Surf Forecasts:
How big are the waves at 4 Bobs today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 7ft (2.2m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 6.5ft (2.0m), 15s period with SSW swell.
- Evening surf: Evening surf (20 Sep, local time) - 6.5ft (2.0m), 15s period with SSW swell.
The current surf forecast for 4 Bobs at 5AM is: 2.2m 16s primary swell from a Southwest direction and 0.2m 8s secondary swell from a West-northwest direction, 1.2m 5s secondary swell from a South-southeast direction (forecast issued at 12:00am September 20). The wind direction is predicted to be cross-onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 7ft (2.2m) | 16s |
| Afternoon (20 Sep) | 6.5ft (2.0m) | 15s |
| Evening (20 Sep) | 6.5ft (2.0m) | 15s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 26mm), heaviest during Sat night. Warm (max 28°C on Mon afternoon, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||||||
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 | 4 PM | 7 PM | 10 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 13 | S 13 | SSW 13 | S 13 | SSW 18 | SSW 18 | SSW 18 | SSW 18 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2320 | 2291 | 2291 | 2151 | 2151 | 1730 | 1809 | 1671 | 1626 | 1752 | 1667 | 1475 | 1403 | 1284 | 1359 | 1179 | 1138 | 1003 | 451 | 835 | 616 | 759 | 2411 | 1471 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 00:08AM0.82m | 9:40AM0.47m | 1:26PM0.48m | 2:00AM0.81m | 3:21PM0.54m | 3:18AM0.86m | 4:17PM0.64m | |||||||||||||||||
Low Tide | 6:32AM0.43m | 11:05AM0.47m | 5:25PM0.38m | 10:30AM0.40m | 7:07PM0.43m | 10:29AM0.34m | 8:55PM0.40m | |||||||||||||||||
 | |  |  | | |  | | | | | | | | | | | | | | | |  | | |
 | — | 6:13 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:17 | — | — |
mm | 1 | 5 | 2 | — | 1 | — | — | 1 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — |
Temp °C | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 27 | 26 | 26 | 27 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 27 | 27 | 28 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 30 | 30 | 31 | 29 | 29 | 30 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 13 | S 13 | SSW 13 | S 13 | SW 13 | S 12 | SSW 18 | SSW 18 |
| kJ | 2320 | 2291 | 2291 | 2151 | 2151 | 1730 | 1809 | 1671 | 1626 | 1752 | 1667 | 1475 | 1403 | 1284 | 1359 | 1179 | 1138 | 1003 | 451 | 835 | 364 | 690 | 2411 | 1471 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 7 | SSW 16 | WNW 7 | SSE 7 | SSE 7 | — | S 21 | SW 21 | SW 20 | SSW 20 | SSW 19 | SW 19 | SSW 19 | SSW 18 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | SSW 12 | S 12 |
| kJ | 11 | 6 | 5 | 5 | 5 | 273 | 5 | 75 | 74 | — | 9 | 17 | 16 | 38 | 37 | 94 | 137 | 195 | 312 | 554 | 616 | 759 | 268 | 472 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | WNW 7 | — | WNW 7 | WNW 7 | S 21 | S 21 | SW 21 | SW 20 | — | WNW 9 | WNW 9 | WNW 9 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | SSE 8 | WNW 8 |
| kJ | — | — | — | — | — | 5 | — | 5 | 5 | 9 | 9 | 17 | 15 | — | 7 | 8 | 8 | 3 | 3 | 3 | 3 | 3 | 83 | 6 |
Wind waves Height (m) Direction Period (s) | SSE 5 | SSE 5 | SE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | — | — | SSE 7 | — | — | — | SSE 8 | — | — | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | — | SSE 8 |
| kJ | 71 | 71 | 82 | 101 | 93 | 75 | 80 | — | — | 59 | — | — | — | 123 | — | — | 151 | 155 | 159 | 128 | 127 | 102 | — | 130 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 7 | 7 | 7 | 7 | 389 | 103 | 7 | 7 | 7 | 2 | 2 | 7 | 7 | 7 | 7 | 11 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
Best forecast wave conditions in Mentawi Islands | ||||||||||||||||||||||||
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