Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Whistling Sands (Porth Oer) surfForecast / Wales – Lleyn / UK
48hr Weather and Surf, issued 5 pm Thursday 18 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
11.0° C
(Which is slightly warmer than usual)How big are the waves at Whistling Sands (Porth Oer) today?
The current surf forecast for Whistling Sands (Porth Oer) at 1AM is: 3.0m 7s primary swell from a Southwest direction (forecast issued at 05:00pm December 18). The wind direction is predicted to be cross-shore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Dec) | 10ft (3.0m) | 9s |
| Afternoon (19 Dec) | 7.5ft (2.3m) | 8s |
| Evening (19 Dec) | 6ft (1.9m) | 9s |
Table - waves today at Whistling Sands (Porth Oer). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 7 | 8 | 7 | 8 | 8 | 9 | 9 | 8 | 6 | 9 | 6 | 7 | 8 | 9 | 9 | 10 | 11 | 10 | 10 | 10 | 10 | 9 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 525 | 574 | 546 | 701 | 1161 | 1508 | 1308 | 986 | 751 | 348 | 542 | 379 | 637 | 958 | 1414 | 1968 | 2325 | 996 | 685 | 451 | 318 | 262 | 183 | 164 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | cross- off | cross- off | cross- off | off | cross- off | cross- off |
High Tide / height (m) | 7:21PM 3.41 | 7:39AM 3.58 | 7:58PM 3.48 | 8:14AM 3.69 | 8:33PM 3.52 | 8:49AM 3.77 | ||||||||||||||||||
Low Tide / height (m) | 1:55PM 0.79 | 2:08AM 0.76 | 2:33PM 0.67 | 2:44AM 0.69 | 3:10PM 0.59 | 3:20AM 0.64 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sunday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:26 | - | - | - | - | - | - | - | 8:27 | - | - | - | - | - | - | - | 8:27 | - |
| Sunset | 4:02 | - | - | - | - | - | - | - | 4:02 | - | - | - | - | - | - | - | 4:04 | - | - | - | - | - | - | - |
 |  |  |  | | |  | | | |  | | | |  | | | | |  | | | | | |
Rain (mm) | 2 | 2 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 2 | - | - | - | - | 3 |
| Temp. °C | 10 | 9 | 9 | 10 | 10 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 10 | 9 | 9 | 10 | 9 | 9 | 9 | 9 | 8 |
| Feels °C (?) | 3 | -2 | -1 | -1 | -1 | -2 | -2 | -1 | 1 | 1 | 1 | 1 | 0 | -2 | -3 | -2 | -3 | -2 | 2 | 1 | 2 | 5 | 3 | 1 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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