Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
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Surf Forecasts:
Boa surfForecast / Timor / Indonesia
48hr Weather and Surf, issued 1 pm Wednesday 17 Dec 2025 WITAForecast update in hr min s Forecast update imminent
Boa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Boa sea temperature is
30.3° C
(Which is slightly warmer than usual)How big are the waves at Boa today?
The current surf forecast for Boa at 6PM is: 0.6m 16s primary swell from a Southwest direction and 0.7m 12s secondary swell from a Southwest direction (forecast issued at 01:00pm December 17). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (WITA) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 2.5ft (0.7m) | 12s |
| Afternoon (17 Dec) | 2ft (0.6m) | 16s |
| Evening (17 Dec) | 2.5ft (0.7m) | 16s |
Table - waves today at Boa. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 137 | 167 | 165 | 257 | 257 | 264 | 264 | 236 | 229 | 291 | 295 | 474 | 468 | 427 | 410 | 410 | 404 | 346 | 341 | 322 | 304 | 250 | 246 | 242 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- on | cross | cross- off | cross- on | cross- on | glass | glass | glass | cross- on | on | glass | cross | cross | glass | cross- on | cross- on | cross- on | glass |
High Tide / height (m) | 9:00PM 2.70 | 10:15AM 2.21 | 9:39PM 2.81 | 10:49AM 2.31 | 10:15PM 2.91 | |||||||||||||||||||
Low Tide / height (m) | 2:49PM 1.28 | 3:55AM 0.55 | 3:32PM 1.20 | 4:29AM 0.40 | 4:10PM 1.12 | 5:03AM 0.28 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 |
| Sunset | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - |
 | | |  |  |  | | | | |  | |  | | |  | | | | | | |  | | |
Rain (mm) | 7 | 1 | 1 | - | 4 | 6 | 9 | 3 | 3 | 4 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | 2 |
| Temp. °C | 28 | 29 | 29 | 29 | 28 | 28 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 |
| Feels °C (?) | 31 | 32 | 31 | 32 | 31 | 31 | 28 | 28 | 30 | 28 | 28 | 30 | 30 | 32 | 30 | 31 | 31 | 32 | 32 | 33 | 31 | 31 | 31 | 32 |
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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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