 7 | 12 | 9 | 11 | 11 | 7 | 10 | 14 | 17 | 14 | 17 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 11 | WSW 10 | SW 6 | SW 8 | NNW 5 | SW 8 | WSW 7 | — | SW 7 | SW 8 | SW 8 | SW 8 | — | — | — | SW 7 | SW 7 | SW 6 | — | SW 12 | — |
| kJ | 22 | 9 | 26 | 39 | 21 | 14 | 5 | — | 189 | 97 | 64 | 36 | — | — | — | 105 | 55 | 25 | — | 6 | — |
Swell 2 Height (m) Direction Period (s) | — | — | SW 10 | SW 8 | SW 8 | NNW 4 | — | — | — | — | — | NNW 4 | — | — | — | — | W 13 | — | — | W 12 | — |
| kJ | — | — | 4 | 65 | 30 | 2 | — | — | — | — | — | 1 | — | — | — | — | 3 | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | W 5 | NNW 6 | NNW 6 | WSW 3 | SW 4 | SW 5 | SW 6 | — | NNW 5 | NNW 4 | — | SW 7 | SW 6 | SW 7 | — | — | — | SW 6 | SW 4 | SW 4 |
| kJ | 93 | 88 | 183 | 82 | 1 | 6 | 41 | 169 | — | 44 | 12 | — | 54 | 148 | 289 | — | — | — | 27 | 20 | 24 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 130 | 499 | 299 | 130 | 15 | 191 | 296 | 288 | 15 | 145 | 129 | 132 | 191 | 270 | 15 | 10 | 15 | 139 | 256 | 270 | 139 |
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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