Surf Forecasts:
How big are the waves at Boat Basin Lefts today (10 Aug):
- Afternoon surf: Afternoon surf (10 Aug, local time) - 7ft (2.1m), 10s period with W swell.
- Evening surf: Evening surf (10 Aug, local time) - 6.5ft (2.0m), 10s period with W swell.
The current surf forecast for Boat Basin Lefts at 12AM is: 2.0m 10s primary swell from a West direction and 0.5m 11s secondary swell from a Northeast direction (forecast issued at 03:00pm August 09). An open ocean swell of 0.4m 9s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Aug) | - | - |
| Afternoon (10 Aug) | 7ft (2.1m) | 10s |
| Evening (10 Aug) | 6.5ft (2.0m) | 10s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 19mm), heaviest on Mon night. Warm (max 29°C on Sun afternoon, min 27°C on Mon night). Mainly fresh winds. | ||||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | ||||||||||||||||||
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) | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | W 11 | W 11 | W 11 | W 8 | W 8 | W 8 | W 11 | W 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 900 | 902 | 902 | 802 | 784 | 687 | 660 | 669 | 700 | 695 | 627 | 575 | 1179 | 1351 | 1442 | 603 | 551 | 579 | 1168 | 555 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on |
High Tide | 6:40PM0.83m | 3:28AM0.89m | 7:26PM0.87m | 4:39AM0.91m | 8:03PM0.90m | |||||||||||||||
Low Tide | 10:34AM0.07m | 10:45PM0.74m | 11:34AM0.03m | 11:57PM0.72m | 12:29PM0.00m | |||||||||||||||
 | |  | | |  | |  |  | | | | | | | | | | |  | |
 | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — |
mm | — | — | — | — | — | 1 | — | 1 | — | — | — | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 1 | — |
Temp °C | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 29 | 30 | 29 | 29 | 30 | 30 | 29 | 29 | 29 | 30 | 29 | 29 | 28 | 27 | 28 | 28 | 28 | 27 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | W 10 | NE 12 | NE 12 | ENE 12 | NE 11 | NW 13 | NW 12 | NW 12 | NW 12 | NW 11 | NW 13 | NW 13 | SE 10 | SE 11 | SE 11 | WNW 11 | WNW 11 | WNW 11 | SE 11 | WNW 12 |
| kJ | 900 | 142 | 112 | 91 | 63 | 136 | 178 | 236 | 273 | 298 | 376 | 424 | 15 | 19 | 19 | 386 | 346 | 261 | 30 | 171 |
Swell 2 Height (m) Direction Period (s) | NE 12 | SE 9 | SE 9 | NW 10 | SE 9 | NE 11 | NE 11 | NE 11 | NE 11 | NE 11 | NE 11 | NE 11 | NE 10 | NE 10 | NE 10 | SE 11 | SE 11 | NNW 7 | ENE 12 | SE 11 |
| kJ | 144 | 23 | 23 | 26 | 22 | 60 | 59 | 58 | 42 | 30 | 18 | 29 | 17 | 16 | 16 | 19 | 19 | 16 | 14 | 40 |
Swell 3 Height (m) Direction Period (s) | SE 10 | NW 11 | NW 10 | SE 9 | SE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | E 11 | E 11 | E 11 | NNE 10 | NNE 10 | SE 11 | NNE 10 | NNE 10 |
| kJ | 23 | 18 | 17 | 22 | 24 | 21 | 21 | 13 | 13 | 21 | 23 | 14 | 9 | 9 | 9 | 10 | 10 | 18 | 9 | 9 |
Wind waves Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | W 11 | W 11 | W 11 | W 8 | W 8 | W 8 | W 11 | W 8 |
| kJ | 603 | 902 | 902 | 802 | 784 | 687 | 660 | 669 | 700 | 695 | 627 | 575 | 1179 | 1351 | 1442 | 603 | 551 | 579 | 1168 | 555 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1905 | 1864 | 1905 | 1836 | 1836 | 1836 | 1836 | 1836 | 1905 | 1905 | 1905 | 1836 | 1290 | 1290 | 1290 | 1836 | 1905 | 1905 | 1905 | 16 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
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