Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 19 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 7PM (local time) - 3.5ft (1.1m), 6s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 26 Aug, 1AM (local time) - 5ft (1.6m), 8s period, SW swell with 367 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 7PM (local time) - 3.5ft (1.1m), 6s period with SW 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 Tuesday (Aug 25) at 7PM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.1m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 1.6m 8s and forecast to arrive on Wednesday (Aug 26) at 1AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 5s period and expected on Wednesday (Aug 26) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7PM (Tue 25th Aug) | 3.5ft (1.1m) 6s |
| Best Surf | 7PM (Tue 25th Aug) | 3.5ft (1.1m) 6s |
| Most Powerful | 1AM (Wed 26th Aug) | 5ft (1.6m) 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 Whistling Sands (Porth Oer) has got cooking for us over the next couple of weeks. I gotta be straight with you – it’s a bit of a quiet stretch for this little sheltered cove. We’ve got a long gap with nothing really worth paddling out for.
We kick off on Wednesday the 19th of August, but honestly, don’t bother. Tiny 2ft to 3ft waves from the WSW and SW with a super short period of just 4 seconds – that’s all wind chop. The energy is weak (26 to 34). The wind is either a cross-on or cross-off, but it’s a moderate to fresh breeze, so it’s just messy. Thursday the 20th and Friday the 21st are more of the same – some swell bumping up to 4ft on Thursday, but the energy is still weak to moderate (103 to 130), and with 22 mph winds from the north, it’s a lumpy, cross-onshore mess. No thanks.
We then slide into a flat spell. From Saturday the 22nd all the way through to Tuesday the 25th, the swell drops to a pathetic 0.3ft. The energy is almost non-existent (single digits to low teens). You’d be floating on a lake. The wind does go offshore or cross-off a few times, keeping the water clean, but there’s nothing to ride. That’s a solid 4 days of nothing.
Now, the only glimmer of hope – and I mean the one stand-out in this whole forecast – comes on Wednesday the 26th of August. We get a pulse of S swell pushing 5ft. The period is still a bit short at 8 seconds, but the energy jumps way up to a strong 417. More importantly, we get a moderate offshore wind from the SE. That’ll clean the faces right up. For a break that’s usually sheltered, this is the one window where it might actually offer a few decent, clean little waves. It’s still not pumping, but if you’re desperate, that Wednesday morning is your best bet. Keep in mind, Whistling Sands is inconsistent, so this is a bit of a rare treat.
After that, it’s back to poor conditions. Thursday the 27th drops off, and the rest of the week sees small, weak swell and more onshore or cross-off winds. The end of August and start of September shows a bit more size – up to 7ft on Sunday the 30th and 7ft on Monday the 31st – but the wind is howling onshore or cross-on, making it a complete washout. That’s more of a kite-surfing setup than a paddle-surfing one.
Overall, it’s a lean couple of weeks. The only day that has a pulse and clean wind is the morning of Wednesday the 26th. Don’t hold your breath for the rest.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Tue night. Very mild (max 17°C on Wed night, min 13°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Mon afternoon, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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) | WSW 4 | SW 4 | WSW 6 | NNW 5 | N 5 | N 5 | NNW 5 | NW 4 | NNW 4 | NNW 5 | NNW 4 | SW 15 | N 5 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 16 | 23 | 115 | 59 | 99 | 42 | 26 | 13 | 31 | 28 | 24 | 8 | 8 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 367 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | on | cross-off | off | off | off |
High Tide | 1:22PM3.21m | 1:46AM3.14m | 2:11PM2.93m | 2:45AM2.80m | 3:22PM2.70m | 4:14AM2.59m | 5:01PM2.65m | 5:49AM2.62m | 6:22PM2.82m | 6:54AM2.80m | 7:16PM3.08m | 7:39AM3.02m | 7:55PM3.37m | ||||||||
Low Tide | 7:48AM0.95m | 7:59PM1.07m | 8:27AM1.25m | 8:50PM1.34m | 9:23AM1.49m | 10:11PM1.52m | 10:58AM1.60m | 00:02AM1.51m | 12:37PM1.49m | 1:19AM1.30m | 1:36PM1.24m | 2:08AM1.03m | 2:17PM0.97m | 2:46AM0.75m | |||||||
 | |  | |  |  |  | |  |  | | | | | | | |  | | | | |
 | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:16 | — | — |
 | — | 8:37 | — | — | 8:35 | — | — | 8:32 | — | — | 8:30 | — | — | 8:29 | — | — | 8:27 | — | — | 8:23 | — |
mm | 1 | 1 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 17 | 15 | 15 | 14 | 13 | 14 | 14 | 13 | 14 | 14 | 14 | 16 | 16 | 16 | 19 | 18 | 16 | 17 | 16 |
Feels °C | 11 | 11 | 14 | 10 | 8 | 9 | 9 | 10 | 9 | 9 | 10 | 10 | 11 | 12 | 12 | 14 | 15 | 15 | 14 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 16 | NW 4 | SW 16 | SW 7 | SW 7 | SW 6 | SW 6 | NNW 5 | SW 13 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 8 |
| kJ | 10 | 2 | 10 | 36 | 23 | 10 | 5 | 14 | 7 | 8 | 8 | 8 | 8 | 7 | 8 | 8 | 7 | 7 | 7 | 7 | 367 |
Swell 2 Height (m) Direction Period (s) | — | SW 15 | — | SW 15 | SW 14 | SW 14 | SW 13 | SW 6 | SW 6 | W 6 | SW 12 | SW 12 | SW 14 | W 9 | — | — | — | — | SW 13 | — | — |
| kJ | — | 9 | — | 8 | 8 | 8 | 7 | 1 | 1 | 1 | 6 | 6 | 8 | 2 | — | — | — | — | 7 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 14 | — | SW 13 | SW 16 | W 10 | W 10 | W 9 | — | — | W 8 | — | — | W 8 | — | — | — |
| kJ | — | — | — | — | — | 8 | — | 7 | 10 | 2 | 2 | 2 | — | — | 1 | — | — | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | SW 4 | WSW 6 | NNW 5 | N 5 | N 5 | NNW 5 | NW 4 | NNW 4 | NNW 5 | NNW 4 | N 3 | N 5 | NNW 4 | — | — | — | WSW 3 | S 3 | SW 5 | SSE 4 |
| kJ | 16 | 23 | 115 | 59 | 99 | 42 | 26 | 13 | 31 | 28 | 24 | 5 | 7 | 3 | — | — | — | 1 | 5 | 23 | 50 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 288 | 288 | 125 | 130 | 145 | 132 | 132 | 132 | 297 | 140 | 140 | 178 | 218 | 308 | 257 | 288 | 288 | 288 | 134 | 106 | 41 |
Best forecast wave conditions in Lleyn Peninsula | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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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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