Surf Forecasts:
How big are the waves at Boat Basin Lefts today (12 Aug):
- Morning surf: Morning surf (12 Aug, local time) - 6ft (1.8m), 10s period with W swell.
- Afternoon surf: Afternoon surf (12 Aug, local time) - 6ft (1.8m), 10s period with W swell.
- Evening surf: Evening surf (12 Aug, local time) - 6ft (1.9m), 10s period with W swell.
The current surf forecast for Boat Basin Lefts at 5PM is: 1.8m 10s primary swell from a West direction and 0.3m 10s secondary swell from a North-northeast direction (forecast issued at 09:00am August 12). An open ocean swell of 0.4m 10s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Aug) | 6ft (1.8m) | 10s |
| Afternoon (12 Aug) | 6ft (1.8m) | 10s |
| Evening (12 Aug) | 6ft (1.9m) | 10s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 29°C on Wed morning, min 27°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||||||||
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) | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 10 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 700 | 661 | 635 | 612 | 618 | 725 | 1053 | 1249 | 1163 | 997 | 901 | 884 | 858 | 810 | 740 | 671 | 631 | 905 | 813 | 769 | 726 | 616 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 5:47AM0.92m | 8:36PM0.91m | 6:51AM0.92m | 9:07PM0.92m | 7:51AM0.91m | 9:35PM0.92m | ||||||||||||||||
Low Tide | 1:19PM0.01m | 1:47AM0.62m | 2:05PM0.06m | 2:35AM0.56m | 2:47PM0.13m | |||||||||||||||||
 | |  | |  |  | | | | | | | | | | | | | | | | | |
 | 6:07 | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:43 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 28 |
Feels °C | 31 | 30 | 30 | 30 | 30 | 31 | 30 | 30 | 31 | 29 | 30 | 31 | 31 | 31 | 30 | 29 | 29 | 29 | 30 | 31 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | W 10 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 10 |
| kJ | 36 | 35 | 35 | 35 | 35 | 725 | 1053 | 1249 | 1163 | 997 | 901 | 884 | 858 | 810 | 740 | 671 | 631 | 905 | 813 | 769 | 726 | 616 |
Swell 2 Height (m) Direction Period (s) | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 |
| kJ | 21 | 33 | 32 | 18 | 17 | 36 | 37 | 37 | 52 | 51 | 51 | 52 | 54 | 56 | 56 | 56 | 56 | 55 | 55 | 54 | 54 | 39 |
Swell 3 Height (m) Direction Period (s) | E 10 | E 10 | E 9 | E 10 | E 9 | NNE 9 | NNE 9 | ENE 9 | ENE 9 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | E 11 | ENE 11 | E 11 | N 11 | N 11 | N 12 | N 12 | N 11 | N 11 |
| kJ | 7 | 7 | 7 | 7 | 7 | 16 | 8 | 8 | 8 | 11 | 11 | 11 | 11 | 9 | 11 | 9 | 9 | 9 | 25 | 25 | 22 | 21 |
Wind waves Height (m) Direction Period (s) | W 10 | W 10 | W 10 | W 10 | W 10 | — | — | — | — | — | — | — | — | — | — | — | — | W 9 | — | — | — | — |
| kJ | 700 | 661 | 635 | 612 | 618 | — | — | — | — | — | — | — | — | — | — | — | — | 449 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 1836 | 1836 | 1905 | 2064 | 1958 | 1836 | 1836 | 1836 | 1836 | 1836 | 1864 | 1908 | 229 | 11 | 2064 | 16 | 16 | 1898 | 16 | 16 | 11 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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