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:
Swanage surfForecast / South Coast / UK
48hr Weather and Surf, issued 5 pm Thursday 11 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Swanage surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Swanage sea temperature is
11.5° C
(Which is normal for this time of year)How big are the waves at Swanage today?
The current surf forecast for Swanage at 8PM is: 1.0m 14s primary swell from a Southwest direction and 0.1m 22s secondary swell from a Southwest direction, 1.7m 6s secondary swell from a South-southwest direction (forecast issued at 05:00pm December 11). The wind direction is predicted to be cross-shore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | - | - |
| Afternoon (11 Dec) | 5.5ft (1.7m) | 6s |
| Evening (11 Dec) | 3.5ft (1.0m) | 14s |
Table - waves today at Swanage. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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 | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 14 | 14 | 14 | 16 | 15 | 15 | 19 | 19 | 19 | 18 | 18 | 18 | 17 | 16 | 16 | 15 | 14 | 10 | 10 | 10 | 13 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 211 | 223 | 395 | 630 | 564 | 3040 | 623 | 1547 | 3011 | 2789 | 2356 | 2033 | 1665 | 1465 | 1158 | 844 | 636 | 465 | 346 | 192 | 181 | 181 | 167 | 494 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | glass | glass | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 4:40AM 1.04 | 12:45PM 1.02 | 5:08AM 1.05 | 2:59PM 0.94 | 4:59AM 1.07 | |||||||||||||||||||
Low Tide / height (m) | 8:11PM 0.20 | 8:40AM 0.59 | 9:09PM 0.32 | 9:59AM 0.63 | 10:24PM 0.40 | 11:37AM 0.57 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:58 | - | - | - | - | - | - | - | 8:00 | - | - | - | - | - | - | - | 8:00 | - |
| Sunset | 4:02 | - | - | - | - | - | - | - | 4:02 | - | - | - | - | - | - | - | 4:02 | - | - | - | - | - | - | - |
 |  | |  | | |  | | | | |  | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Feels °C (?) | 5 | 5 | 5 | 5 | 5 | 5 | 8 | 6 | 6 | 7 | 8 | 7 | 7 | 7 | 8 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 |
- 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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