Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 28 Aug 2026:
- Best quality surf: Friday 4 Sep, 4PM (local time) - 5ft (1.6m), 7s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 3 Sep, 1PM (local time) - 8ft (2.4m), 7s period, SW swell with 590 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 4PM (local time) - 5ft (1.6m), 7s 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 Friday (Sep 04) at 4PM. The primary swell is predicted to be 1.6m and 7s period with a secondary swell of 0.1m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 2.4m 7s and forecast to arrive on Thursday (Sep 03) at 1PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Friday (Sep 04) at 10AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Fri 4th Sep) | 5ft (1.6m) 7s |
| Best Surf | 4PM (Fri 4th Sep) | 5ft (1.6m) 7s |
| Most Powerful | 1PM (Thu 3rd Sep) | 8ft (2.4m) 7s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright, Rusty here. Let's talk about what's on the table for Whistling Sands.
Honestly, looking at the whole 16-day run, it's a tough one. We’ve got a long stretch of flat and messy conditions ahead. The first real surfable swell doesn't show up until Monday the 31st of August, and even then, it's pretty ordinary. There's a short window on Thursday the 3rd of September where things get a bit more interesting, but it comes with some heavy wind. For a spot that’s already inconsistent, this is a quiet period.
Kicking things off at Whistling Sands (Porth Oer). This is a sheltered, beginner-friendly spot, and the water temp is sitting at 63°, which is a touch warmer than what we’d usually expect for this time of year. For the first few days, from the 28th of August right through to the 30th, it’s just small, weak junk. Expect knee-to-waist high at best, with onshore and cross-off winds making a mess of things. The energy is low, sitting at just 24 on the Friday.
Monday the 31st of August sees a bit more size, with the swell pushing to 4ft from the SW (combined energy of 224). But it’s coming with a WNW wind that’s blowing straight onshore, and the period is a short 9 seconds, so it’s going to be lumpy and hard to line up. Not a classic day.
The standout, if you can call it that, looks to be Thursday the 3rd of September. You get a bump in swell to 7ft from the SW (combined energy of 507) on the morning session. That’s a solid size, but it’s right on the edge for a beginner spot, good for experienced surfers. The wind is a cross-off, which will keep the face reasonably clean, and the period is a weak 7 seconds, so it’ll be a bit walled up. The afternoon, however, gets absolutely hammered by a 28 mph cross-shore wind that’ll turn it into a washing machine.
After that, it drops back to nothing. Friday the 4th has a tiny 5ft pulse but with light wind, and then we’re into days of flatness with only ankle-snappers through to the 12th of September. The swell direction swings around to the NW and NNW, but the heights are mostly below 2ft with barely any energy.
Bottom line: If you’re desperate for a paddle, the morning of September 3rd is your best bet for some punchy, head-high waves, but get there early before the wind ruins it. The rest of the fortnight is a write-off.
Rusty.
Short Range ForecastHeavy rain (total 26mm), heaviest during Sat morning. Very mild (max 17°C on Fri afternoon, min 15°C on Sun night). Winds increasing (light winds from the NW on Fri morning, fresh winds from the S by Sun afternoon). | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Wed morning. Very mild (max 19°C on Wed night, min 15°C on Mon morning). Winds increasing (light winds from the SSW on Tue afternoon, strong winds from the SSW by Wed morning). | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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) | SSW 6 | SW 6 | SW 11 | SSW 6 | SW 6 | SW 9 | SW 8 | SW 8 | SW 8 | SW 9 | SW 8 | SW 6 | SW 6 | SW 6 | SW 6 | SW 16 | SW 6 | SW 7 | SW 7 | SW 7 | SW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 16 | 19 | 5 | 58 | 18 | 212 | 69 | 23 | 131 | 189 | 109 | 47 | 38 | 21 | 12 | 10 | 0 | 135 | 411 | 507 | 179 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | cross | cross-off | cross | cross-on | cross-off | cross-off | cross | on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross | cross-on | cross-off | cross | cross |
High Tide | 9:29PM4.12m | 9:47AM3.83m | 10:01PM4.26m | 10:18AM3.93m | 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 | ||||||||
Low Tide | 3:59PM0.35m | 4:26AM0.17m | 4:32PM0.27m | 4:59AM0.12m | 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 | ||||||||
 |  |  |  |  | | | |  | |  |  | | | | | |  | |  | | |
 | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:31 | — | — |
 | — | 8:17 | — | — | 8:15 | — | — | 8:13 | — | — | 8:10 | — | — | 8:07 | — | — | 8:06 | — | — | 8:04 | — |
mm | 1 | — | 3 | 9 | 2 | 1 | 3 | 5 | 2 | — | — | — | — | — | 3 | 5 | 2 | 1 | — | — | — |
Temp °C | 16 | 17 | 17 | 16 | 16 | 16 | 17 | 16 | 16 | 15 | 17 | 18 | 15 | 16 | 17 | 16 | 17 | 19 | 17 | 17 | 17 |
Feels °C | 16 | 16 | 14 | 13 | 15 | 13 | 11 | 10 | 13 | 10 | 14 | 15 | 12 | 13 | 14 | 10 | 12 | 16 | 11 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SW 6 | — | SSW 6 | SW 6 | SW 9 | SW 8 | SW 8 | SW 8 | SW 9 | SW 8 | SW 8 | SW 6 | NNW 5 | SW 6 | N 5 | — | SW 15 | — | — | SW 7 |
| kJ | 16 | 19 | — | 58 | 18 | 212 | 69 | 23 | 131 | 189 | 109 | 11 | 38 | 14 | 12 | 2 | — | 9 | — | — | 179 |
Swell 2 Height (m) Direction Period (s) | SW 12 | N 3 | SW 11 | S 11 | ESE 3 | NNW 4 | — | — | — | — | NW 5 | NNW 4 | — | SW 6 | W 16 | SW 16 | — | — | — | — | SW 14 |
| kJ | 5 | 1 | 5 | 2 | 1 | 6 | — | — | — | — | 23 | 3 | — | 21 | 5 | 10 | — | — | — | — | 8 |
Swell 3 Height (m) Direction Period (s) | — | SW 11 | — | — | — | — | — | — | — | — | — | SW 8 | — | — | W 16 | — | — | — | — | — | — |
| kJ | — | 5 | — | — | — | — | — | — | — | — | — | 2 | — | — | 5 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SW 5 | ESE 3 | N 2 | — | SSW 3 | SSW 5 | — | NW 5 | NW 5 | SW 6 | NW 4 | NW 4 | NNW 4 | SW 4 | SW 6 | SW 7 | SW 7 | SW 7 | NW 4 |
| kJ | — | — | 72 | 1 | 2 | — | 7 | 64 | — | 35 | 22 | 47 | 18 | 13 | 4 | 17 | 198 | 135 | 411 | 507 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 297 | 323 | 314 | 45 | 130 | 15 | 207 | 298 | 15 | 263 | 15 | 130 | 339 | 302 | 281 | 288 | 288 | 250 | 256 | 359 | 371 |
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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