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Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 12 am Saturday 18 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
29.8° 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: 0.8m 12s primary swell from a South-southwest direction and 0.5m 15s secondary swell from a South direction (forecast issued at 12:00am April 18). The wind direction is predicted to be onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 2.5ft (0.8m) | 15s |
| Afternoon (18 Apr) | 3ft (0.9m) | 12s |
| Evening (18 Apr) | 3.5ft (1.1m) | 14s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | ||||||||||||||||||||||
| 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) (?) | 12 | 12 | 12 | 15 | 15 | 12 | 12 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 18 | 18 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 212 | 260 | 187 | 249 | 246 | 199 | 199 | 585 | 480 | 453 | 368 | 299 | 290 | 286 | 209 | 209 | 181 | 264 | 330 | 264 | 318 | 279 | 275 | 272 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | cross- on | on | on | on | on | on | on | glass | glass | glass | glass | cross | cross- off | cross- off | cross- off | off | off | off | off | cross- off |
High Tide / height (m) | 6:41AM 1.32 | 7:00PM 0.98 | 7:18AM 1.37 | 7:39PM 0.92 | 7:59AM 1.36 | |||||||||||||||||||
Low Tide / height (m) | 12:07AM -0.01 | 12:58PM -0.03 | 12:43AM -0.03 | 1:42PM -0.05 | 1:20AM -0.03 | 2:27PM -0.02 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:18 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - | 6:22 | - |
 |  | |  |  | | | | | |  |  | | |  | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | 3 | 2 | 1 | - | - | - | - |
| Temp. °C | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 29 | 28 |
| Feels °C (?) | 31 | 31 | 31 | 32 | 32 | 33 | 32 | 32 | 33 | 32 | 32 | 33 | 34 | 33 | 32 | 32 | 32 | 30 | 30 | 30 | 30 | 29 | 31 | 31 |
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FREE! Surf-Forecast.com widget for your website
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