Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 26 Aug 2026:
- Most powerful swell: Monday 31 Aug, 1AM (local time) - 6ft (1.9m), 8s period, WSW swell with 447 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 1.9m 8s and forecast to arrive on Monday (Aug 31) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Sunday (Aug 30) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1AM (Mon 31st Aug) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright, this is Rusty, and I've gotta level with you. We've got a long look ahead, but the news isn't what we want to hear. The season's throwing us a bit of a curveball, and we're looking at a pretty quiet stretch for the next 16 days. There are no real standout sessions to get excited about.
Let's start with the water. The temperature at Whistling Sands (Porth Oer) is sitting at 63°, which is a touch warmer than normal for this time of year. About a degree and a half above average, so it's a nice little bonus, but it's not going to make up for the lack of decent waves.
We've got a long gap at the start of the period. The first proper surfable swell doesn't really show up until Saturday, August 29th. Even then, the energy is weak (150), with a 5ft swell from the SSW, but the period is a short, choppy 6 seconds. Conditions are clean in the morning with a cross-offshore wind, but the whole thing is a bit of a mushy, low-energy affair. The wind swings onshore in the afternoon, making it even worse.
Sunday, August 30th, is pretty much the same story. A 4ft SSW swell, still short period at 9 seconds, and clean again in the morning. But the wave energy is still weak (176), and all the other sessions are just a mess of onshore winds, cross-chop, and tiny surf.
Now, things get a bit more interesting, but not in a good way. By the start of September, the wind really cranks up. We get a 6ft SW swell on the morning of Tuesday, September 1st, but it's accompanied by a 25 mph cross-shore wind. The combined energy is moderate (306), but it's so messy it's borderline unrideable. This pattern continues through the first week of September with strong winds and poor surf quality.
The only real pulse of size comes way out on Friday, September 4th, with a 10ft SW swell. The energy is strong (1195), but the wind is a near-gale from the WSW at 31 mph. That's a full-on washing machine. For a sheltered spot like Whistling Sands, at that size and with that wind, it's going to be a total blown-out mess. Only for the absolutely hardcore, and even then, only if you're a masochist.
The following week offers a few mornings with a clean offshore breeze, like on Monday, September 8th, but the swell is tiny (2ft) and the energy is weak (33). The last few days of the outlook show a building swell again, hitting 8ft on Thursday, September 10th, but the wind is cross-onshore, the period is short, and it's just not a quality wave.
So, to be blunt, there's nothing on the menu that's worth a special trip. The consistent wind and lack of quality groundswell mean the surf is going to be poor for the entire 16-day window. For a spot that's already inconsistent, this is a pretty normal run of bad luck. It's not good for anything other than maybe a beginner trying to get wet in the smallest of bumps, and even then, the wind is a problem. Hang in there, and keep an eye on the charts. The patterns will shift.
Rusty.
Short Range ForecastHeavy rain (total 54mm), heaviest during Thu afternoon. Warm (max 22°C on Wed night, min 16°C on Thu afternoon). Winds increasing (light winds from the SE on Thu morning, fresh winds from the SW by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 34mm), heaviest during Sat morning. Very mild (max 17°C on Sat morning, min 14°C on Sun night). Winds increasing (moderate winds from the W on Mon morning, strong winds from the SW by Mon night). | ||||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | |||||||||||||||
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 8 | SSW 8 | SSW 7 | SSW 7 | SW 12 | SW 5 | NNW 6 | SW 7 | SW 7 | SW 6 | SSW 7 | SW 9 | SW 9 | SW 6 | WSW 8 | SW 9 | SW 8 | SW 6 | SW 7 | SW 7 | SW 6 |
Wave Graph | |||||||||||||||||||||
17 | 12 | 5 | 6 | 6 | 42 | 81 | 46 | 128 | 70 | 142 | 281 | 132 | 269 | 447 | 349 | 196 | 275 | 169 | 77 | 25 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | cross-off | cross-off | cross-on | cross | on | cross | cross | cross-off | cross-off | cross-on | cross-off | cross-off | cross-on | on | cross-off | cross-off | cross-on | cross-on | cross-on |
High Tide | 8:28PM3.66m | 8:46AM3.48m | 8:59PM3.92m | 9:16AM3.67m | 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 | ||||||||
Low Tide | 2:53PM0.72m | 3:20AM0.50m | 3:26PM0.50m | 3:53AM0.30m | 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 | ||||||||
6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — | 6:24 | — | — | 6:26 | — | — | 6:28 | — | — | |
— | 8:22 | — | — | 8:20 | — | — | 8:17 | — | — | 8:15 | — | — | 8:13 | — | — | 8:10 | — | — | 8:07 | — | |
mm | — | — | — | 4 | 27 | 20 | — | — | 3 | 10 | 6 | — | 4 | 5 | 2 | — | — | 7 | — | — | — |
Temp °C | 20 | 21 | 22 | 17 | 16 | 16 | 16 | 18 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 14 | 16 | 16 | 15 | 17 | 16 |
Feels °C | 19 | 19 | 20 | 16 | 15 | 14 | 13 | 15 | 14 | 11 | 13 | 13 | 13 | 11 | 11 | 8 | 10 | 9 | 9 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SSW 8 | SSW 7 | SSW 7 | SW 6 | SW 5 | SW 6 | SW 7 | N 4 | SW 6 | SSW 7 | SW 9 | SW 9 | — | — | SW 9 | NW 5 | — | SW 7 | SW 7 | SW 6 |
17 | 12 | 5 | 4 | 2 | 42 | 32 | 46 | 1 | 70 | 142 | 281 | 132 | — | — | 349 | 24 | — | 169 | 77 | 25 | |
Swell 2 Height (m) Direction Period (s) | SW 12 | — | N 3 | SW 12 | — | SW 12 | S 12 | N 5 | S 11 | — | — | — | NNW 3 | — | — | — | — | — | — | NW 4 | W 16 |
6 | — | 1 | 6 | — | 5 | 3 | 25 | 2 | — | — | — | 1 | — | — | — | — | — | — | 9 | 5 | |
Swell 3 Height (m) Direction Period (s) | W 8 | SW 12 | SW 4 | N 5 | SW 12 | — | W 12 | S 12 | — | — | — | — | — | — | — | — | — | — | — | — | — |
1 | 6 | 1 | 1 | 6 | — | 3 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | ESE 4 | — | E 2 | ESE 3 | — | NNW 4 | NNW 6 | WNW 4 | SW 7 | SSE 4 | SW 7 | NW 3 | SSW 4 | SW 6 | WSW 8 | NW 5 | SW 8 | SW 6 | NW 4 | — | NW 4 |
9 | — | 1 | 3 | — | 11 | 81 | 2 | 128 | 17 | 91 | 6 | 11 | 269 | 447 | 73 | 196 | 275 | 15 | — | 16 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 258 | 336 | 298 | 279 | 189 | 189 | 179 | 15 | 241 | 325 | 88 | 88 | 305 | 60 | 15 | 125 | 278 | 256 | 622 | 467 | 328 |
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.











