Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 29 Jul 2026:
- Most powerful swell: Wednesday 29 Jul, 10PM (local time) - 3.5ft (1.1m), 5s period, SW swell with 66 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 1.1m 5s and forecast to arrive on Wednesday (Jul 29) 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 0.5m 3s period and expected on Wednesday (Aug 05) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Wed 29th Jul) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Right, let’s have it in proper language for those still working in feet and miles.
Here’s the deal, folks. It's gonna be a long flat patch. Don’t bother with your wetsuit for a good week and a half. Nothing doing until we get into early August.
Things only start looking up on Friday the 7th of August. Overnight we get a chunky 8ft southwest swell that shows up at Whistling Sands (Porth Oer). The energy (724) is pumping, but it comes with a cross-onshore breeze that messes it up a bit. By the afternoon, it drops back to 6ft from the same direction, wind gets lighter, but it’s still a bit lumpy. That’s expert territory at its peak, so leave your foamie at home.
Saturday the 8th of August cleans right up with light offshore wind. Swell drops to a more friendly 4ft from the SW. Energy (196) is moderate but the surface is clean and the waves are ridable – not epic, but decent enough to scratch an itch. Water temp sits at about 60°F, right on par for the season.
Sunday the 9th sees things fade to 3ft from the west-southwest, still clean, but dying out fast. By the afternoon it’s pretty much gone again.
So for the real standout – Saturday morning the 8th of August. Clean conditions, light offshore wind, southwest swell in the chest to head-high range. It’s not pumping like winter, but it’s the best we’ve got. Get out there if you can.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri night. Very mild (max 18°C on Wed afternoon, min 13°C on Fri night). Winds decreasing (fresh winds from the SW on Wed afternoon, calm by Thu night). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Mon night. Very mild (max 16°C on Sun afternoon, min 13°C on Sat morning). Mainly fresh winds. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 4 | SW 4 | SW 5 | SW 5 | SW 5 | SW 4 | SW 5 | SW 5 | SW 4 | SW 5 | WSW 5 | SW 9 | SW 4 | N 4 | NNE 4 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 36 | 13 | 6 | 9 | 5 | 6 | 16 | 7 | 3 | 3 | 3 | 19 | 11 | 11 | 11 | 18 | 17 | 9 | 8 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | on | on | cross-on | cross-on | cross | on | on | cross-off | cross-off | glassy | cross-on | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-off |
High Tide | 9:24PM3.79m | 9:40AM3.52m | 9:56PM3.95m | 10:12AM3.60m | 10:28PM4.05m | 10:45AM3.65m | 11:01PM4.09m | 11:19AM3.67m | 11:35PM4.06m | 11:55AM3.63m | 00:13AM3.95m | 12:35PM3.54m | 00:55AM3.78m | ||||||||
Low Tide | 3:53PM0.60m | 4:21AM0.46m | 4:26PM0.49m | 4:56AM0.36m | 5:00PM0.43m | 5:30AM0.33m | 5:33PM0.45m | 6:04AM0.36m | 6:06PM0.52m | 6:38AM0.44m | 6:40PM0.64m | 7:14AM0.58m | 7:17PM0.80m | ||||||||
 |  |  |  | |  | | |  | | |  | | | | | |  |  |  | | |
 | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — |
 | — | — | 9:17 | — | — | 9:15 | — | — | 9:14 | — | — | 9:13 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 8 | 6 | 3 | 7 |
Temp °C | 17 | 18 | 17 | 14 | 15 | 16 | 14 | 16 | 18 | 13 | 15 | 15 | 15 | 16 | 16 | 15 | 16 | 16 | 14 | 14 | 13 |
Feels °C | 14 | 14 | 16 | 11 | 14 | 15 | 11 | 11 | 14 | 10 | 13 | 13 | 15 | 12 | 13 | 12 | 14 | 13 | 10 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | — | — | SW 5 | SW 5 | SW 5 | SW 4 | SW 5 | NW 3 | SW 4 | SW 5 | NW 3 | SW 9 | SW 4 | SW 8 | WSW 8 | NNW 4 | SW 8 | SW 8 | SW 8 | SW 8 | SW 7 |
| kJ | — | — | 36 | 13 | 6 | 9 | 5 | 2 | 16 | 7 | 3 | 3 | 3 | 3 | 7 | 6 | 11 | 18 | 17 | 9 | 8 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | NNW 4 | — | — | — | W 12 | W 10 | WSW 5 | — | SW 8 | SW 4 | SW 10 | SW 8 | NNW 4 | — | — | — | N 3 |
| kJ | — | — | — | — | 3 | — | — | — | 3 | 2 | 2 | — | 3 | 1 | 4 | 11 | 3 | — | — | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SW 9 | — | — | — | W 10 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 4 | — | NW 4 | — | NW 3 | NW 4 | SW 5 | NW 2 | NW 4 | — | WSW 3 | — | N 4 | NNE 4 | ESE 3 | ENE 2 | — | ESE 3 | NNW 3 | — |
| kJ | 21 | 21 | — | 6 | — | 3 | 5 | 6 | 1 | 6 | — | 1 | — | 19 | 11 | 3 | 1 | — | 1 | 1 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 288 | 288 | 288 | 499 | 537 | 288 | 307 | 537 | 308 | 297 | 318 | 257 | 298 | 308 | 297 | 134 | 257 | 134 | 297 | 279 | 324 |
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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