Surf Forecasts:
How big are the waves at Boat Basin Lefts today (15 Aug):
- Afternoon surf: Afternoon surf (15 Aug, local time) - 4.5ft (1.4m), 8s period with W swell.
- Evening surf: Evening surf (15 Aug, local time) - 5ft (1.5m), 8s period with W swell.
The current surf forecast for Boat Basin Lefts at 6PM is: 1.4m 8s primary swell from a West direction and 0.3m 10s secondary swell from a Northeast direction (forecast issued at 03:00pm August 15). An open ocean swell of 0.4m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Aug) | - | - |
| Afternoon (15 Aug) | 4.5ft (1.4m) | 8s |
| Evening (15 Aug) | 5ft (1.5m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 37mm), heaviest during Sun afternoon. Warm (max 29°C on Sat afternoon, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | ||||||||||||||||||
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) | WNW 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 284 | 270 | 302 | 302 | 291 | 284 | 323 | 321 | 323 | 313 | 313 | 284 | 329 | 373 | 373 | 331 | 331 | 297 | 252 | 253 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 10:02PM0.92m | 9:49AM0.84m | 10:27PM0.91m | 10:51AM0.79m | ||||||||||||||||
Low Tide | 3:27PM0.22m | 4:08AM0.42m | 4:04PM0.33m | 4:54AM0.36m | 4:38PM0.43m | |||||||||||||||
 | |  | | |  | |  | |  | | | | | | | | | |  | |
 | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | 6:43 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:42 | — | — |
mm | 3 | 2 | 1 | 1 | 1 | — | 2 | — | 1 | 7 | 2 | — | 7 | 3 | 6 | — | — | — | 1 | — |
Temp °C | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 28 | 28 | 28 | 28 |
Feels °C | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 29 | 31 | 28 | 30 | 29 | 29 | 26 | 28 | 29 | 30 | 30 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | W 8 | NNE 10 | NNE 10 | NE 10 | NE 10 | W 8 | W 8 | W 8 |
| kJ | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 15 | 15 | 15 | 15 | 15 | 329 | 22 | 20 | 24 | 23 | 297 | 252 | 253 |
Swell 2 Height (m) Direction Period (s) | N 10 | NE 11 | NE 10 | NE 10 | NE 10 | NNE 11 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | NNE 11 | NNE 11 | SE 10 | E 8 | E 8 | E 8 | NE 9 | NE 9 | NE 9 |
| kJ | 17 | 18 | 17 | 16 | 16 | 12 | 8 | 8 | 8 | 16 | 15 | 13 | 24 | 14 | 12 | 13 | 13 | 23 | 22 | 21 |
Swell 3 Height (m) Direction Period (s) | NE 11 | N 9 | N 9 | N 9 | N 9 | ENE 9 | NNE 11 | NE 10 | NE 10 | NNE 12 | NNE 12 | ENE 9 | SE 10 | E 8 | SE 10 | SE 10 | SE 9 | E 9 | E 9 | E 9 |
| kJ | 19 | 7 | 6 | 6 | 6 | 8 | 12 | 4 | 4 | 14 | 13 | 15 | 15 | 13 | 14 | 14 | 14 | 13 | 13 | 13 |
Wind waves Height (m) Direction Period (s) | WNW 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | — | W 8 | W 8 | W 8 | W 8 | — | — | — |
| kJ | 284 | 270 | 302 | 302 | 291 | 284 | 323 | 321 | 323 | 313 | 313 | 284 | — | 373 | 373 | 331 | 331 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 16 | 16 | 16 | 16 | 16 | 16 | 229 | 229 | 0 | 1290 | 1290 | 2069 | 229 | 229 | 229 | 229 | 231 | 229 | 229 | 229 |
Best forecast wave conditions in Guam | ||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||
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