Surf Forecasts:
How big are the waves at Boat Basin Lefts today (30 Aug):
- Morning surf: Morning surf (30 Aug, local time) - 3ft (0.9m), 8s period with W swell.
- Afternoon surf: Afternoon surf (30 Aug, local time) - 3.5ft (1.0m), 8s period with W swell.
- Evening surf: Evening surf (30 Aug, local time) - 2.5ft (0.7m), 8s period with W swell.
The current surf forecast for Boat Basin Lefts at 5PM is: 1.0m 8s primary swell from a West direction and 0.4m 10s secondary swell from a East-northeast direction, 0.4m 9s secondary swell from a Northwest direction (forecast issued at 09:00am August 30). The wind direction is predicted to be onshore.
| Time (ChST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Aug) | 3ft (0.9m) | 8s |
| Afternoon (30 Aug) | 3.5ft (1.0m) | 8s |
| Evening (30 Aug) | 2.5ft (0.7m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 51mm), heaviest during Sun afternoon. Warm (max 29°C on Sun morning, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||||||||
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 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 | WNW 9 | WNW 9 | WNW 10 | WNW 9 | W 9 | W 9 | W 9 | W 9 | W 8 | NE 10 | W 8 | W 8 | W 9 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 92 | 92 | 94 | 119 | 117 | 57 | 135 | 135 | 106 | 101 | 149 | 179 | 232 | 281 | 269 | 258 | 299 | 383 | 49 | 545 | 691 | 775 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | on | on | on | on | cross-on | cross-on | on | on |
High Tide | 8:35AM0.85m | 9:20PM0.89m | 9:29AM0.83m | 9:42PM0.89m | 10:27AM0.81m | |||||||||||||||||
Low Tide | 2:58PM0.30m | 3:34AM0.38m | 3:33PM0.38m | 4:15AM0.31m | 4:10PM0.46m | |||||||||||||||||
 | |  |  |  | | | | | |  | | | | |  |  | | | | | | |
 | 6:09 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:31 | — | — |
mm | — | — | — | 1 | 6 | 5 | 6 | 5 | 3 | 1 | — | 2 | 5 | 2 | 4 | 1 | 1 | — | — | 2 | 4 | 2 |
Temp °C | 28 | 28 | 29 | 28 | 27 | 27 | 27 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 |
Feels °C | 31 | 30 | 30 | 29 | 28 | 28 | 29 | 27 | 28 | 30 | 29 | 30 | 29 | 30 | 31 | 30 | 29 | 30 | 30 | 29 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | W 8 | WNW 8 | ENE 11 | ENE 10 | ENE 11 | W 8 | W 8 | NE 10 | W 7 | WNW 9 | WNW 9 | WNW 10 | WSW 6 | W 9 | W 9 | W 9 | NE 11 | NE 11 | NE 10 | NE 10 | NE 10 | NE 10 |
| kJ | 92 | 27 | 44 | 43 | 44 | 57 | 135 | 25 | 106 | 101 | 149 | 179 | 26 | 281 | 269 | 258 | 57 | 56 | 49 | 48 | 48 | 48 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | ENE 11 | WNW 8 | WNW 8 | NW 10 | ENE 10 | WNW 9 | NW 10 | WNW 8 | WSW 7 | WSW 7 | WSW 8 | ENE 11 | ENE 11 | ENE 10 | ENE 11 | SE 9 | SE 9 | SE 9 | E 11 | E 11 | E 11 |
| kJ | 27 | 44 | 27 | 26 | 25 | 42 | 32 | 26 | 39 | 59 | 43 | 37 | 44 | 44 | 42 | 45 | 13 | 13 | 13 | 9 | 21 | 9 |
Swell 3 Height (m) Direction Period (s) | NE 11 | SE 9 | SE 9 | SE 9 | SE 9 | NW 10 | ENE 10 | SE 10 | NE 10 | NE 10 | NE 10 | NE 10 | SE 9 | SE 9 | SE 9 | SE 9 | E 11 | E 11 | E 11 | ESE 9 | SE 9 | SE 9 |
| kJ | 56 | 14 | 14 | 14 | 14 | 25 | 40 | 23 | 25 | 27 | 28 | 28 | 23 | 23 | 14 | 14 | 9 | 9 | 9 | 8 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | NW 8 | W 8 | W 8 | W 8 | W 8 | WNW 5 | — | W 8 | — | — | — | — | WNW 9 | — | — | — | W 9 | W 8 | WSW 8 | W 8 | W 8 | W 9 |
| kJ | 55 | 92 | 94 | 119 | 117 | 34 | — | 135 | — | — | — | — | 232 | — | — | — | 299 | 383 | 437 | 545 | 691 | 775 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 1836 | 11 | 11 | 11 | 17 | 1858 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||||||
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