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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
48hr Weather and Surf, issued 12 am Monday 18 May 2026 BSTForecast 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
10.8° C
(Which is normal for this time of year)How big are the waves at Whistling Sands (Porth Oer) today?
The current surf forecast for Whistling Sands (Porth Oer) at 6AM is: 1.2m 7s primary swell from a Southwest direction and 1.0m 7s secondary swell from a Southwest direction, 0.3m 4s secondary swell from a Northwest direction (forecast issued at 12:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3ft (0.9m) | 7s |
| Afternoon (18 May) | 2.5ft (0.8m) | 7s |
| Evening (18 May) | - | - |
Table - waves today at Whistling Sands (Porth Oer). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 14mm), heaviest on Mon night. Very mild (max 12°C on Mon night, min 9°C on Sun night). Winds increasing (light winds from the W on Sun night, strong winds from the SW by Tue afternoon). | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SW 6 | SW 7 | SW 7 | SW 7 | SW 7 | SW 6 | SSW 6 | SW 6 | S 6 | SSW 7 | SSW 7 | SSW 7 | SW 7 | SW 7 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 7 | SW 7 | SW 6 | SW 6 | |
98 | 127 | 88 | 77 | 54 | 60 | 69 | 52 | 270 | 397 | 344 | 352 | 372 | 558 | 676 | 884 | 865 | 724 | 545 | 504 | 436 | 436 | 302 | 231 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | |
High Tide | 9:53AM4.27m | 10:14PM4.31m | 10:41AM4.11m | 11:01PM4.22m | 11:30AM3.84m | |||||||||||||||||||
Low Tide | 4:30AM0.06m | 4:52PM0.21m | 5:20AM0.08m | 5:41PM0.37m | 6:14AM0.19m | 6:32PM0.57m | ||||||||||||||||||
 |  |  |  | | | | | | |  | |  |  | |  | |  | | | | | | | |
 | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:13 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:13 | — | — | — | — | — | — | — | 9:15 | — | — | — | — | — | — | — | 9:15 | — |
2 | 1 | — | — | — | — | — | 1 | 2 | 4 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 9 | 9 | 9 | 10 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 12 | 12 | 13 |
5 | 4 | 6 | 5 | 5 | 6 | 5 | 3 | 2 | 3 | 6 | 5 | 4 | 3 | 2 | 3 | 4 | 4 | 5 | 5 | 4 | 5 | 5 | 7 | |
Swell 1 Height (m) Direction Period (s) | W 12 | W 12 | SW 7 | SW 7 | SW 7 | — | — | SW 6 | SW 6 | SW 7 | — | — | — | — | — | — | — | — | — | — | — | — | WSW 12 | WSW 9 |
 kJ | 3 | 3 | 88 | 77 | 54 | — | — | 52 | 73 | 115 | — | — | — | — | — | — | — | — | — | — | — | — | 52 | 58 |
Swell 2 Height (m) Direction Period (s) | W 15 | W 11 | NW 4 | WNW 4 | — | — | — | W 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 4 | 2 | 2 | 1 | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 7 | NW 4 | — | — | SW 6 | SSW 6 | SSW 5 | S 6 | SSW 7 | SSW 7 | SSW 7 | SW 7 | SW 7 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 8 | SW 7 | SW 7 | SW 6 | SW 6 |
| kJ | 98 | 127 | 3 | — | — | 60 | 69 | 107 | 270 | 397 | 344 | 352 | 372 | 558 | 676 | 884 | 865 | 724 | 545 | 504 | 436 | 436 | 302 | 231 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 281 | 15 | 15 | 15 | 288 | 207 | 291 | 291 | 298 | 298 | 207 | 324 | 309 | 309 | 314 | 302 | 292 | 288 | 288 | 467 | 292 | 339 | 256 | 71 |
Best forecast wave conditions in Lleyn Peninsula | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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