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:
St Agnes surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 11 am Saturday 20 Dec 2025 GMTForecast update in hr min s Forecast update imminent
St Agnes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's St Agnes sea temperature is
12.0° C
(Which is slightly warmer than usual)How big are the waves at St Agnes today?
The current surf forecast for St Agnes at 6PM is: 3.5m 11s primary swell from a Southwest direction and 1.9m 12s secondary swell from a West direction (forecast issued at 11:00am December 20). The wind direction is predicted to be offshore and the swell rating is 11.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Dec) | 6ft (1.9m) | 13s |
| Afternoon (20 Dec) | 11ft (3.5m) | 12s |
| Evening (20 Dec) | 11ft (3.5m) | 12s |
Table - waves today at St Agnes. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 12 | 11 | 12 | 12 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1264 | 1121 | 2919 | 2493 | 3413 | 3095 | 10063 | 9840 | 8899 | 7542 | 6633 | 5255 | 3935 | 3064 | 2326 | 1822 | 1401 | 1121 | 927 | 657 | 565 | 546 | 449 | 358 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross |
High Tide / height (m) | 5:22PM 5.61 | 5:40AM 5.82 | 5:58PM 5.65 | 6:16AM 5.87 | 6:34PM 5.65 | |||||||||||||||||||
Low Tide / height (m) | 11:25AM 0.96 | 11:39PM 0.94 | 12:02PM 0.88 | 12:15AM 0.89 | 12:38PM 0.87 | 12:50AM 0.90 | ||||||||||||||||||
Saturday 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| Sunrise | 8:17 | - | - | - | - | - | - | - | 8:17 | - | - | - | - | - | - | - | 8:18 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:19 | - | - | - | - | - | - | - | 4:19 | - | - | - | - | - | - | - | 4:19 | - | - | - | - | - |
 |  |  |  |  |  |  | | | | | | | | |  | | | | | | | | | |
Rain (mm) | - | - | 2 | 5 | - | - | - | - | 1 | - | 1 | 1 | 1 | 1 | 2 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 9 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 9 | 10 | 9 | 8 | 8 |
| Feels °C (?) | 1 | 1 | 1 | 3 | 2 | 4 | 4 | 4 | 5 | 4 | 5 | 5 | 6 | 5 | 8 | 7 | 7 | 7 | 7 | 5 | 7 | 5 | 5 | 5 |
- 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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