Surf Forecasts:
Whistling Sands (Porth Oer) surf forecast from 20 Oct 2026:
- Best quality surf: Wednesday 21 Oct, 7AM (local time) - 3ft (0.9m), 7s period, SW swell with offshore winds.
- Most powerful swell: Friday 23 Oct, 10AM (local time) - 15ft (4.5m), 9s period, NW swell with 3,432 kJ wave energy.
- Next surfable swell (1★+): Wednesday 21 Oct, 7AM (local time) - 3ft (0.9m), 7s 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 (Oct 21) at 7AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 16 days are 4.5m 9s and forecast to arrive on Friday (Oct 23) at 10AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Monday (Oct 26) at 9AM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 21st Oct) | 3ft (0.9m) 7s |
| Best Surf | 7AM (Wed 21st Oct) | 3ft (0.9m) 7s |
| Most Powerful | 10AM (Fri 23rd Oct) | 15ft (4.5m) 9s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 16 days.
Short Range ForecastHeavy rain (total 28mm), heaviest during Wed morning. Very mild (max 13°C on Thu afternoon, min 9°C on Tue morning). Mainly severe gales. | Days 4-6 Weather SummaryHeavy rain (total 25mm), heaviest during Sat afternoon. Very mild (max 16°C on Sat night, min 9°C on Fri morning). Winds decreasing (severe gales from the NW on Fri morning, moderate winds from the W by Sat morning). | ||||||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | |||||||||||||||
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 6 | SW 4 | SW 4 | SW 10 | WNW 7 | SW 8 | WSW 8 | SW 8 | SW 7 | NW 9 | NW 8 | NW 7 | WSW 7 | SSW 7 | WSW 9 | W 7 | W 7 | SW 9 | SSW 6 | SW 7 | SW 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3 | 3 | 16 | 496 | 858 | 116 | 249 | 177 | 102 | 3432 | 1452 | 795 | 68 | 633 | 928 | 993 | 665 | 266 | 0 | 462 | 1435 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross | on | cross-on | cross-on | off | off | on | on | on | cross-on | cross-off | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross |
High Tide | 4:58PM2.78m | 5:48AM2.66m | 5:58PM3.03m | 6:31AM2.94m | 6:39PM3.33m | 7:06AM3.26m | 7:15PM3.64m | 7:39AM3.58m | 7:50PM3.93m | 8:13AM3.88m | 8:27PM4.17m | 8:49AM4.11m | 9:05PM4.32m | ||||||||
Low Tide | 10:52AM1.54m | 11:49PM1.28m | 12:03PM1.35m | 00:44AM1.01m | 12:55PM1.09m | 1:27AM0.71m | 1:39PM0.81m | 2:06AM0.44m | 2:19PM0.56m | 2:43AM0.23m | 2:57PM0.34m | 3:21AM0.10m | 3:37PM0.19m | 3:59AM0.07m | |||||||
 |  |  |  | | |  | | | | |  |  |  | |  | | | | | | |
 | 7:52 | — | — | 7:54 | — | — | 7:56 | — | — | 7:58 | — | — | 8:00 | — | — | 7:00 | — | — | 8:03 | — | — |
 | — | 6:13 | — | — | 6:10 | — | — | 6:08 | — | — | 6:07 | — | — | 6:05 | — | — | 5:02 | — | — | 6:00 | — |
mm | 1 | 1 | 4 | 8 | 2 | 2 | — | 1 | 9 | 3 | 2 | — | — | 12 | 8 | — | — | — | 7 | — | 5 |
Temp °C | 11 | 11 | 12 | 12 | 11 | 11 | 12 | 13 | 13 | 10 | 11 | 10 | 12 | 14 | 16 | 12 | 12 | 13 | 14 | 16 | 16 |
Feels °C | 7 | 6 | 6 | 11 | 1 | 4 | 8 | 7 | 4 | -5 | -2 | -5 | 5 | 3 | 6 | 0 | 0 | 3 | 2 | 6 | 3 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SW 4 | SW 4 | SW 10 | — | NNW 6 | NNW 5 | SW 8 | SW 7 | SW 10 | SW 10 | WSW 9 | NNW 6 | N 6 | — | — | — | NW 6 | NNW 6 | — | — |
| kJ | 3 | 3 | 16 | 496 | — | 57 | 5 | 177 | 102 | 226 | 104 | 103 | 87 | 2 | — | — | — | 85 | 3 | — | — |
Swell 2 Height (m) Direction Period (s) | W 11 | SW 8 | — | E 4 | — | — | — | NW 4 | W 15 | WSW 14 | — | — | SW 9 | — | — | — | — | — | NNW 5 | — | — |
| kJ | 2 | 3 | — | 4 | — | — | — | 2 | 5 | 76 | — | — | 39 | — | — | — | — | — | 3 | — | — |
Swell 3 Height (m) Direction Period (s) | W 8 | W 10 | — | SSE 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 2 | — | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | — | S 4 | E 4 | WNW 7 | SW 8 | WSW 8 | — | SE 4 | NW 9 | NW 8 | NW 7 | WSW 7 | SSW 7 | WSW 9 | W 7 | W 7 | SW 9 | SSW 6 | SW 7 | SW 8 |
| kJ | 6 | — | 46 | 14 | 858 | 116 | 249 | — | 52 | 3432 | 1452 | 795 | 68 | 633 | 928 | 993 | 665 | 266 | 230 | 462 | 1435 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 132 | 139 | 191 | 4 | 310 | 15 | 15 | 41 | 179 | 316 | 323 | 250 | 15 | 314 | 960 | 578 | 578 | 125 | 328 | 635 | 853 |
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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