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 (0.8m), 8s period with W swell.
The current surf forecast for Boat Basin Lefts at 5AM is: 0.7m 8s primary swell from a Northwest direction and 0.5m 11s secondary swell from a Northeast direction (forecast issued at 09:00pm August 29). An open ocean swell of 0.8m 8s is not directed at the surf break. 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 (0.8m) | 8s |
Table - waves today at Boat Basin Lefts. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 85mm), heaviest during Tue afternoon. Warm (max 28°C on Sat night, min 26°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | ||||||||||||||||
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 | ENE 11 | NE 11 | NW 8 | NW 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 | NW 8 | WNW 9 | WNW 10 | WNW 10 | W 9 | W 9 |
Wave Graph  | ||||||||||||||||||
 kJ | 92 | 78 | 57 | 67 | 82 | 92 | 117 | 120 | 116 | 74 | 142 | 134 | 100 | 161 | 196 | 192 | 287 | 276 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on |
High Tide | 9:00PM0.88m | 8:35AM0.85m | 9:20PM0.89m | 9:29AM0.83m | 9:42PM0.89m | |||||||||||||
Low Tide | 2:55AM0.45m | 2:58PM0.30m | 3:34AM0.38m | 3:33PM0.38m | ||||||||||||||
 | | | |  | |  | |  |  | | |  | | | | | | |
 | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:32 | — | — |
mm | — | — | — | — | — | — | 1 | 1 | 3 | 7 | 6 | 6 | 1 | 1 | 2 | 3 | 6 | 7 |
Temp °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 27 | 27 | 27 | 27 | 27 |
Feels °C | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 29 | 29 | 28 | 29 | 29 | 30 | 29 | 28 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | W 7 | WSW 7 | WSW 7 | WSW 8 | WSW 8 | WNW 8 | ENE 11 | W 8 | W 8 | W 8 | WNW 9 | NE 10 | WSW 7 | WSW 8 | WNW 10 | WNW 10 | W 9 | W 9 |
| kJ | 92 | 59 | 54 | 75 | 66 | 39 | 44 | 120 | 116 | 74 | 46 | 25 | 71 | 54 | 196 | 192 | 287 | 276 |
Swell 2 Height (m) Direction Period (s) | ENE 11 | ENE 11 | NE 11 | NE 11 | NE 11 | ENE 11 | WNW 8 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | WNW 9 | NE 10 | NE 10 | WSW 8 | WSW 8 | NE 11 | ENE 11 |
| kJ | 79 | 78 | 57 | 57 | 56 | 44 | 27 | 43 | 43 | 42 | 40 | 26 | 26 | 27 | 55 | 51 | 29 | 44 |
Swell 3 Height (m) Direction Period (s) | NW 9 | WSW 8 | NW 9 | SE 10 | SE 9 | SE 9 | SE 9 | WNW 8 | NW 10 | NW 10 | SE 9 | NW 10 | NW 10 | SE 10 | NE 10 | NE 10 | SE 9 | SE 9 |
| kJ | 21 | 14 | 21 | 14 | 14 | 14 | 14 | 26 | 25 | 25 | 14 | 26 | 26 | 23 | 28 | 28 | 22 | 23 |
Wind waves Height (m) Direction Period (s) | — | NW 8 | NW 8 | NW 8 | NW 8 | W 8 | W 8 | NW 4 | NNW 4 | NW 4 | W 8 | W 7 | NW 8 | WNW 9 | NW 8 | — | — | — |
| kJ | — | 57 | 45 | 67 | 82 | 92 | 117 | 14 | 5 | 19 | 142 | 134 | 100 | 161 | 105 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 11 | 1836 | 11 | 1836 | 1836 | 1836 | 1885 | 11 | 11 | 1836 | 11 | 16 | 11 | 11 | 11 | 11 | 11 | 11 |
Best forecast wave conditions in Guam | ||||||||||||||||||
Best forecast wave conditions in Guam | ||||||||||||||||||
Header Global | ||||||||||||||||||
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