Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
48hr Weather and Surf, issued 6 pm Friday 28 Nov 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
29.4° C
(Which is slightly warmer than usual)How big are the waves at 4 Bobs today?
The current surf forecast for 4 Bobs at 11PM is: 1.7m 16s primary swell from a Southwest direction and 0.6m 8s secondary swell from a South direction (forecast issued at 06:00pm November 28). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Nov) | - | - |
| Afternoon (28 Nov) | 5ft (1.6m) | 16s |
| Evening (28 Nov) | 5ft (1.6m) | 16s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 28 | Saturday 29 | Sunday 30 | Monday 01 | |||||||||||||||||||||
| 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) (?) | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1333 | 1317 | 1431 | 1251 | 1171 | 1140 | 1124 | 1124 | 1109 | 1109 | 928 | 915 | 915 | 810 | 731 | 711 | 671 | 651 | 642 | 569 | 451 | 517 | 642 | 436 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | glass | glass | glass | glass | glass | glass | cross- on | cross- on | cross- on | cross | cross | glass | glass | glass | cross- on | on | on | on | glass | cross- on | cross- on | on |
High Tide / height (m) | 11:29PM 0.90 | 1:20PM 0.79 | 12:52AM 0.85 | 2:23PM 0.90 | 2:13AM 0.82 | |||||||||||||||||||
Low Tide / height (m) | 5:08PM 0.41 | 6:19AM 0.25 | 6:34PM 0.43 | 7:16AM 0.23 | 8:04PM 0.39 | 8:12AM 0.20 | ||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 01 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:03 | - | - | - | - | - | - | - | 6:03 | - | - |
| Sunset | 6:16 | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - | 6:16 | - | - | - | - | - | - | - |
 |  |  | |  |  |  | |  |  | | | | | | | | | |  | | |  | | |
Rain (mm) | 1 | 2 | - | - | - | - | - | - | 1 | 1 | 1 | 2 | 3 | 1 | 1 | 2 | 1 | - | - | - | - | - | - | 2 |
| Temp. °C | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 27 |
| Feels °C (?) | 26 | 28 | 28 | 29 | 29 | 29 | 30 | 31 | 30 | 31 | 31 | 29 | 30 | 30 | 31 | 31 | 30 | 32 | 30 | 30 | 31 | 31 | 30 | 31 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
5 Reasons Why Costa Rica Is A Surfer (and Non Surfer) Paradise
With or without a surfboard, Costa Rica is a bucket list destination that has shown what a nation is capable of when nature is put first.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our 4 Bobs surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest