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Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
16 Day Weather and Surf, issued 12 am Monday 06 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
30.0° C
(Which is slightly warmer than usual)Best Forecast Surf Conditions for 4 Bobs this week:
The surf forecast for 4 Bobs over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Apr 06) at 1PM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.8m and 13s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at 4 Bobs in the next 16 days are 1.1m 18s and forecast to arrive on Sunday (Apr 12) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 6s period and expected on Friday (Apr 10) at 10PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1PM (Mon 6th Apr) | 4.5ft (1.4m) 8s |
| Best Surf | 7AM (Sun 12th Apr) | 2.5ft (0.8m) 20s |
| Most Powerful | 10PM (Sun 12th Apr) | 3.5ft (1.1m) 18s |
Table - best surf conditions forecast for 4 Bobs over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 62mm), heaviest during Sun night. Warm (max 28°C on Tue morning, min 24°C on Sun night). Winds decreasing (fresh winds from the WSW on Sun night, calm by Wed afternoon). | Days 3-6 Weather Summary Heavy rain (total 60mm), heaviest during Fri morning. Warm (max 28°C on Wed night, min 27°C on Wed night). Winds increasing (calm on Thu morning, fresh winds from the W by Sat morning). | |||||||||||||||||||||
Monday 06 | Tuesday 07 | Wednesday 08 | Thursday 09 | Friday 10 | Saturday 11 | Sun 12 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 14 | 8 | 13 | 12 | 12 | 12 | 11 | 13 | 13 | 12 | 16 | 15 | 15 | 13 | 13 | 14 | 14 | 13 | 12 | 20 | 18 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 290 | 220 | 202 | 172 | 131 | 117 | 85 | 141 | 201 | 256 | 181 | 215 | 360 | 239 | 286 | 268 | 471 | 350 | 260 | 455 | 463 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | off | off | off | cross- off | cross- off | off | glass | cross- off | glass | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | glass | cross- off | |
High Tide / height (m) | 8:35AM 1.14 | 8:46PM 0.76 | 9:03AM 1.07 | 9:07PM 0.68 | 9:33AM 0.99 | 9:26PM 0.61 | 10:08AM 0.92 | 9:49PM 0.55 | 11:04AM 0.85 | 12:44AM 0.50 | 12:58PM 0.82 | 2:56AM 0.57 | ||||||||||
Low Tide / height (m) | 1:55AM 0.08 | 2:49PM 0.12 | 2:23AM 0.11 | 3:25PM 0.18 | 2:54AM 0.17 | 4:05PM 0.25 | 3:27AM 0.23 | 4:56PM 0.33 | 4:08AM 0.31 | 6:06PM 0.38 | 5:10AM 0.40 | 7:43PM 0.38 | ||||||||||
Monday 06 | Tuesday 07 | Wednesday 08 | Thursday 09 | Friday 10 | Saturday 11 | Sun 12 | ||||||||||||||||
| Sunrise | - | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:22 | - | - | 6:20 | - | - | 6:20 | - | - | 6:20 | - | |
| Sunset | - | - | 6:27 | - | - | 6:27 | - | - | 6:27 | - | - | 6:25 | - | - | 6:25 | - | - | 6:25 | - | - | 6:24 | |
 |  |  |  |  |  |  | |  | | | | |  | | | | | | | | ||
Rain (mm) | 47 | 12 | 1 | 1 | - | 1 | - | - | - | 5 | 2 | 3 | 13 | 8 | 1 | 12 | 11 | 5 | 1 | 1 | - | |
| Temp. °C | 27 | 25 | 25 | 26 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | |
| Feels °C (?) | 28 | 27 | 27 | 28 | 31 | 30 | 31 | 32 | 32 | 32 | 32 | 30 | 29 | 30 | 30 | 29 | 26 | 27 | 29 | 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)
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.
Information about the 4 Bobs Surf forecast
The above surf forecast table for 4 Bobs provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at 4 Bobs can be found by selecting the local surf guide option on the grey menu. Our 4 Bobs surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (4 Bobs) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for 4 Bobs may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Mentawi Islands? If you are looking for accommodation near 4 Bobs, camping, hotels and holiday cottages in Mentawi Islands, consider staying in Padang which is 157 km (98 miles) away.
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