Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 30 Aug 2026:
- Most powerful swell: Wednesday 2 Sep, 10PM (local time) - 7.5ft (2.3m), 7s period, SW swell with 480 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 2.3m 7s and forecast to arrive on Wednesday (Sep 02) 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 1.9m 6s period and expected on Wednesday (Sep 02) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Wed 2nd Sep) | 7.5ft (2.3m) 7s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright, let's get real about Whistling Sands. I've been staring at this forecast for the last half hour, and honestly, it’s a tough one to call. The whole 16-day window looks pretty bleak, with next to nothing worth getting excited about. There’s a big gap of nothing from now until the morning of Thursday, 10th September, so don't hold your breath.
The water is a touch warmer than normal for the time of year at 63°, which is nice if you’re just going for a dip, but the surf is dead.
The only faint glimmer of hope I can see is on Thursday, 10th September. The morning shows a moderate offshore wind from the ESE and some solid swell pushing in. We’re looking at 6 ft of SSW swell with a combined energy of 288. That’s a moderate energy, and the offshore wind should keep the lines reasonably clean. The crowd factor here says "sometimes," so you might have it to yourself if you’re lucky. It’s not a standout by any stretch, but it’s the only thing on the menu that isn't total garbage. The afternoon gets a bit bigger at 7 ft with the same energy at 350, but the wind swings cross-off, so the morning session is your best bet. This is a sheltered spot, so it takes a bit to get it going.
Everything else is a write-off. On Sunday, the 30th of August, we’ve got risk of thunderstorms and a strong cross-off wind with a tiny 3 ft swell. Then it’s just messy onshore winds, tiny waves, and a whole lot of "poor surf conditions" from the data. The swell that pops up on the 2nd of September hits 6 ft and 6 ft, but it’s accompanied by strong, messy cross-shore winds that will chop it to bits.
After that 10th of September window, it drops off a cliff again. The swell disappears, and the wind goes back onshore. It’s a classic case of a sheltered beach that needs a perfect storm to fire, and we aren't getting it.
Rusty.
Short Range ForecastModerate rain (total 14mm), heaviest on Sun afternoon. Very mild (max 17°C on Sun afternoon, min 15°C on Sun night). Winds increasing (light winds from the WSW on Mon afternoon, strong winds from the SSW by Wed morning). | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Thu night. Very mild (max 18°C on Thu night, min 13°C on Fri night). Winds decreasing (near gales from the SW on Thu night, moderate winds from the WNW by Sat morning). | |||||||||||||||||||
Sun 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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 5 | SW 8 | SW 8 | SW 9 | SW 8 | SW 4 | SW 5 | SW 5 | SW 6 | SW 6 | SW 7 | SW 7 | SW 6 | SW 6 | WSW 7 | WSW 5 | NW 5 | NW 6 | SW 6 | SW 4 |
Wave Graph  | ||||||||||||||||||||
 kJ | 0 | 157 | 153 | 129 | 36 | 27 | 55 | 63 | 278 | 271 | 410 | 194 | 136 | 263 | 329 | 133 | 80 | 59 | 18 | 11 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | on | on | cross-on | cross | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross-on | on | on | cross | cross |
High Tide | 10:34PM4.30m | 10:52AM3.97m | 11:09PM4.25m | 11:28AM3.91m | 11:47PM4.09m | 12:08PM3.76m | 00:30AM3.83m | 12:53PM3.53m | 1:20AM3.49m | 1:48PM3.26m | 2:25AM3.15m | 3:02PM3.03m | 3:52AM2.93m | |||||||
Low Tide | 5:04PM0.26m | 5:32AM0.17m | 5:38PM0.34m | 6:05AM0.31m | 6:13PM0.48m | 6:41AM0.53m | 6:51PM0.67m | 7:22AM0.79m | 7:39PM0.91m | 8:16AM1.08m | 8:50PM1.14m | 9:38AM1.30m | 10:31PM1.24m | |||||||
 |  |  | |  |  | |  |  |  |  | |  | | | |  | | | | |
 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — |
 | 8:13 | — | — | 8:10 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — | — | 8:00 | — | — | 7:59 | — |
mm | 5 | 3 | — | — | — | — | — | 4 | 2 | — | — | — | 1 | 5 | — | 1 | — | — | — | — |
Temp °C | 17 | 16 | 15 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 16 | 17 | 18 | 15 | 18 | 15 | 13 | 15 | 17 |
Feels °C | 13 | 14 | 9 | 13 | 13 | 12 | 11 | 12 | 12 | 12 | 13 | 12 | 13 | 10 | 8 | 12 | 8 | 8 | 11 | 14 |
Swell 1 Height (m) Direction Period (s) | — | SW 8 | SW 8 | SW 9 | SW 8 | WNW 4 | — | W 16 | — | — | — | SW 15 | — | — | SW 14 | — | SW 6 | WSW 6 | NNW 5 | NNW 5 |
| kJ | — | 157 | 153 | 129 | 36 | 1 | — | 5 | — | — | — | 8 | — | — | 8 | — | 68 | 20 | 24 | 2 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | NNW 4 | — | W 18 | — | — | — | — | — | — | — | — | — | SW 14 | SW 7 | SW 6 | SW 13 |
| kJ | — | — | — | — | 7 | — | 6 | — | — | — | — | — | — | — | — | — | 8 | 16 | 18 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 13 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 7 | — |
Wind waves Height (m) Direction Period (s) | SW 5 | — | NW 5 | NW 5 | WSW 3 | SW 4 | SW 5 | SW 5 | SW 6 | SW 6 | SW 7 | SW 7 | SW 6 | SW 6 | WSW 7 | WSW 5 | NW 5 | NW 6 | — | SW 4 |
| kJ | 98 | — | 86 | 42 | 2 | 27 | 55 | 63 | 278 | 271 | 410 | 194 | 136 | 263 | 329 | 133 | 80 | 59 | — | 11 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 298 | 15 | 499 | 125 | 15 | 241 | 297 | 233 | 298 | 329 | 250 | 359 | 256 | 137 | 499 | 467 | 297 | 189 | 130 | 132 |
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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