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4 Bobs surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 12 pm Monday 01 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
29.2° C
(Which is slightly warmer than usual)How big are the waves at 4 Bobs today?
The current surf forecast for 4 Bobs at 5PM is: 1.4m 16s primary swell from a Southwest direction and 0.5m 8s secondary swell from a South direction (forecast issued at 12:00pm December 01). The wind direction is predicted to be onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Dec) | 4ft (1.2m) | 13s |
| Afternoon (01 Dec) | 4.5ft (1.4m) | 16s |
| Evening (01 Dec) | 4.5ft (1.4m) | 16s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 01 | Tuesday 02 | Wednesday 03 | Thursday 04 | |||||||||||||||||||||
| 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 | 4 AM | 7 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 642 | 436 | 993 | 980 | 993 | 1208 | 1193 | 1147 | 953 | 915 | 902 | 902 | 902 | 834 | 846 | 752 | 752 | 752 | 667 | 606 | 589 | 581 | 485 | 471 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | on | on | on | cross- on | glass | glass | glass | glass | glass | glass | glass | glass | glass | cross- off | off | glass | glass | glass | cross | cross | cross- off | cross- off |
High Tide / height (m) | 3:15PM 1.04 | 3:23AM 0.81 | 4:03PM 1.17 | 4:22AM 0.81 | 4:50PM 1.28 | 5:16AM 0.81 | ||||||||||||||||||
Low Tide / height (m) | 9:23PM 0.29 | 9:05AM 0.15 | 10:27PM 0.18 | 9:56AM 0.10 | 11:22PM 0.07 | |||||||||||||||||||
Monday 01 | Tuesday 02 | Wednesday 03 | Thursday 04 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:05 |
| Sunset | - | - | 6:17 | - | - | - | - | - | - | - | 6:17 | - | - | - | - | - | - | - | 6:19 | - | - | - | - | - |
 | | |  |  | | |  | |  | | | | | | | | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | 1 | - | - | 1 | - | 1 | 1 | 1 | - |
| Temp. °C | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 27 |
| Feels °C (?) | 32 | 32 | 31 | 31 | 31 | 30 | 31 | 32 | 32 | 33 | 33 | 32 | 33 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 31 | 30 | 31 | 31 |
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Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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