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Whistling Sands (Porth Oer) Surf Forecast
/ Wales – Lleyn (14 surf breaks) /
Surf Forecasts:
Whistling Sands (Porth Oer) surfForecast / Wales – Lleyn / UK
12 Day Weather and Surf, issued 5 am Thursday 11 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Whistling Sands (Porth Oer) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Whistling Sands (Porth Oer) sea temperature is
11.7° C
(Which is 1.2°C warmer than normal for this time of year)Best Forecast Surf Conditions for Whistling Sands (Porth Oer) this week:
The surf forecast for Whistling Sands (Porth Oer) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Dec 12) at 6AM. The primary swell is predicted to be 1.6m and 13s period with a secondary swell of 0.5m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Whistling Sands (Porth Oer) in the next 12 days are 2.4m 20s and forecast to arrive on Thursday (Dec 18) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Wednesday (Dec 17) at 6AM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Fri 12th Dec) | 5ft (1.6m) 13s |
| Best Surf | 6AM (Fri 12th Dec) | 5ft (1.6m) 13s |
| Most Powerful | 9AM (Thu 18th Dec) | 8ft (2.4m) 20s |
Table - best surf conditions forecast for Whistling Sands (Porth Oer) over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 7mm), mostly falling on Thu night. Very mild (max 12°C on Thu morning, min 8°C on Thu night). Winds increasing (calm on Thu night, near gales from the SSW by Sat afternoon). | Days 3-6 Weather Summary Heavy rain (total 63mm), heaviest during Sun night. Very mild (max 11°C on Sun morning, min 9°C on Mon night). Winds decreasing (gales from the SSW on Sun afternoon, calm by Tue afternoon). | ||||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 9 | 10 | 13 | 13 | 13 | 10 | 7 | 8 | 9 | 9 | 9 | 10 | 10 | 9 | 8 | 8 | 8 | 6 | 7 | 8 | 10 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 1474 | 1676 | 1374 | 846 | 796 | 496 | 480 | 1330 | 1710 | 1982 | 2476 | 3353 | 530 | 246 | 118 | 106 | 84 | 51 | 453 | 1690 | 1584 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | on | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | on | cross- on | on | cross- off | cross- off | cross- off | cross |
High Tide / height (m) | 12:52PM 3.51 | 1:34AM 2.89 | 1:58PM 3.28 | 2:47AM 2.81 | 3:09PM 3.14 | 3:57AM 2.86 | 4:15PM 3.11 | 4:55AM 2.98 | 5:11PM 3.14 | 5:42AM 3.14 | 5:59PM 3.22 | 6:24AM 3.30 | 6:42PM 3.32 | ||||||||
Low Tide / height (m) | 8:13PM 0.83 | 8:21AM 1.19 | 9:14PM 0.97 | 9:26AM 1.29 | 10:16PM 1.05 | 10:35AM 1.29 | 11:15PM 1.05 | 11:38AM 1.21 | 12:07AM 1.01 | 12:31PM 1.08 | 12:51AM 0.94 | 1:15PM 0.93 | 1:31AM 0.85 | ||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||
| Sunrise | 8:19 | - | - | 8:21 | - | - | 8:22 | - | - | 8:22 | - | - | 8:23 | - | - | 8:25 | - | - | 8:26 | - | - |
| Sunset | - | 4:02 | - | - | 4:01 | - | - | 4:01 | - | - | 4:01 | - | - | 4:01 | - | - | 4:02 | - | - | 4:02 | - |
 |  |  | |  |  | | |  |  | |  |  | | | | | | | | | |
Rain (mm) | - | 1 | 4 | - | - | - | - | - | 2 | 3 | 3 | 24 | 18 | 13 | 2 | - | - | - | 3 | 3 | 5 |
| Temp. °C | 12 | 12 | 11 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 9 | 9 | 9 | 10 | 9 | 11 | 11 |
| Feels °C (?) | 2 | 2 | 5 | 5 | 3 | 3 | -1 | -1 | 0 | 0 | -2 | -1 | 8 | 8 | 2 | 5 | 6 | 0 | -3 | 1 | 3 |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Whistling Sands (Porth Oer) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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 12 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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