Surf Forecasts:
How big are the waves at Boat Basin Lefts today (11 Aug):
- Morning surf: Morning surf (11 Aug, local time) - 6.5ft (2.0m), 11s period with W swell.
- Afternoon surf: Afternoon surf (11 Aug, local time) - 6.5ft (2.0m), 11s period with W swell.
- Evening surf: Evening surf (11 Aug, local time) - 6ft (1.8m), 9s period with W swell.
The current surf forecast for Boat Basin Lefts at 4PM is: 2.0m 11s primary swell from a West direction and 0.3m 7s secondary swell from a North-northwest direction (forecast issued at 09:00am August 11). An open ocean swell of 0.4m 11s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Aug) | 6.5ft (2.0m) | 11s |
| Afternoon (11 Aug) | 6.5ft (2.0m) | 11s |
| Evening (11 Aug) | 6ft (1.8m) | 9s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Tue morning. Warm (max 29°C on Wed morning, min 28°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||||||||
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) | NW 12 | W 11 | W 11 | W 11 | W 9 | W 9 | W 9 | W 11 | WNW 11 | WNW 10 | W 8 | W 9 | W 10 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 11 | WNW 11 | WNW 10 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 514 | 988 | 932 | 949 | 529 | 506 | 494 | 907 | 214 | 206 | 597 | 732 | 928 | 1267 | 1347 | 1347 | 1322 | 1167 | 1031 | 1100 | 997 | 884 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 4:39AM0.91m | 8:03PM0.90m | 5:47AM0.92m | 8:36PM0.91m | 6:51AM0.92m | 9:07PM0.92m | ||||||||||||||||
Low Tide | 12:29PM0.00m | 00:55AM0.68m | 1:19PM0.01m | 1:47AM0.62m | 2:05PM0.06m | |||||||||||||||||
 |  | | |  | |  | |  | | | |  | | | | | | | | | | |
 | 6:07 | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:44 | — | — |
mm | — | 1 | 2 | 2 | 2 | 1 | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 29 | 29 | 28 | 28 |
Feels °C | 30 | 28 | 28 | 29 | 29 | 30 | 29 | 29 | 29 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 31 | 30 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | NW 12 | SE 11 | NNW 7 | SE 11 | NW 12 | WNW 12 | NW 12 | SE 10 | WNW 11 | WNW 10 | SE 10 | SE 10 | SE 10 | SE 10 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | WNW 11 | WNW 11 | WNW 10 |
| kJ | 514 | 19 | 15 | 30 | 205 | 174 | 140 | 37 | 214 | 206 | 35 | 35 | 35 | 36 | 1347 | 1347 | 1322 | 1167 | 1031 | 1100 | 997 | 884 |
Swell 2 Height (m) Direction Period (s) | SE 11 | NE 10 | SE 11 | NNW 7 | SE 11 | SE 11 | SE 10 | NNE 11 | SE 10 | SE 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 | 31 | 16 | 30 | 9 | 41 | 40 | 38 | 22 | 36 | 36 | 19 | 18 | 17 | 16 | 37 | 37 | 37 | 52 | 51 | 52 | 54 | 56 |
Swell 3 Height (m) Direction Period (s) | NE 10 | E 11 | NE 10 | NNE 10 | ENE 10 | NNE 10 | NNE 10 | E 10 | NNE 10 | NNE 10 | E 10 | E 9 | E 9 | ENE 9 | NNE 9 | ENE 9 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 |
| kJ | 16 | 9 | 15 | 10 | 10 | 9 | 19 | 7 | 22 | 20 | 7 | 7 | 2 | 9 | 8 | 8 | 11 | 11 | 11 | 11 | 11 | 11 |
Wind waves Height (m) Direction Period (s) | WSW 8 | W 11 | W 11 | W 11 | W 9 | W 9 | W 9 | W 11 | WSW 8 | WSW 8 | W 8 | W 9 | W 10 | WNW 11 | — | — | — | — | — | — | — | — |
| kJ | 290 | 988 | 932 | 949 | 529 | 506 | 494 | 907 | 416 | 461 | 597 | 732 | 928 | 1267 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 16 | 1836 | 1905 | 1905 | 1866 | 1836 | 1836 | 1836 | 1836 | 1836 | 1864 | 16 | 1908 | 1290 | 1836 | 1290 | 1836 | 1836 | 1905 | 1908 | 1885 | 1858 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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