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Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 6 am Monday 08 Dec 2025 WIBForecast update in hr min s Forecast update imminent
4 Bobs surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's 4 Bobs sea temperature is
29.5° C
(Which is slightly warmer than usual)How big are the waves at 4 Bobs today?
The current surf forecast for 4 Bobs at 10AM is: 1.0m 16s primary swell from a Southwest direction and 0.9m 12s secondary swell from a South-southwest direction (forecast issued at 06:00am December 08). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Dec) | 3.5ft (1.0m) | 16s |
| Afternoon (08 Dec) | 3.5ft (1.0m) | 15s |
| Evening (08 Dec) | 3.5ft (1.1m) | 15s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 08 | Tuesday 09 | Wednesday 10 | Thu 11 | |||||||||||||||||||||
| 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 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 381 | 432 | 502 | 489 | 459 | 435 | 479 | 543 | 543 | 536 | 466 | 529 | 514 | 440 | 523 | 523 | 523 | 407 | 317 | 304 | 299 | 299 | 299 | 304 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | off | glass | cross | cross- on | cross- on | glass | cross | cross- off | cross- off | glass | cross | cross- off | cross | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 8:32AM 0.79 | 8:46PM 1.28 | 9:25AM 0.78 | 9:35PM 1.18 | 10:23AM 0.78 | 10:26PM 1.06 | ||||||||||||||||||
Low Tide / height (m) | 2:33AM 0.00 | 1:54PM 0.07 | 3:18AM 0.06 | 2:43PM 0.15 | 4:03AM 0.12 | 3:35PM 0.25 | ||||||||||||||||||
Monday 08 | Tuesday 09 | Wednesday 10 | Thu 11 | |||||||||||||||||||||
| Sunrise | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:07 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:21 | - | - | - | - | - | - | - | 6:21 | - | - | - | - | - | - | - | 6:22 | - | - | - |
 |  |  |  | | | |  |  | |  | | | | | | |  | | | | | | | |
Rain (mm) | 1 | - | - | 1 | 4 | 4 | 4 | 6 | 2 | - | - | 1 | 3 | 4 | 12 | 12 | 8 | 7 | 5 | 12 | 15 | 40 | 20 | 8 |
| Temp. °C | 26 | 26 | 27 | 27 | 27 | 27 | 26 | 24 | 25 | 25 | 26 | 27 | 27 | 26 | 24 | 24 | 25 | 26 | 25 | 25 | 25 | 24 | 24 | 24 |
| Feels °C (?) | 29 | 29 | 30 | 31 | 31 | 30 | 28 | 28 | 27 | 28 | 29 | 32 | 29 | 26 | 26 | 27 | 27 | 27 | 26 | 27 | 28 | 24 | 23 | 25 |
- 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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