Surf Forecasts:
How big are the waves at 4 Bobs today (20 Sep):
- Afternoon surf: Afternoon surf (20 Sep, local time) - 6ft (1.9m), 17s period with SW swell.
- Evening surf: Evening surf (20 Sep, local time) - 7ft (2.2m), 16s period with SW swell.
The current surf forecast for 4 Bobs at 12AM is: 2.2m 16s primary swell from a Southwest direction and 0.3m 8s secondary swell from a West-northwest direction, 1.2m 5s secondary swell from a South-southeast direction (forecast issued at 06:00pm September 19). The wind direction is predicted to be cross-onshore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | - | - |
| Afternoon (20 Sep) | 6ft (1.9m) | 17s |
| Evening (20 Sep) | 7ft (2.2m) | 16s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 39mm), heaviest during Sat afternoon. Warm (max 28°C on Mon afternoon, min 26°C on Sat afternoon). Wind will be generally light. | |||||||||||||||||||
Sat 19 | Sunday 20 | Monday 21 | |||||||||||||||||
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 17 | SW 16 | SW 16 | 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 |
Wave Graph  | |||||||||||||||||||
 kJ | 1961 | 2498 | 2379 | 2320 | 2291 | 2291 | 2151 | 2151 | 1730 | 1809 | 1671 | 1626 | 1752 | 1667 | 1475 | 1403 | 1325 | 1327 | 1308 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on | on | cross-on |
High Tide | 00:08AM0.82m | 9:40AM0.47m | 1:26PM0.48m | 2:00AM0.81m | 3:21PM0.54m | ||||||||||||||
Low Tide | 4:24PM0.30m | 6:32AM0.43m | 11:05AM0.47m | 5:25PM0.38m | 10:30AM0.40m | 7:07PM0.43m | |||||||||||||
 |  |  | | | | |  | | | | | | | |  | |  | | |
 | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | 5 | 5 | — | 2 | 4 | 2 | 1 | — | — | — | 1 | 4 | 4 | 5 | 2 | — | — | — | 1 |
Temp °C | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 |
Feels °C | 28 | 29 | 27 | 28 | 27 | 27 | 27 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 16 | SW 16 | 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 | SW 19 |
| kJ | 1961 | 2498 | 2379 | 2320 | 2291 | 2291 | 2151 | 2151 | 1730 | 1809 | 1671 | 1626 | 1752 | 1667 | 1475 | 1403 | 1325 | 1327 | 94 |
Swell 2 Height (m) Direction Period (s) | SW 13 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 7 | SSW 16 | WNW 7 | WNW 7 | — | — | S 21 | SW 21 | SW 20 | SSW 20 | SSW 19 | WNW 9 |
| kJ | 388 | 12 | 11 | 11 | 6 | 5 | 5 | 5 | 273 | 5 | 5 | — | — | 9 | 17 | 16 | 38 | 37 | 8 |
Swell 3 Height (m) Direction Period (s) | WNW 8 | W 15 | — | — | — | — | — | — | WNW 7 | — | — | — | S 21 | S 21 | SW 21 | SW 20 | — | WNW 9 | — |
| kJ | 12 | 4 | — | — | — | — | — | — | 5 | — | — | — | 9 | 9 | 17 | 15 | — | 7 | — |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 6 | SSE 5 | SSE 5 | SSE 5 | SE 5 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | — | — | — | — | — | S 14 | SSW 13 |
| kJ | 57 | 72 | 78 | 80 | 69 | 106 | 137 | 120 | 118 | 100 | 88 | 81 | — | — | — | — | — | 1065 | 1308 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 155 | 155 | 7 | 7 | 7 | 7 | 7 | 493 | 7 | 7 | 7 | 7 | 2 | 2 | 2 | 7 | 7 | 11 | 11 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||
Best forecast wave conditions in Indonesia | |||||||||||||||||||
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