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:
Jimmys surfForecast / Sumatra – Mainland / Indonesia
48hr Weather and Surf, issued 6 am Wednesday 17 Dec 2025 WIBForecast update in hr min s Forecast update imminent
Jimmys surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Jimmys sea temperature is
29.3° C
(Which is slightly warmer than usual)How big are the waves at Jimmys today?
The current surf forecast for Jimmys at 1PM is: 1.1m 15s primary swell from a Southwest direction and 0.9m 8s secondary swell from a West direction (forecast issued at 06:00am December 17). The wind direction is predicted to be cross-onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 3.5ft (1.0m) | 16s |
| Afternoon (17 Dec) | 3.5ft (1.1m) | 15s |
| Evening (17 Dec) | 4.5ft (1.3m) | 15s |
Table - waves today at Jimmys. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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 | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 432 | 502 | 539 | 525 | 519 | 753 | 743 | 714 | 695 | 606 | 536 | 536 | 529 | 507 | 431 | 412 | 342 | 336 | 336 | 326 | 321 | 364 | 347 | 299 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- off | cross- on | cross- on | cross | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross | cross- off | cross- off |
High Tide / height (m) | 5:11AM 0.57 | 5:07PM 1.04 | 6:02AM 0.58 | 5:47PM 1.07 | 6:44AM 0.59 | 6:25PM 1.10 | ||||||||||||||||||
Low Tide / height (m) | 10:02AM 0.36 | 12:28AM 0.20 | 10:49AM 0.34 | 1:02AM 0.15 | 11:32AM 0.32 | |||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - | - | 5:48 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:14 | - | - | - |
 |  | |  | |  | | | |  |  | | |  | | | | |  | | | |  | | |
Rain (mm) | 5 | 2 | 2 | - | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 2 | 1 | 1 | - | - | 1 | 2 | 1 | - | - |
| Temp. °C | 24 | 24 | 24 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 27 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 28 | 28 | 28 | 26 | 25 | 25 |
| Feels °C (?) | 27 | 27 | 28 | 30 | 30 | 30 | 28 | 28 | 27 | 26 | 28 | 29 | 28 | 29 | 28 | 27 | 27 | 27 | 29 | 29 | 30 | 29 | 27 | 27 |
- 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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