Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 10 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 4PM (local time) - 7.5ft (2.3m), 7s period, SW swell with 485 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 2.3m 7s and forecast to arrive on Thursday (Sep 10) at 4PM. 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 Saturday (Sep 12) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 4PM (Thu 10th Sep) | 7.5ft (2.3m) 7s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on offer here.
First up, the outlook for Whistling Sands (Porth Oer). Honestly, it’s a tough read. The whole 16-day window is a bit of a washout for a proper paddle session. There’s no standout, no real moment where it all comes together. The spot is inconsistent and sheltered, which means it takes a very specific alignment to fire, and we just don’t get it here.
We start with nothing on Thursday the 10th, and the pattern just doesn’t improve. There are a few pulses of swell, like Thursday afternoon with a 8ft SW swell pushing a moderate 485 units of energy, but the wind is howling from the SSW at 25 mph as a cross-off. That makes for poor surf. Friday the 11th afternoon sees the wind drop to a glassy 3 mph from the WNW, which is lovely, but the swell has collapsed to just 2ft and it’s only a 7-second period. Clean but tiny.
We get another pulse on Saturday the 12th – a 8ft SW swell again – but the wind is a strong cross-shore at 28 mph. The setup looks more interesting for kite surfing than paddle surfing that day with those conditions.
The rest of the period follows this pattern. Nothing really clicks. There’s a gap from the 13th through to the 19th with only small, weak energy. By Sunday the 20th, there’s another 7ft NW swell with 366 units of energy, but the wind is a moderate cross-onshore at 16 mph, making it choppy. The swell period is only 6 seconds, so it’s not got any shape.
Because this break is inconsistent, a blank run like this is more normal for the area. We just have to take it on the chin. Forecasts can change, but for now, there’s nothing to recommend.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu afternoon. Very mild (max 18°C on Thu night, min 13°C on Fri morning). Winds decreasing (strong winds from the SSW on Thu morning, calm by Fri afternoon). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue morning. Very mild (max 18°C on Mon morning, min 13°C on Sun morning). Winds increasing (light winds from the NW on Sun morning, strong winds from the S by Mon night). | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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 5 | SW 7 | WSW 7 | SW 7 | SW 7 | SW 5 | SW 7 | SW 7 | SW 7 | NNW 5 | SW 6 | SW 13 | W 12 | W 9 | SW 6 | SW 6 | NW 5 | NNW 6 | NNW 5 | NW 4 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 485 | 222 | 59 | 37 | 0 | 437 | 408 | 128 | 34 | 20 | 7 | 3 | 2 | 212 | 73 | 49 | 122 | 44 | 9 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | on | glassy | cross-off | cross | cross | on | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross-off | on | on | cross-on | cross-on | on |
High Tide | 8:20AM3.78m | 8:36PM4.30m | 9:01AM3.98m | 9:16PM4.46m | 9:39AM4.09m | 9:55PM4.48m | 10:15AM4.11m | 10:32PM4.37m | 10:51AM4.02m | 11:09PM4.13m | 11:26AM3.85m | 11:45PM3.81m | 12:01PM3.59m | 00:22AM3.44m | |||||||
Low Tide | 3:14PM0.23m | 3:43AM-0.12m | 3:53PM0.09m | 4:21AM-0.15m | 4:29PM0.06m | 4:55AM-0.05m | 5:03PM0.13m | 5:27AM0.15m | 5:36PM0.29m | 5:57AM0.42m | 6:07PM0.51m | 6:26AM0.72m | 6:39PM0.77m | ||||||||
 | |  |  | | |  |  |  | | | | | | |  | | | | | | |
 | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:52 | — | — |
 | — | 7:46 | — | — | 7:45 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — | — | 7:35 | — | — | 7:32 | — |
mm | 1 | 2 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 5 | — | 2 | 1 | — | — |
Temp °C | 16 | 17 | 18 | 14 | 14 | 16 | 16 | 18 | 17 | 14 | 14 | 17 | 18 | 18 | 17 | 17 | 17 | 15 | 13 | 14 | 14 |
Feels °C | 9 | 12 | 14 | 10 | 11 | 9 | 9 | 13 | 16 | 12 | 13 | 14 | 15 | 14 | 13 | 11 | 13 | 8 | 4 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | — | — | WSW 7 | SW 7 | SW 7 | — | — | — | SW 7 | SW 6 | NNW 5 | N 4 | W 12 | W 9 | W 12 | SW 6 | SW 6 | SW 6 | WSW 6 | NNW 5 | NNW 4 |
| kJ | — | — | 222 | 59 | 37 | — | — | — | 128 | 34 | 13 | 1 | 3 | 2 | 3 | 73 | 23 | 5 | 4 | 12 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | NNW 4 | — | — | — | — | — | SW 6 | SW 13 | — | — | — | — | W 11 | SW 11 | W 8 | SW 6 | SW 6 |
| kJ | — | — | — | — | 6 | — | — | — | — | — | 20 | 7 | — | — | — | — | 2 | 5 | 1 | 2 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SW 13 | — | — | — | — | — | — | — | W 11 | W 12 | W 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | 7 | — | — | — | — | — | — | — | 2 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | SSW 5 | SW 7 | — | NW 4 | — | SW 5 | SW 7 | SW 7 | NW 3 | NNW 5 | — | SW 3 | SW 5 | SW 6 | SW 6 | NW 4 | NW 5 | NNW 6 | NNW 5 | NW 4 | — |
| kJ | 98 | 485 | — | 9 | — | 47 | 437 | 408 | 6 | 33 | — | 9 | 119 | 171 | 212 | 15 | 49 | 122 | 44 | 9 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 309 | 88 | 229 | 130 | 10 | 233 | 270 | 359 | 37 | 112 | 130 | 189 | 256 | 256 | 139 | 241 | 578 | 149 | 282 | 181 | 145 |
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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