Surf Forecasts:
How big are the waves at 4 Bobs today (21 Jul):
- Morning surf: Morning surf (21 Jul, local time) - 5.5ft (1.7m), 14s period with SSW swell.
- Afternoon surf: Afternoon surf (21 Jul, local time) - 5ft (1.5m), 14s period with SSW swell.
- Evening surf: Evening surf (21 Jul, local time) - 4.5ft (1.4m), 14s period with SSW swell.
The current surf forecast for 4 Bobs at 2AM is: 1.8m 15s primary swell from a South-southwest direction and 1.0m 7s secondary swell from a South-southeast direction (forecast issued at 06:00pm July 20). The wind direction is predicted to be cross-shore.
| Time (WIB) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jul) | 5.5ft (1.7m) | 14s |
| Afternoon (21 Jul) | 5ft (1.5m) | 14s |
| Evening (21 Jul) | 4.5ft (1.4m) | 14s |
Table - waves today at 4 Bobs. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 57mm), heaviest during Mon night. Warm (max 28°C on Mon afternoon, min 26°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | |||||||||||||||||
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) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 1675 | 1849 | 1803 | 1592 | 1396 | 1204 | 1061 | 1047 | 917 | 862 | 724 | 604 | 586 | 468 | 461 | 384 | 317 | 257 | 245 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross | cross | cross | 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 | 11:10PM0.99m | 11:01AM0.83m | 00:02AM0.96m | 11:49AM0.70m | |||||||||||||||
Low Tide | 4:18PM0.13m | 4:50AM0.33m | 4:51PM0.18m | 5:47AM0.39m | 5:28PM0.23m | ||||||||||||||
 |  | | | | | |  | |  | | | | | | | | | | |
 | — | — | — | — | 6:28 | — | — | — | — | — | — | — | 6:28 | — | — | — | — | — | — |
 | 6:29 | — | — | — | — | — | — | — | 6:29 | — | — | — | — | — | — | — | 6:29 | — | — |
mm | 1 | 4 | 2 | 5 | 5 | 5 | 2 | — | — | — | 3 | 3 | 5 | 5 | 3 | 3 | 2 | 2 | 1 |
Temp °C | 28 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 |
Feels °C | 31 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 |
| kJ | 1675 | 1849 | 1803 | 1592 | 1396 | 1204 | 1061 | 1047 | 917 | 862 | 724 | 604 | 586 | 468 | 461 | 384 | 317 | 257 | 245 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | SSE 7 | WNW 7 | WNW 7 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SSW 18 | SSW 18 | WNW 9 | WNW 8 | SSW 16 | SSW 16 | SSW 16 | SW 17 |
| kJ | 96 | 99 | 105 | 102 | 5 | 5 | 16 | 14 | 14 | 13 | 6 | 62 | 62 | 15 | 14 | 53 | 87 | 103 | 76 |
Swell 3 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 7 | W 10 | WNW 9 | W 7 | W 7 | SSW 20 | SSW 20 | W 10 | WNW 10 | WNW 10 | SSW 18 | SW 19 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 6 | 6 | 6 | 5 | 7 | 8 | 1 | 1 | 37 | 37 | 8 | 20 | 19 | 62 | 15 | 13 | 12 | 19 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 7 | SSE 7 | SSE 5 | SSE 5 | SSE 5 | SSE 6 | SSE 6 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SSE 7 | SSE 8 | SSE 8 | SSE 8 |
| kJ | — | — | — | — | 88 | 105 | 56 | 64 | 66 | 74 | 80 | 91 | 110 | 134 | 149 | 158 | 191 | 207 | 228 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 7 | 7 | 7 | 2 | 2 | 2 | 2 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
Best forecast wave conditions in Mentawi Islands | |||||||||||||||||||
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