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Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 6 pm Sunday 19 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
29.9° 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 9PM is: 0.6m 17s primary swell from a South-southwest direction and 0.7m 13s secondary swell from a Southwest direction (forecast issued at 06:00pm April 19). The wind direction is predicted to be cross-onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Apr) | - | - |
| Afternoon (19 Apr) | 2ft (0.6m) | 18s |
| Evening (19 Apr) | 2ft (0.6m) | 17s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||||||
| 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 | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 18 | 18 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 20 | 19 | 18 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 209 | 209 | 181 | 264 | 330 | 264 | 258 | 279 | 275 | 272 | 372 | 367 | 321 | 357 | 347 | 312 | 239 | 295 | 276 | 267 | 248 | 373 | 480 | 418 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | glass | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross | cross- off | cross- off | off | off | cross- off | cross- off | glass | glass | glass | on | cross- on | glass |
High Tide / height (m) | 7:39PM 0.92 | 7:59AM 1.36 | 8:20PM 0.84 | 8:42AM 1.31 | 9:06PM 0.76 | 9:31AM 1.22 | ||||||||||||||||||
Low Tide / height (m) | 1:42PM -0.05 | 1:20AM -0.03 | 2:27PM -0.02 | 1:59AM -0.00 | 3:14PM 0.05 | 2:40AM 0.06 | ||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:18 | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - | - | 6:18 | - | - |
| Sunset | 6:22 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - |
 |  | | |  |  |  | | | | | | | | | | | | | | |  | | | |
Rain (mm) | - | - | - | - | 1 | 1 | - | 1 | 3 | 2 | 1 | - | 1 | - | - | - | 3 | 3 | 3 | 1 | 1 | - | 1 | 1 |
| Temp. °C | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 |
| Feels °C (?) | 33 | 33 | 32 | 32 | 33 | 32 | 32 | 31 | 31 | 31 | 32 | 32 | 31 | 30 | 31 | 31 | 31 | 32 | 31 | 32 | 31 | 31 | 32 | 32 |
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