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:
Mongrels surfForecast / Landes / France
48hr Weather and Surf, issued 6 am Thursday 18 Dec 2025 CETForecast update in hr min s Forecast update imminent
Mongrels surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mongrels sea temperature is
14.4° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Mongrels today?
The current surf forecast for Mongrels at 8AM is: 1.8m 13s primary swell from a West-northwest direction and 0.5m 26s secondary swell from a West-northwest direction (forecast issued at 06:00am December 18). The wind direction is predicted to be cross-offshore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Dec) | 6ft (1.8m) | 13s |
| Afternoon (18 Dec) | 11ft (3.5m) | 21s |
| Evening (18 Dec) | 15ft (4.5m) | 19s |
Table - waves today at Mongrels. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| 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 | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 24 | 22 | 21 | 20 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1137 | 995 | 1262 | 6185 | 14475 | 15943 | 14991 | 14836 | 11661 | 10429 | 9848 | 9463 | 8823 | 8218 | 7740 | 7372 | 6921 | 5732 | 4957 | 4081 | 3319 | 2518 | 2002 | 1893 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross | cross | cross- off | cross- on | cross- on | cross- on | glass | glass | glass | cross- off | off | off | off | cross- off | cross- on | cross | cross | cross- on | cross | cross | cross- on |
High Tide / height (m) | 3:15AM 3.26 | 3:37PM 3.20 | 3:51AM 3.37 | 4:13PM 3.27 | 4:27AM 3.46 | 4:48PM 3.31 | ||||||||||||||||||
Low Tide / height (m) | 9:19AM 0.69 | 9:33PM 0.71 | 9:57AM 0.59 | 10:10PM 0.63 | 10:35AM 0.52 | 10:46PM 0.59 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| Sunrise | - | - | 8:33 | - | - | - | - | - | - | - | 8:33 | - | - | - | - | - | - | - | 8:34 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:30 | - | - | - | - | - | - | - | 5:30 | - | - | - | - | - | - | - | 5:30 | - | - | - |
 | |  | |  |  | | | | |  | | | | | | | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - |
| Temp. °C | 14 | 13 | 14 | 16 | 17 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 12 | 12 | 13 | 15 | 13 | 12 | 12 |
| Feels °C (?) | 11 | 9 | 11 | 11 | 13 | 12 | 13 | 12 | 12 | 13 | 12 | 12 | 11 | 10 | 10 | 11 | 9 | 11 | 11 | 11 | 12 | 10 | 8 | 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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