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Surf Forecasts:
4 Bobs surfForecast / Mentawi Islands / Indonesia
16 Day Weather and Surf, issued 6 am Thursday 21 May 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
30.2° C
(Which is normal for this time of year)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 Thursday (May 21) at 4PM. The primary swell is predicted to be 1.1m and 15s period with a secondary swell of 0.9m and 10s. 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 2.2m 17s and forecast to arrive on Wednesday (May 27) at 10PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Sunday (May 24) at 1PM.
| Wave Type | Time (WIB) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Thu 21st May) | 3.5ft (1.1m) 15s |
| Best Surf | 7AM (Wed 27th May) | 5ft (1.6m) 14s |
| Most Powerful | 10PM (Wed 27th May) | 7ft (2.2m) 17s |
Table - best surf conditions forecast for 4 Bobs over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 21mm), heaviest during Thu morning. Warm (max 29°C on Sat morning, min 27°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 14mm), heaviest on Mon night. Warm (max 29°C on Sun afternoon, min 27°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | Monday 25 | Tuesday 26 | Wednesday 27 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SSW 14 | SW 14 | SSW 13 | SW 13 | SSW 12 | SSW 15 | SW 13 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SSW 18 | SW 16 | |
550 | 557 | 674 | 685 | 773 | 838 | 548 | 663 | 465 | 458 | 394 | 184 | 150 | 230 | 834 | 1044 | 1224 | 1074 | 915 | 902 | 2408 | |
Wind (km/h) | |||||||||||||||||||||
off | cross-off | cross-off | off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross-off | cross-off | glassy | off | off | cross-off | glassy | cross-off | cross | glassy | |
High Tide | 10:10PM0.73m | 10:24AM1.13m | 11:21PM0.73m | 11:27AM1.02m | 00:38AM0.77m | 12:37PM0.92m | 1:50AM0.84m | 1:48PM0.85m | 2:51AM0.92m | 2:53PM0.80m | 3:41AM1.00m | 3:50PM0.78m | |||||||||
Low Tide | 4:02PM0.11m | 3:25AM0.19m | 4:57PM0.17m | 4:26AM0.30m | 5:56PM0.23m | 5:43AM0.39m | 6:57PM0.26m | 7:20AM0.43m | 7:55PM0.27m | 8:59AM0.41m | 8:44PM0.26m | 10:10AM0.35m | 9:26PM0.25m | ||||||||
 |  |  | | |  |  | | | | | | |  | | | |  | | | | |
 | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — |
5 | — | 4 | 4 | 3 | 1 | — | — | 4 | 1 | 1 | 3 | — | — | 6 | 1 | 2 | — | — | — | — | |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 29 | 29 | 28 |
30 | 32 | 31 | 31 | 31 | 30 | 31 | 31 | 31 | 31 | 31 | 30 | 32 | 32 | 32 | 33 | 33 | 32 | 33 | 33 | 32 | |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SSW 14 | SW 14 | SSW 13 | SW 13 | SSW 12 | SW 12 | SW 13 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 16 |
 kJ | 550 | 557 | 674 | 685 | 773 | 838 | 548 | 663 | 465 | 458 | 394 | 184 | 144 | 230 | 834 | 1044 | 1224 | 1074 | 915 | 902 | 2408 |
Swell 2 Height (m) Direction Period (s) | S 11 | S 10 | S 9 | S 8 | S 9 | SSE 9 | WNW 7 | W 7 | WNW 8 | S 11 | WNW 8 | WNW 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | SSW 19 | SSW 18 | WNW 8 |
| kJ | 182 | 146 | 111 | 50 | 76 | 26 | 40 | 43 | 48 | 2 | 45 | 49 | 73 | 73 | 70 | 57 | 38 | 37 | 657 | 854 | 28 |
Swell 3 Height (m) Direction Period (s) | W 16 | NW 7 | W 15 | SSE 9 | WNW 7 | SSW 8 | S 8 | SSE 8 | S 8 | W 13 | S 7 | SW 14 | SSW 15 | SSW 16 | SW 11 | S 8 | S 8 | S 8 | WNW 8 | WNW 8 | SSE 8 |
| kJ | 5 | 16 | 4 | 16 | 18 | 22 | 34 | 21 | 12 | 4 | 10 | 102 | 150 | 173 | 58 | 34 | 36 | 35 | 26 | 27 | 21 |
Wind waves Height (m) Direction Period (s) | NW 7 | — | NW 7 | NW 7 | NW 7 | WNW 7 | NNW 3 | — | NNW 3 | NW 8 | N 4 | NNW 4 | NNW 3 | — | NNW 3 | — | — | — | — | — | — |
| kJ | 7 | — | 12 | 11 | 11 | 34 | 4 | — | 4 | 69 | 4 | 4 | 2 | — | 2 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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