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 (1.9m), 10s period with W swell.
- Evening surf: Evening surf (12 Aug, local time) - 6.5ft (2.0m), 10s period with W swell.
The current surf forecast for Boat Basin Lefts at 2AM is: 1.7m 10s primary swell from a West direction and 0.7m 12s secondary swell from a Northwest direction (forecast issued at 09:00pm August 11). 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 (1.9m) | 10s |
| Evening (12 Aug) | 6.5ft (2.0m) | 10s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Tue night. Warm (max 29°C on Wed morning, min 27°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Tue 11 | Wednesday 12 | Thursday 13 | ||||||||||||||||
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 7 | W 7 | W 9 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 |
Wave Graph  | ||||||||||||||||||
 kJ | 240 | 275 | 408 | 741 | 714 | 661 | 623 | 680 | 682 | 802 | 1194 | 1132 | 1071 | 1080 | 1142 | 1163 | 1027 | 875 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 8:03PM0.90m | 5:47AM0.92m | 8:36PM0.91m | 6:51AM0.92m | 9:07PM0.92m | |||||||||||||
Low Tide | 00:55AM0.68m | 1:19PM0.01m | 1:47AM0.62m | 2:05PM0.06m | ||||||||||||||
 | |  | |  |  |  | | |  | | | | | | | | | |
 | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:44 | — | — |
mm | 3 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 28 | 28 | 27 | 28 | 28 | 28 | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
Feels °C | 30 | 30 | 28 | 29 | 30 | 29 | 30 | 30 | 31 | 31 | 31 | 30 | 30 | 31 | 31 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | NW 12 | WNW 12 | NW 12 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 |
| kJ | 202 | 174 | 140 | 37 | 36 | 36 | 35 | 35 | 35 | 36 | 1194 | 1132 | 1071 | 1080 | 1142 | 1163 | 1027 | 875 |
Swell 2 Height (m) Direction Period (s) | WSW 9 | SE 11 | SE 10 | NNE 11 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 9 | NNE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 11 |
| kJ | 16 | 40 | 38 | 22 | 21 | 33 | 32 | 18 | 17 | 16 | 37 | 37 | 52 | 51 | 51 | 52 | 54 | 56 |
Swell 3 Height (m) Direction Period (s) | SE 11 | WSW 9 | NNE 10 | E 10 | E 10 | E 10 | E 9 | E 10 | E 9 | NE 12 | NNE 9 | ENE 9 | ENE 9 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 |
| kJ | 41 | 16 | 18 | 7 | 7 | 7 | 7 | 7 | 7 | 5 | 8 | 8 | 8 | 11 | 11 | 11 | 11 | 11 |
Wind waves Height (m) Direction Period (s) | W 7 | W 7 | W 9 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | — | — | — | — | — | — | — | — |
| kJ | 240 | 275 | 408 | 741 | 714 | 661 | 623 | 680 | 682 | 802 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 16 | 1836 | 1836 | 1836 | 16 | 1836 | 1905 | 2068 | 2064 | 1866 | 1837 | 1836 | 1836 | 1836 | 1864 | 229 | 229 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
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