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Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 12 am Wednesday 15 Apr 2026 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
29.7° C
(Which is normal for this time of year)How big are the waves at 4 Bobs today?
The current surf forecast for 4 Bobs at 4AM is: 1.3m 14s primary swell from a Southwest direction and 0.6m 8s secondary swell from a South direction, 0.4m 6s secondary swell from a West direction (forecast issued at 12:00am April 15). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Apr) | 4ft (1.2m) | 14s |
| Afternoon (15 Apr) | 3.5ft (1.1m) | 14s |
| Evening (15 Apr) | 3.5ft (1.1m) | 13s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||||||||||||
| 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 | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 667 | 667 | 658 | 658 | 573 | 485 | 451 | 386 | 380 | 331 | 589 | 597 | 663 | 532 | 517 | 509 | 465 | 458 | 451 | 382 | 321 | 273 | 314 | 212 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | off | off | cross- off | off | off | glass | off | cross- off | glass | glass | glass | glass | cross- on | on | on | on | cross- on | cross- on | glass | on | on |
High Tide / height (m) | ||||||||||||||||||||||||
Low Tide / height (m) | ||||||||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:20 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:23 | - |
 | | |  | | | |  | | |  |  |  | | | | | | | | | | |  | |
Rain (mm) | 3 | 5 | 5 | 2 | 2 | 4 | 1 | - | - | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | - | - | - | - |
| Temp. °C | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 28 |
| Feels °C (?) | 31 | 30 | 31 | 30 | 29 | 29 | 30 | 30 | 31 | 31 | 31 | 32 | 33 | 32 | 32 | 31 | 31 | 32 | 30 | 31 | 31 | 32 | 32 | 31 |
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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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