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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 Monday 08 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
11.8° 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 9AM. The primary swell is predicted to be 1.9m and 12s period with a secondary swell of 1.3m and 13s. 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 5.0m 12s and forecast to arrive on Tuesday (Dec 09) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Tuesday (Dec 09) at 12AM.
| Wave Type | Time (GMT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Fri 12th Dec) | 6ft (1.9m) 12s |
| Best Surf | 9AM (Fri 12th Dec) | 6ft (1.9m) 12s |
| Most Powerful | 12PM (Tue 9th Dec) | 16ft (5.0m) 12s |
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 Heavy rain (total 27mm), heaviest during Mon night. Very mild (max 14°C on Tue morning, min 9°C on Wed night). Winds increasing (fresh winds from the S on Mon night, gales from the S by Tue morning). | Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Fri morning. Very mild (max 12°C on Sat night, min 8°C on Thu night). Winds increasing (calm on Fri morning, near gales from the SSW by Sat night). | ||||||||||||||||||||
Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||
| 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) (?) | 10 | 11 | 10 | 10 | 12 | 13 | 12 | 12 | 11 | 7 | 9 | 10 | 12 | 7 | 8 | 8 | 7 | 8 | 11 | 11 | 11 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 1477 | 1246 | 614 | 4473 | 5178 | 2840 | 1742 | 1323 | 1121 | 703 | 969 | 1780 | 1083 | 535 | 705 | 866 | 538 | 1080 | 5254 | 1514 | 553 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | off | cross- off | cross | cross | cross- on | cross | cross- off | cross- off | cross- off | cross- off | glass | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross | cross- on |
High Tide / height (m) | 10:11AM 4.22 | 10:40PM 3.66 | 11:00AM 4.02 | 11:32PM 3.37 | 11:53AM 3.77 | 12:29AM 3.09 | 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 | ||||||||
Low Tide / height (m) | 5:27PM 0.19 | 5:39AM 0.61 | 6:20PM 0.40 | 6:29AM 0.82 | 7:15PM 0.62 | 7:22AM 1.02 | 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 | ||||||||
Monday 08 | Tuesday 09 | Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||
| Sunrise | 8:17 | - | - | 8:18 | - | - | 8:18 | - | - | 8:19 | - | - | 8:21 | - | - | 8:22 | - | - | 8:22 | - | - |
| Sunset | - | 4:02 | - | - | 4:02 | - | - | 4:02 | - | - | 4:02 | - | - | 4:01 | - | - | 4:01 | - | - | 4:01 | - |
 |  |  | |  |  |  | |  | | |  | |  | |  | | |  | | | |
Rain (mm) | - | 2 | 20 | 3 | 1 | 1 | - | - | - | - | - | 5 | 5 | - | 2 | 3 | 1 | 3 | 9 | 5 | - |
| Temp. °C | 12 | 12 | 13 | 14 | 12 | 12 | 10 | 10 | 10 | 10 | 11 | 11 | 9 | 10 | 10 | 10 | 10 | 12 | 12 | 11 | 11 |
| Feels °C (?) | 4 | 4 | 3 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 0 | 5 | 4 | 2 | 0 | 2 | 1 | -1 | 4 | 7 |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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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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