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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:
Porth Nobla surfForecast / Wales – Anglesy / UK
48hr Weather and Surf, issued 5 am Saturday 20 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Porth Nobla surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porth Nobla sea temperature is
10.6° C
(Which is slightly warmer than usual)How big are the waves at Porth Nobla today?
The current surf forecast for Porth Nobla at 9AM is: 2.3m 7s primary swell from a South-southwest direction and 1.4m 8s secondary swell from a Southwest direction (forecast issued at 05:00am December 20). The wind direction is predicted to be cross-shore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Dec) | 7.5ft (2.3m) | 7s |
| Afternoon (20 Dec) | 8ft (2.5m) | 8s |
| Evening (20 Dec) | 7ft (2.1m) | 10s |
Table - waves today at Porth Nobla. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 20 | Sunday 21 | Monday 22 | Tue 23 | |||||||||||||||||||||
| 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 | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 8 | 8 | 9 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 423 | 499 | 558 | 640 | 787 | 623 | 821 | 711 | 784 | 416 | 253 | 154 | 121 | 88 | 69 | 44 | 44 | 31 | 31 | 23 | 14 | 14 | 20 | 13 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | off | off | cross- off | off | cross- off | cross- off | cross- off | on | cross- on | glass | cross- off | glass |
High Tide / height (m) | 9:18AM 3.77 | 9:38PM 3.57 | 9:53AM 3.83 | 10:13PM 3.55 | 10:27AM 3.85 | 10:46PM 3.49 | ||||||||||||||||||
Low Tide / height (m) | 3:43AM 0.62 | 4:06PM 0.49 | 4:18AM 0.58 | 4:43PM 0.45 | 4:54AM 0.57 | 5:21PM 0.45 | ||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tue 23 | |||||||||||||||||||||
| Sunrise | - | - | 8:29 | - | - | - | - | - | - | - | 8:30 | - | - | - | - | - | - | - | 8:30 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:00 | - | - | - | - | - | - | - | 4:01 | - | - | - |
 | |  | | |  | | | | |  |  | | |  | | | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 4 | 2 | - | - | - | - | - | - | - |
| Temp. °C | 9 | 9 | 8 | 9 | 9 | 8 | 8 | 10 | 9 | 9 | 8 | 9 | 9 | 8 | 8 | 9 | 9 | 9 | 8 | 10 | 9 | 9 | 9 | 9 |
| Feels °C (?) | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 2 | 4 | 5 | 5 | 6 | 6 | 4 | 3 | 3 | 5 | 5 | 5 | 7 | 6 | 7 | 7 | 8 |
- 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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