Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 27 Jul 2026:
- Most powerful swell: Thursday 30 Jul, 7PM (local time) - 3.5ft (1.1m), 5s period, SW swell with 51 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 Thursday (Jul 30) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Tuesday (Jul 28) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Thu 30th Jul) | 3.5ft (1.1m) 5s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the cards for Whistling Sands (Porth Oer).
To be honest, it's a flat spell for a long stretch. The whole 16-day window is a bit of a write-off, with nothing on offer that's worth paddling out for. The waves are just too weak and the conditions are all over the place. It's one of those periods where the forecast is stubbornly poor, and there's no real standout to get excited about.
From the 27th of July right through to the 11th of August, every single session is marked as poor. The swell is tiny, barely getting above 3ft, and the period is short, mostly under 8 seconds, so there's no real push. The energy is weak, with values like 20 (22) and 48 (48), nothing to write home about. The wind is a problem too, often cross-shore or onshore, making it choppy and messy. There are a few moments with lighter winds, like on the 2nd of August where we see a light offshore breeze, but the swell is almost non-existent at 0.3ft, so it's a no-go.
The water is about average for the time of year, nothing unusual there. For a sheltered spot like this, it's not a surprise that a long run of poor conditions can happen. It just takes a good swell to line up with the right wind, and that's just not happening here.
So, I'd say leave the board in the car and find something else to do. The setup is not going to deliver for a surfer, especially with the onshore winds and small waves. It might be more interesting for a kite surfer if the wind picks up, but for a paddle, it's a hard pass.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Very mild (max 19°C on Mon night, min 14°C on Mon morning). Winds decreasing (fresh winds from the SSW on Tue morning, light winds from the NW by Wed night). | Days 4-6 Weather SummarySome drizzle, heaviest during Thu morning. Very mild (max 18°C on Thu night, min 13°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||
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 | SW 6 | SW 5 | SW 5 | SW 5 | SW 5 | SW 4 | SW 5 | SW 5 | SW 5 | SW 5 | SW 6 | SW 6 | WSW 5 | SW 5 | WSW 5 | N 3 | W 8 | N 4 | NNE 3 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 18 | 43 | 0 | 46 | 23 | 5 | 4 | 43 | 27 | 22 | 24 | 27 | 15 | 2 | 6 | 2 | 1 | 1 | 14 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | on | cross-on | cross-off | on | on | cross | on | cross-on | cross-off | cross-off | cross-off | on | cross-off |
High Tide | 8:12PM3.37m | 8:32AM3.26m | 8:49PM3.59m | 9:07AM3.41m | 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 | ||||||||
Low Tide | 2:42PM0.97m | 3:09AM0.80m | 3:19PM0.77m | 3:46AM0.61m | 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 | ||||||||
 |  |  | |  |  | | |  |  | | | | | | | | | | | | |
 | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — |
 | — | — | 9:21 | — | — | 9:19 | — | — | 9:17 | — | — | 9:15 | — | — | 9:14 | — | — | 9:13 | — | — | 9:10 |
mm | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 18 | 19 | 18 | 18 | 17 | 17 | 18 | 17 | 15 | 17 | 18 | 13 | 16 | 18 | 14 | 15 | 16 | 16 | 18 | 19 |
Feels °C | 11 | 15 | 18 | 15 | 15 | 15 | 15 | 15 | 14 | 15 | 13 | 13 | 9 | 11 | 13 | 11 | 11 | 12 | 16 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | NNW 5 | NNW 4 | — | — | — | SW 5 | SW 5 | — | — | SW 5 | NW 4 | SW 5 | SW 6 | SW 6 | WSW 5 | SW 5 | WSW 5 | — | W 8 | W 7 | SW 8 |
| kJ | 15 | 4 | — | — | — | 23 | 5 | — | — | 27 | 4 | 24 | 27 | 15 | 2 | 6 | 2 | — | 1 | 1 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 3 | N 4 | — | — | W 8 | — | — | W 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 | — | — | 1 | — | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | SW 4 | SW 6 | SW 5 | SW 5 | — | — | SW 4 | SW 5 | NW 3 | SW 5 | NW 3 | NW 4 | — | — | — | NW 3 | N 3 | — | N 4 | NNE 3 |
| kJ | 17 | 18 | 43 | 60 | 46 | — | — | 4 | 43 | 3 | 22 | 2 | 3 | — | — | — | 2 | 1 | — | 14 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 316 | 292 | 282 | 233 | 258 | 268 | 257 | 297 | 350 | 137 | 292 | 537 | 37 | 145 | 537 | 323 | 326 | 883 | 288 | 291 | 324 |
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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