Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 6 Sep 2026:
- Most powerful swell: Thursday 10 Sep, 10PM (local time) - 6ft (1.8m), 6s period, SW swell with 228 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 1.8m 6s and forecast to arrive on Thursday (Sep 10) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Thursday (Sep 10) at 7PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10PM (Thu 10th Sep) | 6ft (1.8m) 6s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's be straight with you: the next 16 days are a real challenge for a wave at Whistling Sands (Porth Oer). This is a sheltered, beginner-friendly spot, but it's also inconsistent, and the forecast is a tough one to read. We're looking at a long, dry spell with next to nothing on offer, so don't rush to wax up.
The water temperature is sitting at 62°, which is a touch warmer than normal for this time of year, so at least you won't be freezing if you do decide to get wet.
The first few days are a write-off. Saturday the 5th has a weak 2 ft SW swell with a short 6-second period and a moderate cross-shore breeze – just poor surf. Sunday morning the 6th is clean but tiny, with a 0.3 ft swell. Monday and Tuesday are just messy and choppy, with a lumpy 5 ft swell on Monday afternoon that's getting smashed by a fresh breeze. The energy is low to moderate, with the combined energy on Monday afternoon hitting 113 (moderate wave energy), but it's all blown out.
We get a bit of a window on Monday the 14th. The morning is glassy, with a tiny 2 ft W swell. It's clean, but there's just no power. The energy is a paltry 8 (weak energy). This is more of a paddle than a surf.
The real standout, the only thing that even gets a mention, is the morning of Friday the 18th of September. We've got a 5 ft SW swell with a 6-second period. The wind is light and offshore from the SE, making it clean. The combined energy is 137 (moderate wave energy). It's still not a world-beater, but it's the only window where you'll find a surfable wave. The waves are just "surfable but very ordinary" according to the data, so manage your expectations. It's small, a bit short-period, but it'll be clean. Saturday the 19th morning also looks clean with a 4 ft SW swell and offshore SSE winds, but the energy drops to 86 (weak energy).
Overall, for the next 16 days, it’s a long wait for a very average wave. Don't expect much.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Sat night. Very mild (max 19°C on Sun afternoon, min 13°C on Mon night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Thu night. Very mild (max 17°C on Thu night, min 13°C on Tue night). Winds decreasing (strong winds from the WNW on Tue night, light winds from the WNW by Wed night). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 6 | SW 6 | SW 13 | SW 13 | SW 16 | WSW 14 | SW 5 | WSW 6 | WSW 5 | WSW 5 | WNW 6 | NW 6 | WSW 5 | SW 7 | SW 4 | SW 6 | SW 6 | WSW 7 | W 5 | SW 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 22 | 7 | 7 | 6 | 11 | 79 | 113 | 136 | 112 | 117 | 178 | 118 | 17 | 9 | 12 | 0 | 146 | 83 | 43 | 49 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-off | cross-off | cross | on | on | on |
High Tide | 3:52AM2.93m | 4:36PM3.02m | 5:28AM2.98m | 6:01PM3.28m | 6:41AM3.22m | 7:03PM3.65m | 7:36AM3.52m | 7:53PM4.02m | 8:20AM3.78m | 8:36PM4.30m | 9:01AM3.98m | 9:16PM4.46m | ||||||||
Low Tide | 10:31PM1.24m | 11:19AM1.31m | 00:09AM1.06m | 12:42PM1.09m | 1:21AM0.71m | 1:43PM0.77m | 2:16AM0.35m | 2:31PM0.47m | 3:02AM0.05m | 3:14PM0.23m | 3:43AM-0.12m | 3:53PM0.09m | ||||||||
 |  | |  |  | | |  |  | |  | | |  | | | | | | | |
 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — | 6:41 | — | — | 6:43 | — | — | 6:45 | — | — |
 | 7:59 | — | — | 7:57 | — | — | 7:53 | — | — | 7:52 | — | — | 7:50 | — | — | 7:46 | — | — | 7:45 | — |
mm | — | 2 | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | 2 | — | — | — |
Temp °C | 14 | 15 | 18 | 19 | 17 | 15 | 16 | 15 | 15 | 15 | 14 | 14 | 16 | 16 | 16 | 16 | 17 | 15 | 17 | 15 |
Feels °C | 11 | 11 | 13 | 13 | 13 | 11 | 9 | 10 | 7 | 8 | 6 | 7 | 13 | 12 | 12 | 10 | 12 | 8 | 11 | 9 |
Swell 1 Height (m) Direction Period (s) | NNW 5 | SW 6 | SW 13 | SW 13 | SW 16 | WSW 14 | — | SW 12 | — | — | W 10 | SW 6 | NNW 6 | NNW 5 | — | — | — | WSW 8 | SW 8 | SW 7 |
| kJ | 8 | 6 | 7 | 6 | 11 | 79 | — | 35 | — | — | 2 | 32 | 34 | 8 | — | — | — | 7 | 17 | 49 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | — | SW 12 | NW 4 | — | — | — | — | — | — | W 8 | SW 7 | NW 4 | — | — | — | SSW 7 | — |
| kJ | 7 | 7 | 7 | — | 6 | 1 | — | — | — | — | — | — | 1 | 8 | 1 | — | — | — | 5 | — |
Swell 3 Height (m) Direction Period (s) | SW 13 | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | — | — | — | — | — | — |
| kJ | 7 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SSW 3 | SSW 5 | SW 6 | SW 6 | WSW 6 | SW 5 | WSW 6 | WSW 5 | WSW 5 | WNW 6 | NW 6 | WSW 5 | SW 4 | SW 4 | SW 6 | SW 6 | WSW 7 | W 5 | NW 4 |
| kJ | 22 | 9 | 66 | 122 | 104 | 40 | 113 | 136 | 112 | 117 | 178 | 118 | 17 | 9 | 12 | 138 | 146 | 83 | 43 | 26 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 256 | 139 | 191 | 402 | 179 | 15 | 463 | 250 | 499 | 499 | 299 | 297 | 301 | 132 | 191 | 298 | 339 | 499 | 498 | 130 |
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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