Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 15 Sep 2026:
- Most powerful swell: Friday 18 Sep, 10PM (local time) - 7.5ft (2.3m), 7s period, SW swell with 480 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 Friday (Sep 18) 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 1.2m 5s period and expected on Tuesday (Sep 22) at 7AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Fri 18th Sep) | 7.5ft (2.3m) 7s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright, let me tell you how it’s looking for the next couple of weeks at Whistling Sands (Porth Oer) . I’ve scanned the charts and, honestly, I’m struggling to find a reason to get too excited right now.
The whole 16-day run is pretty much a write-off for decent paddle surfing. We’ve got a gap right from the start with poor conditions; the setup is small and consistently battered by onshore or cross-onshore winds, making it lumpy and choppy. The swell energy does jump up a bit around the 19th of September, hitting 325 (moderate energy), with swell heights around 6 ft from the SW, but the wind is just messy, it’s cross-shore or cross-onshore with a fresh breeze. It’s one of those times where the beach setup looks more interesting for a kite surfer than someone on a proper surfboard.
There is a brief, cleaner window on the 20th of September morning with light cross-offshore winds and a clean surface, but the swell drops right back down to a tiny 3 ft from the SW. The combined energy is weak (54), so it’s not really going to give you much to work with. After that, the swell fades into nearly nothing for days, with periods of glassy conditions on the 23rd of September afternoon, but with a 0.3 ft swell from the SW and a 15-second period – way too long for this sand bottom to hold any shape at that size. You’ll see a few offshore days right at the tail end of September, but again, the swell is barely a ripple.
There’s nothing here that reaches a standout level for a surfing session. The water temp doesn’t have an anomaly noted in the data, so it’s about average for this time of year.
Honestly, for this stretch, the forecast looks pretty bleak for surfing. This kind of blank run isn’t that unusual for this sheltered spot. Forecasts can change though, so keep an eye on it, but for now, I’d say leave the board in the car.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Mon night. Very mild (max 17°C on Mon night, min 13°C on Tue night). Mainly strong winds. | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Fri night. Very mild (max 19°C on Sat afternoon, min 13°C on Thu night). Winds decreasing (strong winds from the SSW on Fri afternoon, calm by Sat night). | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
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 6 | WSW 5 | NW 5 | NW 6 | WSW 5 | SW 5 | WSW 7 | WSW 5 | W 5 | W 5 | SW 5 | SW 7 | SW 7 | SW 7 | SW 6 | SW 6 | SW 6 | W 14 | SW 13 | SW 13 | W 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 131 | 81 | 56 | 97 | 17 | 119 | 195 | 109 | 129 | 56 | 77 | 347 | 325 | 312 | 116 | 46 | 51 | 4 | 7 | 7 | 3 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:26AM3.85m | 11:45PM3.81m | 12:01PM3.59m | 00:22AM3.44m | 12:37PM3.29m | 1:02AM3.07m | 1:20PM2.97m | 1:52AM2.71m | 2:21PM2.69m | 3:20AM2.46m | 4:17PM2.58m | 5:27AM2.49m | 5:57PM2.77m | ||||||||
Low Tide | 5:57AM0.42m | 6:07PM0.51m | 6:26AM0.72m | 6:39PM0.77m | 6:56AM1.02m | 7:16PM1.06m | 7:33AM1.31m | 8:07PM1.34m | 8:31AM1.56m | 9:31PM1.55m | 10:10AM1.67m | 11:23PM1.54m | 11:53AM1.55m | 00:44AM1.32m | |||||||
 |  |  | | |  |  | |  | |  |  | | | | | | | | | | |
 | 6:50 | — | — | 6:52 | — | — | 6:54 | — | — | 6:56 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — |
 | — | 7:35 | — | — | 7:32 | — | — | 7:30 | — | — | 7:28 | — | — | 7:25 | — | — | 7:22 | — | — | 7:21 | — |
mm | — | 1 | — | — | — | 3 | — | — | — | — | 4 | 6 | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 16 | 16 | 14 | 16 | 15 | 14 | 16 | 14 | 15 | 14 | 16 | 17 | 19 | 17 | 15 | 17 | 18 | 17 | 17 | 17 |
Feels °C | 9 | 12 | 10 | 8 | 10 | 8 | 7 | 9 | 6 | 9 | 6 | 10 | 13 | 16 | 15 | 12 | 15 | 17 | 16 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | — | W 11 | SW 6 | SW 5 | NNW 5 | N 5 | — | — | — | — | NNW 5 | — | — | — | SW 6 | SW 6 | SW 6 | W 14 | SW 13 | SW 13 | W 13 |
| kJ | — | 2 | 31 | 7 | 34 | 2 | — | — | — | — | 2 | — | — | — | 116 | 46 | 24 | 4 | 7 | 7 | 3 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SW 7 | WSW 7 | — | — | — | — | W 18 | — | — | — | — | W 14 | NNW 4 | NNW 4 | — | W 13 | W 13 | W 13 |
| kJ | — | — | — | 8 | 11 | — | — | — | — | 6 | — | — | — | — | 4 | 1 | 1 | — | 3 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | WSW 11 | — | — | — | — | — | — | — | — | — | — | — | SW 14 | SW 14 | — | — | — | — |
| kJ | — | — | — | 11 | — | — | — | — | — | — | — | — | — | — | — | 8 | 8 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 6 | WSW 5 | NW 5 | NW 6 | WSW 5 | SW 5 | WSW 7 | WSW 5 | W 5 | W 5 | SW 5 | SW 7 | SW 7 | SW 7 | — | — | SW 6 | SW 5 | SW 4 | SW 4 | SW 4 |
| kJ | 131 | 81 | 56 | 97 | 17 | 119 | 195 | 109 | 129 | 56 | 77 | 347 | 325 | 312 | — | — | 51 | 55 | 27 | 15 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 499 | 499 | 130 | 149 | 292 | 323 | 324 | 499 | 130 | 277 | 309 | 292 | 359 | 15 | 8 | 106 | 137 | 132 | 132 | 249 | 113 |
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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