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:
Treasure Island surfForecast / Banyak Islands / Indonesia
48hr Weather and Surf, issued 12 am Friday 12 Dec 2025 WIBForecast update in hr min s Forecast update imminent
Treasure Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Treasure Island sea temperature is
29.5° C
(Which is slightly warmer than usual)How big are the waves at Treasure Island today?
The current surf forecast for Treasure Island at 4AM is: 0.9m 13s primary swell from a Southwest direction and 0.9m 7s secondary swell from a Southwest direction (forecast issued at 12:00am December 12). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 3ft (0.9m) | 13s |
| Afternoon (12 Dec) | 2.5ft (0.8m) | 13s |
| Evening (12 Dec) | 2.5ft (0.7m) | 12s |
Table - waves today at Treasure Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| 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 | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 257 | 257 | 253 | 249 | 241 | 238 | 190 | 187 | 152 | 118 | 114 | 114 | 114 | 89 | 87 | 68 | 68 | 67 | 79 | 94 | 92 | 137 | 115 | 172 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | glass | glass | glass | glass | off | off | off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | glass | cross | cross | cross | cross | glass | off | glass |
High Tide / height (m) | 11:09PM 0.59 | 12:28PM 0.46 | 12:06AM 0.52 | 1:46PM 0.51 | 1:15AM 0.46 | 2:51PM 0.56 | ||||||||||||||||||
Low Tide / height (m) | 6:08AM 0.18 | 5:49PM 0.31 | 7:00AM 0.19 | 8:03PM 0.33 | 7:50AM 0.19 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:24 | - | - | - | - | - | - | - | 6:24 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:23 | - |
 |  | |  |  |  | | | | | | | | | | |  | | | |  | | | | |
Rain (mm) | 5 | 5 | 5 | 3 | 3 | 1 | 2 | 2 | 4 | 5 | 16 | 48 | 33 | 3 | 1 | 1 | - | 2 | 1 | 1 | - | 1 | 2 | 5 |
| Temp. °C | 25 | 25 | 24 | 24 | 25 | 25 | 26 | 27 | 26 | 26 | 24 | 24 | 24 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 |
| Feels °C (?) | 28 | 29 | 28 | 28 | 29 | 28 | 29 | 30 | 28 | 28 | 27 | 28 | 28 | 28 | 27 | 29 | 30 | 29 | 28 | 29 | 31 | 31 | 30 | 31 |
- 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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