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:
Jackals surfForecast / Simeulue Island / Indonesia
48hr Weather and Surf, issued 12 pm Monday 15 Dec 2025 WIBForecast update in hr min s Forecast update imminent
Jackals surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Jackals sea temperature is
29.1° C
(Which is normal for this time of year)How big are the waves at Jackals today?
The current surf forecast for Jackals at 7PM is: 0.5m 14s primary swell from a Southwest direction and 0.7m 7s secondary swell from a West-southwest direction, 0.6m 11s secondary swell from a South-southwest direction (forecast issued at 12:00pm December 15). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 2.5ft (0.7m) | 11s |
| Afternoon (15 Dec) | 2.5ft (0.7m) | 11s |
| Evening (15 Dec) | 1.5ft (0.5m) | 14s |
Table - waves today at Jackals. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 10 PM | 1 AM | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 11 | 14 | 14 | 14 | 13 | 18 | 18 | 18 | 13 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 123 | 123 | 91 | 103 | 99 | 123 | 225 | 225 | 255 | 255 | 252 | 309 | 395 | 386 | 386 | 437 | 427 | 477 | 612 | 702 | 693 | 657 | 631 | 940 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | cross- off | cross- off | off | off | off | glass | glass | cross- on | cross | glass | glass | cross | glass | glass | glass | glass | glass | glass | off | off | glass |
High Tide / height (m) | 4:19PM 0.49 | 4:09AM 0.31 | 4:56PM 0.52 | 5:01AM 0.30 | 5:31PM 0.54 | 5:44AM 0.29 | ||||||||||||||||||
Low Tide / height (m) | 11:21PM 0.18 | 10:01AM 0.12 | 12:02AM 0.14 | 10:37AM 0.10 | 12:37AM 0.10 | |||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:31 |
| Sunset | - | - | 6:29 | - | - | - | - | - | - | - | 6:29 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - |
 |  | |  | | | | |  |  | |  | | |  | | | | | | | | | | |
Rain (mm) | 1 | - | - | - | - | - | - | - | 1 | - | - | 1 | 3 | 4 | 2 | - | - | - | 1 | 1 | 1 | - | 1 | 3 |
| Temp. °C | 26 | 27 | 28 | 27 | 26 | 26 | 26 | 25 | 26 | 28 | 28 | 27 | 26 | 26 | 25 | 25 | 27 | 28 | 27 | 26 | 26 | 26 | 26 | 25 |
| Feels °C (?) | 31 | 31 | 31 | 30 | 29 | 29 | 29 | 28 | 30 | 32 | 31 | 30 | 31 | 30 | 28 | 29 | 31 | 32 | 31 | 30 | 30 | 30 | 30 | 29 |
- 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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