
Surf Forecasts:
4 Bobs surf forecast from 8 Aug 2026:
- Best quality surf: Friday 14 Aug, 1AM (local time) - 6.5ft (2.0m), 17s period, S swell with glassy winds.
- Most powerful swell: Tuesday 11 Aug, 1PM (local time) - 8ft (2.5m), 19s period, SSW swell with 4,830 kJ wave energy.
- Next surfable swell (1★+): Friday 14 Aug, 1AM (local time) - 6.5ft (2.0m), 17s period with S 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 Friday (Aug 14) at 1AM. The primary swell is predicted to be 2.0m and 17s period with a secondary swell of 1.4m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at 4 Bobs in the next 16 days are 2.5m 19s and forecast to arrive on Tuesday (Aug 11) at 1PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 14th Aug) | 6.5ft (2.0m) 17s |
| Best Surf | 1AM (Fri 14th Aug) | 6.5ft (2.0m) 17s |
| Most Powerful | 1PM (Tue 11th Aug) | 8ft (2.5m) 19s |
Table - best surf conditions forecast for 4 Bobs over the next 16 days.
Short Range ForecastLight rain (total 8mm), mostly falling on Sat night. Warm (max 29°C on Sat afternoon, min 27°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 24mm), heaviest during Wed morning. Warm (max 28°C on Tue afternoon, min 27°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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) | SSW 16 | SSW 15 | SSW 16 | S 16 | S 15 | SSW 14 | S 20 | S 18 | S 17 | S 17 | S 16 | S 16 | S 16 | S 16 | S 14 | S 19 | S 17 | S 16 | S 15 | S 14 |
Wave Graph | ||||||||||||||||||||
2379 | 2061 | 2007 | 2355 | 1739 | 1363 | 2207 | 2890 | 3434 | 3683 | 2573 | 2036 | 1977 | 1788 | 1431 | 1762 | 2344 | 2824 | 2465 | 1818 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | on | cross-on | on | glassy | cross-on | on | cross-on |
High Tide | 2:36AM1.05m | 3:18PM0.57m | 3:52AM1.12m | 4:36PM0.65m | 4:54AM1.21m | 5:32PM0.75m | 5:46AM1.27m | 6:20PM0.86m | 6:32AM1.31m | 7:03PM0.97m | 7:14AM1.30m | 7:43PM1.05m | ||||||||
Low Tide | 6:54PM0.23m | 9:34AM0.30m | 8:19PM0.24m | 10:51AM0.21m | 9:43PM0.20m | 11:42AM0.12m | 10:52PM0.15m | 12:22PM0.05m | 11:50PM0.09m | 12:58PM0.01m | 00:40AM0.06m | 1:31PM-0.01m | 1:26AM0.06m | |||||||
— | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | |
6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — | — | 6:29 | — | |
mm | — | 7 | 1 | — | — | — | — | — | — | — | 3 | 5 | 2 | 6 | 2 | — | 4 | 2 | — | 6 |
Temp °C | 29 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 28 | 28 | 28 | 27 | 28 | 27 |
Feels °C | 32 | 29 | 28 | 28 | 27 | 29 | 29 | 30 | 31 | 31 | 31 | 30 | 31 | 30 | 32 | 31 | 32 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 16 | S 16 | S 15 | SSW 14 | S 20 | S 18 | S 17 | S 17 | S 16 | S 16 | S 16 | S 16 | S 14 | S 12 | S 17 | S 16 | S 15 | S 14 |
2379 | 2061 | 2007 | 2355 | 1739 | 1363 | 2207 | 2890 | 3434 | 3683 | 2573 | 2036 | 1977 | 1788 | 1431 | 675 | 2344 | 2824 | 2465 | 1818 | |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | S 21 | SSW 14 | S 13 | SSW 19 | WNW 8 | SW 18 | WNW 8 | S 21 | S 19 | S 18 | S 19 | S 10 | SSW 22 | SW 19 | SW 16 |
61 | 44 | 44 | 30 | 32 | 1085 | 1001 | 799 | 1004 | 14 | 455 | 14 | 79 | 273 | 784 | 1762 | 426 | 91 | 179 | 196 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 26 | S 24 | SSW 24 | SSW 23 | SSW 21 | WNW 8 | WNW 8 | SSW 13 | W 20 | WNW 8 | WNW 10 | WNW 10 | SW 15 | WNW 11 | WNW 11 | WNW 11 | SSW 19 |
— | — | — | 14 | 97 | 368 | 207 | 584 | 14 | 27 | 17 | 7 | 7 | 9 | 9 | 77 | 11 | 12 | 12 | 210 | |
Wind waves Height (m) Direction Period (s) | — | SE 4 | SE 5 | SSE 6 | — | — | — | — | — | — | — | — | — | — | S 12 | — | — | — | — | — |
— | 12 | 69 | 55 | — | — | — | — | — | — | — | — | — | — | 649 | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 7 | 7 | 7 | 321 | 131 | 7 | 7 | 7 | 7 | 103 | 7 | 11 | 11 | 103 | 11 | 103 | 0 | 11 | 7 | 7 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||
Best forecast wave conditions in Indonesia | ||||||||||||||||||||
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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.











