Surf Forecasts:
4 Bobs surf forecast from 13 Sep 2026:
- Best quality surf: Saturday 19 Sep, 10AM (local time) - 4.5ft (1.4m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 19 Sep, 10PM (local time) - 6.5ft (2.0m), 16s period, SSW swell with 2,136 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 10AM (local time) - 4.5ft (1.4m), 18s period with SW swell.
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 Saturday (Sep 19) at 10AM. The primary swell is predicted to be 1.4m and 18s period with a secondary swell of 1.1m and 13s. Another secondary swell of 1.1m and 7s is also forecast. 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 2.0m 16s and forecast to arrive on Saturday (Sep 19) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Sat 19th Sep) | 4.5ft (1.4m) 18s |
| Best Surf | 10AM (Sat 19th Sep) | 4.5ft (1.4m) 18s |
| Most Powerful | 10PM (Sat 19th Sep) | 6.5ft (2.0m) 16s |
Table - best surf conditions forecast for 4 Bobs over the next 16 days.
Short Range ForecastModerate rain (total 16mm), heaviest on Tue night. Warm (max 28°C on Mon morning, min 26°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 76mm), heaviest during Sat morning. Warm (max 27°C on Wed night, min 23°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SW 14 | SW 18 | SW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1822 | 2007 | 1907 | 1550 | 1358 | 1126 | 1072 | 1191 | 1114 | 1356 | 1379 | 1126 | 807 | 701 | 581 | 1124 | 1697 | 2058 | 2007 | 1699 | 1822 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | on | cross-off | on | glassy | cross-on | on | cross-on |
High Tide | 8:01AM1.03m | 8:23PM1.20m | 8:32AM0.93m | 8:55PM1.15m | 9:01AM0.82m | 9:28PM1.07m | 9:26AM0.72m | 10:03PM0.98m | 9:46AM0.62m | 10:47PM0.89m | 9:54AM0.54m | 00:08AM0.82m | 9:40AM0.47m | 1:26PM0.48m | 2:00AM0.81m | ||||||
Low Tide | 1:47PM0.02m | 2:25AM0.09m | 2:14PM0.05m | 3:00AM0.15m | 2:42PM0.09m | 3:36AM0.22m | 3:11PM0.15m | 4:17AM0.29m | 3:44PM0.22m | 5:10AM0.37m | 4:24PM0.30m | 6:32AM0.43m | 5:25PM0.38m | ||||||||
 | |  |  | |  | |  |  | | | | | | | |  |  | | | | |
 | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | 6:21 | — | — | 6:21 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:19 | — | — | 6:19 | — |
mm | — | — | 4 | 1 | — | 8 | 3 | — | — | — | — | — | 1 | 1 | 24 | 48 | 2 | 6 | 1 | 2 | 13 |
Temp °C | 28 | 28 | 27 | 27 | 28 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 24 | 25 | 25 | 27 | 27 | 27 |
Feels °C | 29 | 30 | 29 | 30 | 30 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 29 | 28 | 30 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SW 14 | SW 18 | SW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 |
| kJ | 1822 | 2007 | 1907 | 1550 | 1358 | 1126 | 1072 | 1191 | 1114 | 1356 | 1379 | 1126 | 807 | 701 | 581 | 1124 | 1697 | 2058 | 2007 | 1699 | 1822 |
Swell 2 Height (m) Direction Period (s) | W 17 | — | — | SSE 8 | W 10 | SSW 21 | SW 19 | SW 19 | SW 18 | WNW 10 | W 10 | W 9 | W 10 | SSE 5 | SW 18 | SW 13 | SW 13 | SSE 7 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 23 | — | — | 99 | 2 | 45 | 133 | 133 | 375 | 34 | 47 | 43 | 71 | 51 | 388 | 406 | 245 | 147 | 7 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 15 | W 15 | W 9 | W 8 | W 8 | W 8 | W 15 | — | WNW 13 | SW 20 | W 10 | WNW 9 | WNW 8 | WNW 8 | WNW 9 | — | — | — |
| kJ | — | — | — | 5 | 4 | 2 | 5 | 5 | 5 | 4 | — | 17 | 98 | 47 | 27 | 27 | 13 | 15 | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 7 | SSE 8 | SSE 8 | — | SSE 8 | SSE 5 | SSE 6 | SSE 7 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 5 | — | SSE 7 | SSE 7 | SSE 7 | — | SSE 8 | SSE 8 | — |
| kJ | 147 | 151 | 131 | — | 83 | 75 | 131 | 148 | 77 | 82 | 85 | 90 | 66 | — | 96 | 99 | 121 | — | 163 | 168 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 321 | 7 | 7 | 489 | 389 | 321 | 321 | 155 | 0 | 7 | 0 | 7 | 7 | 7 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
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.
Nearest