Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
San Juan surfForecast / Lanzarote / Spain
48hr Weather and Surf, issued 11 am Monday 15 Dec 2025 WETForecast update in hr min s Forecast update imminent
San Juan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's San Juan sea temperature is
20.5° C
(Which is slightly warmer than usual)How big are the waves at San Juan today?
The current surf forecast for San Juan at 6PM is: 1.6m 11s primary swell from a North-northwest direction and 0.9m 14s secondary swell from a Northwest direction (forecast issued at 11:00am December 15). The wind direction is predicted to be cross-onshore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 6.5ft (2.0m) | 13s |
| Afternoon (15 Dec) | 5ft (1.6m) | 12s |
| Evening (15 Dec) | 4.5ft (1.3m) | 13s |
Table - waves today at San Juan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 14 | 12 | 11 | 13 | 14 | 14 | 14 | 13 | 8 | 8 | 10 | 11 | 12 | 14 | 14 | 14 | 14 | 13 | 13 | 12 | 13 | 12 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1363 | 1469 | 734 | 603 | 569 | 992 | 1048 | 532 | 400 | 426 | 686 | 1314 | 1969 | 2631 | 5322 | 4691 | 4181 | 3804 | 3607 | 2345 | 1523 | 1325 | 835 | 943 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | on | on | on | on | on | on | on | on |
High Tide / height (m) | 10:23AM 1.86 | 10:54PM 1.92 | 11:11AM 1.90 | 11:35PM 2.01 | 11:53AM 1.95 | 12:12AM 2.10 | ||||||||||||||||||
Low Tide / height (m) | 4:36PM 0.62 | 5:03AM 0.64 | 5:17PM 0.56 | 5:45AM 0.54 | 5:55PM 0.50 | |||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | 7:39 | - | - | - | - | - | - | - | 7:39 | - | - | - | - | - | - | - | 7:41 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:58 | - | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:58 | - | - | - | - | - |
 | | |  | | | |  |  | | |  | | | |  |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - |
| Temp. °C | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 19 | 18 | 18 | 18 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 18 | 17 | 17 | 16 |
| Feels °C (?) | 15 | 14 | 14 | 16 | 17 | 15 | 15 | 13 | 12 | 11 | 11 | 11 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 11 | 12 | 11 |
- Map Icons:
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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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