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:
Telescopes surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 6 am Tuesday 16 Dec 2025 WIBForecast update in hr min s Forecast update imminent
Telescopes surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Telescopes sea temperature is
29.3° C
(Which is slightly warmer than usual)How big are the waves at Telescopes today?
The current surf forecast for Telescopes at 1PM is: 0.6m 18s primary swell from a South-southwest direction and 0.8m 7s secondary swell from a West direction, 0.7m 13s secondary swell from a Southwest direction (forecast issued at 06:00am December 16). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 2ft (0.6m) | 18s |
| Afternoon (16 Dec) | 2ft (0.6m) | 17s |
| Evening (16 Dec) | 2.5ft (0.7m) | 16s |
Table - waves today at Telescopes. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| 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) (?) | 18 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 216 | 211 | 211 | 209 | 302 | 274 | 271 | 271 | 381 | 421 | 477 | 471 | 471 | 459 | 574 | 551 | 543 | 536 | 536 | 529 | 407 | 390 | 323 | 261 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | cross- off | glass | glass | glass | on | glass | off | off | cross- off | cross- off | cross | cross- on | on | cross- on | cross- on | cross | cross | cross | cross | cross- on | cross- on |
High Tide / height (m) | 3:43AM 0.67 | 4:14PM 1.03 | 4:35AM 0.66 | 4:54PM 1.07 | 5:21AM 0.67 | 5:33PM 1.11 | ||||||||||||||||||
Low Tide / height (m) | 8:53AM 0.28 | 11:01PM 0.30 | 9:40AM 0.26 | 11:36PM 0.23 | 10:24AM 0.22 | 12:08AM 0.17 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| Sunrise | - | 6:09 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:24 | - | - | - |
 |  |  | | | | | |  |  |  | | |  | | | | | | | |  | | | |
Rain (mm) | 2 | - | - | - | - | 1 | 1 | 2 | - | 1 | 2 | 1 | 1 | - | 3 | 4 | 1 | - | - | 1 | - | - | - | 1 |
| Temp. °C | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 |
| Feels °C (?) | 30 | 30 | 29 | 30 | 31 | 31 | 31 | 30 | 30 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 29 | 29 | 30 | 30 | 28 | 31 | 31 | 30 |
- 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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