Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 9 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 4AM (local time) - 5.5ft (1.7m), 6s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 4PM (local time) - 8ft (2.4m), 7s period, SW swell with 531 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 4AM (local time) - 5.5ft (1.7m), 6s 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 Wednesday (Sep 16) at 4AM. The primary swell is predicted to be 1.7m and 6s period. 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 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 1.9m 6s period and expected on Thursday (Sep 10) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Wed 16th Sep) | 5.5ft (1.7m) 6s |
| Best Surf | 4AM (Wed 16th Sep) | 5.5ft (1.7m) 6s |
| Most Powerful | 4PM (Thu 10th Sep) | 8ft (2.4m) 7s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's be honest, the next couple of weeks are looking pretty grim. We’ve got a long stretch of small, messy, and swamped-out conditions. This isn't one of those times where you can be picky; the truth is there’s nothing really worth getting wet for. The stretch from now right through to the middle of the month is just a write-off for any sort of decent surf.
Looking at the charts, the only real pulse of swell hits on Wednesday the 16th. Whistling Sands (Porth Oer) sees a bit of life with a 6ft SW swell pushing in, but the energy is pretty weak and the period is a short 7 seconds. Winds are offshore from the ESE, which will clean it up a bit, giving us a "surfable but very ordinary" situation. It’s an inconsistent spot anyway, so don’t expect much. After that, we go right back into the doldrums with tiny ankle-biters and onshore junk for another week.
There's a little flutter around Monday, September 23rd, with a 4ft NW windswell, period a snappy 5 seconds. Winds are cross-off from the east, so it might be clean, but again, the energy is low and it's short-period stuff. By the 24th, we get a bit more size at 4ft from the NW with clean offshore ESE winds, but same story – it's just not going to be any good.
So, what’s the call? If you’re desperate for a paddle, the best of a bad bunch is the morning of Wednesday, September 16th. But honestly, don’t hold your breath. It’s going to be a lean run, and around here, that’s the norm when the windows close. Keep an eye on it, but for now, leave the boards in the shed.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu afternoon. Very mild (max 17°C on Thu night, min 13°C on Tue night). Winds increasing (light winds from the NW on Wed afternoon, strong winds from the SSW by Thu morning). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 20°C on Mon afternoon, min 13°C on Sat night). Winds decreasing (strong winds from the SSW on Sat morning, calm by Sun afternoon). | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 | NW 5 | SW 4 | SW 5 | SW 7 | WSW 8 | SW 8 | SW 8 | SW 4 | SW 7 | SW 7 | SW 7 | NNW 5 | SW 6 | SW 6 | W 8 | SW 12 | SW 6 | SW 4 | SSW 4 | W 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 39 | 25 | 0 | 0 | 531 | 203 | 88 | 63 | 0 | 396 | 351 | 67 | 36 | 14 | 18 | 1 | 6 | 100 | 0 | 0 | 2 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-off | cross-off | cross-off | cross-on | on | on | cross-off | cross-off | cross | on | on | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | off |
High Tide | 7:36AM3.52m | 7:53PM4.02m | 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 | |||||||
Low Tide | 2:31PM0.47m | 3:02AM0.05m | 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 | ||||||||
 | |  |  | |  | |  |  | | |  | | | | | | | | | | |
 | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — | 6:46 | — | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — |
 | — | 7:50 | — | — | 7:46 | — | — | 7:45 | — | — | 7:42 | — | — | 7:39 | — | — | 7:37 | — | — | 7:35 | — |
mm | — | — | — | 1 | 3 | — | — | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 15 | 16 | 16 | 17 | 14 | 14 | 16 | 17 | 17 | 15 | 13 | 14 | 15 | 17 | 20 | 19 | 18 | 19 | 19 |
Feels °C | 7 | 12 | 10 | 9 | 9 | 14 | 10 | 13 | 8 | 11 | 10 | 10 | 10 | 13 | 12 | 15 | 19 | 18 | 15 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | SW 8 | NNW 6 | N 5 | — | — | WSW 8 | SW 8 | SW 8 | — | — | — | SW 7 | SW 7 | NNW 5 | N 4 | W 8 | SW 12 | SW 12 | — | — | W 11 |
| kJ | 39 | 43 | 2 | — | — | 203 | 88 | 63 | — | — | — | 67 | 27 | 13 | 1 | 1 | 6 | 6 | — | — | 2 |
Swell 2 Height (m) Direction Period (s) | — | SW 8 | NNW 4 | — | — | — | — | NW 4 | NNW 4 | — | — | — | — | SW 6 | W 13 | — | — | W 8 | — | — | — |
| kJ | — | 21 | 2 | — | — | — | — | 4 | 1 | — | — | — | — | 14 | 3 | — | — | 1 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 13 | NW 4 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 1 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNW 6 | NW 5 | SW 4 | SW 5 | SW 7 | — | NW 4 | — | SW 4 | SW 7 | SW 7 | NNW 5 | NNW 5 | NW 4 | SW 6 | SSW 5 | SW 5 | SW 6 | SW 4 | SSW 4 | SSW 6 |
| kJ | 131 | 25 | 17 | 115 | 531 | — | 4 | — | 18 | 396 | 351 | 37 | 36 | 5 | 18 | 40 | 55 | 100 | 23 | 17 | 139 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 130 | 15 | 150 | 348 | 437 | 15 | 130 | 15 | 191 | 288 | 526 | 130 | 129 | 106 | 132 | 163 | 256 | 233 | 233 | 243 | 4 |
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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