Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
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Surf Forecasts:
The Boiler surfForecast / Wales – Gower / UK
48hr Weather and Surf, issued 11 pm Tuesday 16 Dec 2025 GMTForecast update in hr min s Forecast update imminent
The Boiler surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Boiler sea temperature is
10.1° C
(Which is slightly cooler than normal)How big are the waves at The Boiler today?
The current surf forecast for The Boiler at 2AM is: 1.3m 14s primary swell from a West-southwest direction (forecast issued at 11:00pm December 16). The wind direction is predicted to be onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 3.5ft (1.0m) | 13s |
| Afternoon (17 Dec) | 10ft (3.0m) | 10s |
| Evening (17 Dec) | 10ft (3.0m) | 11s |
Table - waves today at The Boiler. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| 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 | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 14 | 13 | 8 | 10 | 11 | 11 | 11 | 11 | 21 | 20 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 606 | 589 | 640 | 471 | 356 | 733 | 1472 | 2014 | 1833 | 1309 | 961 | 4701 | 4689 | 4169 | 4042 | 4952 | 5314 | 4864 | 5311 | 4588 | 4605 | 4493 | 3500 | 2911 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | off | cross- on | cross- on | cross- off | cross | cross- on | cross | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 4:22AM 8.17 | 4:39PM 8.23 | 5:04AM 8.47 | 5:20PM 8.43 | 5:42AM 8.70 | 5:58PM 8.58 | ||||||||||||||||||
Low Tide / height (m) | 10:04PM 2.66 | 10:22AM 2.55 | 10:47PM 2.44 | 11:03AM 2.33 | 11:25PM 2.26 | 11:42AM 2.16 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:15 | - | - | - | - | - | - | - | 8:17 | - | - | - | - | - | - | - | 8:18 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:07 | - | - | - | - | - | - | - | 4:07 | - | - | - | - | - | - | - | 4:07 | - |
 | |  |  |  | | |  | | | | | |  |  | |  | | | |  |  | | | |
Rain (mm) | - | - | - | - | 1 | 4 | 5 | 2 | 5 | 2 | - | - | 3 | 16 | 6 | 1 | 1 | - | 1 | 1 | 1 | - | 1 | 1 |
| Temp. °C | 8 | 8 | 7 | 8 | 9 | 9 | 10 | 11 | 12 | 11 | 11 | 11 | 10 | 9 | 10 | 10 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 9 |
| Feels °C (?) | 7 | 4 | 1 | 1 | 1 | 0 | 1 | 2 | 4 | 6 | 7 | 7 | 6 | 6 | 6 | 5 | 2 | 1 | 1 | 1 | 2 | 2 | 3 | 3 |
- 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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